Evolution Bed LI156Ex Technial User Manual

Technical Manual

Evolution Bed LI156Ex

from

Hill-Rom

®

QD1551A

Contents

A HILLENBRAND INDUSTRY

Rev. 001

IMPORTANT: Refer to the last page of this manual to
obtain the address of your National Hill-Rom
representative:

Manufacturer:

HILL-ROM,

Z.I. du Talhouët, B.P. 14,

56330 PLUVIGNER. FRANCE.

© 2000

Any reproduction of these documents is prohibited.

November 2000

Hill-Rom and all Hill-Rom products mentioned in this book are
trademarks of Hill-Rom.

The only intentional product warranty by Hill-Rom is the expressed
and written warranty that accompanies the invoice addressed to
the original purchaser. Hill-Rom gives no other warranty,
expressed or implicit, and in particular, give no guarantee of the
merchantability or propriety regardless of the purpose.

Note: While every care has been taken to ensure that the
information contained in this manual was correct at the
time of going to press, Hill-Rom reserves the right to change
any details and specifications without prior notice in line
with a policy of continual product development.

II Evolution Bed LI156Ex from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Contents

Contents

Revision status ................................................... VII

Section 1: Introduction

Purpose of this Manual ................................... 1- 2

Who should use this Manual.......................... 1- 2

Organisation of this Manual .......................... 1- 2

Section 1: Introduction........................... 1- 2

Section 2: Troubleshooting Procedures 1- 2

Section 3: Theory of Operation............. 1- 2

Section 4: Removal, Replacement, and

Adjustment Procedures.......................... 1- 2

Section 5: Parts List .................................. 1- 2

Section 6: General Procedures ............. 1- 2

Section 7: Accessories ........................... 1- 2

Typographical Conventions used in this

Manual .................................................... 1- 3

Glossary of Abbreviations.......................... 1- 3

Operating Precautions .............................. 1- 4

Positions of the bed .................................... 1- 4

General Description ....................................... 1- 4

Specifications .............................................. 1- 4

Functional Description ............................... 1- 5

Electrical Description ................................. 1- 7

Regulatory Requirements .......................... 1- 8

General operation of the Evolution LI156Ex

Bed ........................................................... 1- 9

Bed Positions ................................................ 1- 9

Disenablement of the bed functions ....... 1- 9

Steering ........................................................ 1- 9

Operation of the side-rails ......................... 1- 9

Braking ....................................................... 1- 10

Trend./Reverse Trend. (optional) ............. 1- 10

Head and foot boards............................. 1- 10

Footboard Linen Holder (option)............ 1- 10

Hard Panels in Head, Upper Leg and Foot

Sections ......................................... 1- 10

Bedside Table Rails (optional) ................. 1- 10

Model identification ..................................... 1- 11

Safety Indications ..................................... 1- 12

Identification and warning labels .......... 1- 13

Section 2: Troubleshooting
Procedures

A) Detailed Troubleshooting Method:

list below .................................................. 2- 2

Getting Started ....................................... 2- 2

Initial Actions ........................................... 2- 2

Function checks ..................................... 2- 3

Final Actions ............................................ 2- 4

Appendices: ........................................... 2- 4

2.1 No function works................................... 2- 5

2.2 Bed Raise function not working ............ 2- 6

2.3 Bed Lower function not working ........... 2- 8

2.4 Head Section Raise function not

working .................................................... 2- 9

2.5 Head Section Lower function not

working .................................................. 2- 10

2.6 Knee Section Raise function not

working .................................................. 2- 11

2.7 Knee Section Lower function not

working .................................................. 2- 12

2.8 The Autocontour does not work ......... 2- 13

2.9 Abnormal working of the bed when

running on the battery (option). ........ 2- 14

2.10 Reverse Trendelenburg does not function

correctly................................................. 2- 14

2.11 Trendelenburg does not function

correctly................................................. 2- 15

2.12 CPR release does not function

correctly................................................. 2- 16

2.13 Leg Section mechanism does not function

correctly................................................. 2- 16

2.14 Troubleshooting for side-rails and

hand pendant control unit ................. 2- 17

2.15 Troubleshooting for Variable Height

pedal ..................................................... 2- 19

B) Simplified general troubleshooting

method for the LI156Ex ........................ 2- 20

Evolution Bed LI156Ex from Hill-Rom III

Technical Manual

Contents

A HILLENBRAND INDUSTRY

Rev. 001

Section 3: Theory of Operation

General cabling and positioning of

components - LI156Ex .............................. 3- 2

Schematic diagram for LI156Ex .................... 3- 3

3.1 Technical description ............................. 3- 4

3.1.1 Mechanics ........................................ 3- 4

3.1.2 Electrics: Theory of Operation ........ 3- 4

Section 4: Removal,
Replacement and Adjustment
Procedures

4.1) Side-rail touchpad replacement ........ 4- 3

Removal....................................................... 4- 3

Installation ................................................... 4- 4

4.2) Side-rail cable replacement ................ 4- 4

Removal....................................................... 4- 4

Installation ................................................... 4- 5

4.3) Intermediate side-rail cable

replacement .......................................... 4- 6

Removal....................................................... 4- 6

Installation ................................................... 4- 6

4.4) Power supply cable replacement ...... 4- 7

Removal....................................................... 4- 7

Installation ................................................... 4- 7

4.5) Power unit replacement ....................... 4- 8

Removal: specific procedure when bed is

stuck in low position. ............................. 4- 8

Removal: general procedure ................... 4- 9

Installation: general procedure ................ 4- 9

4.6) Lock-out switch replacement ............ 4- 10

Removal..................................................... 4- 10

Installation ................................................. 4- 10

4.7) Battery replacement .......................... 4- 10

Removal..................................................... 4- 10

Installation ................................................. 4- 11

4.8) Variable Height motor replacement 4- 11

Removal..................................................... 4- 11

Removal: specific procedure when bed is

stuck in low position and the covers
cannot be unscrewed and removed4- 13

Installation: for all beds ............................ 4- 13

4.9) Head Section motor replacement ..... 4- 15

Removal..................................................... 4- 15

Installation ................................................. 4- 16

4.10) Knee Section motor replacement .... 4- 17

Removal..................................................... 4- 17

Installation ................................................. 4- 18

4.11) Trendelenburg End of Travel and Reverse
Trendelenburg assist switch assembly

replacement ........................................ 4- 18

Removal..................................................... 4- 18

Installation ................................................. 4- 19

4.12) Trendelenburg/Reverse Trendelenburg

cable replacement ............................ 4- 19

Removal..................................................... 4- 19

Installation ................................................. 4- 20

Adjustment ................................................ 4- 20

4.13) Trendelenburg/Reverse Trendelenburg

mechnism replacement ..................... 4- 21

Removal..................................................... 4- 21

Installation ................................................. 4- 23

4.14) Trendelenburg/Reverse Trendelenburg

assist gas spring replacement ........... 4- 24

Removal..................................................... 4- 24

Installation ................................................. 4- 25

4.15) Head Section assist gas spring

replacement ........................................ 4- 26

Removal..................................................... 4- 26

Installation ................................................. 4- 26

4.16) Head Section disable system

replacement ........................................ 4- 26

Removal..................................................... 4- 26

Installation ................................................. 4- 27

Adjustment ................................................ 4- 27

4.17) Castor, Steer/Brake castor

replacement ........................................ 4- 28

Removal..................................................... 4- 28

Installation ................................................. 4- 29

Adjustment of brakes: single and double

band castors. ....................................... 4- 29

Adjustment of brake and steer

castors................................................... 4- 30

4.18) Head and footboard replacement .. 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 31

IV Evolution Bed LI156Ex from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Contents

4.19) Footboard linen holder replacement 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 31

4.20) Headend side-rail replacement........ 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 32

4.21) Footend side-rail replacement .......... 4- 32

Removal..................................................... 4- 32

Installation: general procedure .............. 4- 32

4.22) Mechanical Leg Section cable

replacement ........................................ 4- 33

Removal..................................................... 4- 33

Installation ................................................. 4- 33

Adjustment ................................................ 4- 34

4.23) Mechanical Leg Section

replacement ........................................ 4- 34

Removal..................................................... 4- 34

Installation ................................................. 4- 35

Adjustment ................................................ 4- 35

4.24) Extension replacement....................... 4- 36

Removal..................................................... 4- 36

Installation ................................................. 4- 37

4.25) Variable Height pedal replacement 4- 37

Removal..................................................... 4- 37

Removal of Variable Height pedal electric

wiring ..................................................... 4- 38

Installation of pedal electric wiring ........ 4- 39

4.26) Bedside Cabinet support rails

replacement ........................................ 4- 40

Removal..................................................... 4- 40

Installation ................................................. 4- 40

5.9 Chassis Covers .................................. 5- 20

5.10 Lift arm ............................................... 5- 22

5.11 Lift arm: conduit ............................... 5- 24

5.12 Intermediate Section ....................... 5- 26

5.13 Head Section Articulation and Release

Lever................................................... 5- 28

5.14 Knee Section ..................................... 5- 30

5.15 Knee Section Motor and Bedframe

Junction Box...................................... 5- 32

5.16 Head Section Power and Assist ...... 5- 34

5.17 CPR - Head Section Release........... 5- 36

5.18 Leg Section Mechanism .................. 5- 38

5.19 Trendelenburg/Reverse Trendelenburg

lever ................................................... 5- 40

5.20 Ends of the Bed ................................ 5- 42

5. 21Fixed and Sliding Extensions ............ 5- 44

5.22 Side-rail Fastenings ........................... 5- 46

5.23 Headend Side-rails up to 28/02/01 5- 48

5.24 Headend Side-rails after 28/02/01 . 5- 50

5.25 Footend Side-rails up to 28/02/01... 5- 52

5.26 Footend Side-rails after 28/02/01 .... 5- 54

5.27 Hand Pendant Control Unit

Connection ....................................... 5- 56

5.28 Hard Surfaces ................................... 5- 58

5.29 Earthing ............................................. 5- 60

5.30 Head and Footboards ..................... 5- 62

5.31 Labels for Symmetrical Headboard

156Ex Bed .......................................... 5- 64

5.32 Labels for Horizontal Symmetrical

Headboard 156Ex Bed .................... 5- 66

Section 6: General Procedures

Cleaning and Care ........................................ 6- 2

Section 5: Parts List

Ordering Service Parts .................................... 5- 2

Exchange Policy ............................................. 5- 3

General Cleaning ...................................... 6- 2

Steam Cleaning.......................................... 6- 2

Hard to Clean Spots ................................... 6- 2

Disinfection .................................................. 6- 2

In-warranty exchanges .............................. 5- 3

Recommended Spare Parts .......................... 5- 3

5.1 Castors ................................................. 5- 4

5.2 Single Brake ......................................... 5- 6

5.3 Power supply ....................................... 5- 8

5.4 Variable Height Power ..................... 5- 10

5.5 Simple Variable Height: connector 5- 12

Lubrication Requirements .............................. 6- 2

Storing the Bed................................................ 6- 2

Preventive Maintenance ............................... 6- 2

Preventive Maintenance Schedule ......... 6- 3

Preventive Maintenance Checklist .......... 6- 5

Tools and Specific Requirements .................. 6- 6

5.6 Variable Height: Trendelenburg/Reverse

Trendelenburg mechanism ............. 5- 14

5.7 Variable Height Pedal ...................... 5- 16

5.8 End of Travel Switch Assembly ........ 5- 18

Evolution Bed LI156Ex from Hill-Rom V

Technical Manual

Contents

Section 7: Accessories

7.1 Summary list ............................................... 7- 2

7.2 Accessory details for the LI156Ex bed .... 7- 3

7.2.1 Adaptable I.V. hook on patient helper:

AC953A.............................................. 7- 3

7.2.2 Mattress for bedframe extension with

panel: AC992A ................................. 7- 3

7.2.3 Headboard tray: AD083A ............... 7- 3

7.2.4 Stainless steel 3-position, 1, 2 and 3 litre
bottle holder: AC932A, AC938A and

AC961A.............................................. 7- 3

7.2.5 Two-slot bottle holder: AC908A ...... 7- 3

7.2.6 3-litre pivoting bottle holder:

AC962A.............................................. 7- 3

7.2.7 Label holder: AC923A ...................... 7- 3

7.2.8 Monitor stand: AC967A ................... 7- 3

7.2.9 Syringe-driver holder: AC963A........ 7- 3

7.2.10 Drainage bag holder, triangular
section drainage bag holder and
raised drainage bag holder: AD016A,

AC991A and AC907A ...................... 7- 3

7.2.11 Chrome-plated patient helper:

AD080A .............................................. 7- 3

7.2.12 Adjustable chrome-plated patient

helper: AD081A ................................ 7- 3

7.2.13 Pivoting oxygen cylinder holder:

AC959A ............................................. 7- 3

7.2.14 I.V. poles: AD082A............................. 7- 3

7.2.15 Chrome-plated frame:

AC930A.............................................. 7- 4

7.2.16 Equipotential cable: AC968A ......... 7- 4

7.2.17 Kinétec frame: ST860A assembled
with: ST856A, AC930A, AC903A (SH

bed only) ........................................... 7- 4

7.2.18 AD090A assembly and cabling kit for
hand-held control unit:

AD091A .............................................. 7- 4

7.2.19 Variable Height pedal kit:

AD098A .............................................. 7- 6

A HILLENBRAND INDUSTRY

Rev. 001

VI Evolution Bed LI156Ex from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Revision status

margorPeltiTlaunaMecnerefeR

xE651iL deB

morf

moR-lliH

deB xE651iL morf moR-lliH

launaMecivreSlacinhceT

.onnoisiveRdetceffasegaPdegnahcetaD

eussilanigirO -0002/11/10

1noisiveRllA1002/40/10

Contents

000HCET/xE651IL/F/TNI

000_lbt_A2151

Evolution Bed LI156Ex from Hill-Rom VII

Technical Manual

Contents

Notes:

A HILLENBRAND INDUSTRY

Rev. 001

VIII Evolution Bed LI156Ex from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Section Contents

Introduction

1. Introduction

1

Purpose of this Manual ................................... 1- 2

Who should use this Manual.......................... 1- 2

Organisation of this Manual .......................... 1- 2

Section 1: Introduction........................... 1- 2

Section 2: Troubleshooting Procedures 1- 2

Section 3: Theory of Operation............. 1- 2

Section 4: Removal, Replacement, and

Adjustment Procedures .......................... 1- 2

Section 5: Parts List .................................. 1- 2

Section 6: General Procedures ............. 1- 2

Section 7: Accessories ........................... 1- 2

Typographical Conventions used in this

Manual ............................................................. 1- 3

Glossary of Abbreviations.......................... 1- 3

Operating Precautions .............................. 1- 4

Positions of the bed .................................... 1- 4

General Description ....................................... 1- 4

Specifications .............................................. 1- 4

Functional Description ............................... 1- 5

Electrical Description ................................. 1- 7

Regulatory Requirements .......................... 1- 8

General operation of the Evolution LI156Ex

Bed ................................................................... 1- 9

Bed Positions ................................................ 1- 9

Bed lock-out functions ............................... 1- 9

Steering ........................................................ 1- 9

Operation of the side-rails ......................... 1- 9

Braking ....................................................... 1- 10

Trend./Reverse Trend. (optional) ............. 1- 10

Headboards and Footboards ................. 1- 10

Footboard Linen Holder (option) ............ 1- 10

Hard Panels in Head, Upper Leg and Foot

Sections ...................................................... 1- 10

Bedside Cabinet Transport (optional) .... 1- 10

Model identification ..................................... 1- 11

Safety Indcations ...................................... 1- 12

Identification and warning labels .......... 1- 13

Evolution LI156Ex Bed from Hill-Rom 1- 1

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

Purpose of this Manual

This manual provides the information required for the
normal operation and maintenance of the Hill-Rom®
Evolution LI156Ex bed. It also includes a complete
parts list for ordering replacement components. The
parts list is located in Section 5.

WARNING

This manual describes the overall
functions of the Evolution LI156Ex
bed and their purpose, but is in no

way meant to replace the user
manual, whose purpose is to describe these
aspects in detail. For preceise information
relating to the use of the Evolution LI156Ex
bed, see the user manual.

Note: A specific technical manual is available for

previous versions of the Evolution bed: LI156A,
LI156N, LI156B, LI156C, LI156Dx.

Who should use this manual?

This manual is intended to be used by facility
authorised maintenance personnel only. Failure to
observe this restriction can result in serious damage
to equipment and/or safety risks to people.

Organisation of this manual

This manual contains seven sections.

Section 1: Introduction

You are currently reading Section 1. This section
defines the manual's purpose and who should use
the information in the manual. It also describes the
manual's organisation and explains the various
typographical conventions used throughout the
manual. Also included is an introduction to the
product, specifications, model identification, safety
tips and the Evolution LI156Ex bed caution and
warning labels.

Section 2: Troubleshooting Procedures

Section 2 contains the Evolution LI156Ex bed
troubleshooting procedures. It also includes a
troubleshooting introduction, initial actions, function
checks and repair analysis procedures.

Section 3: Theory of Operation

Section 3 contains the hardware and software theory
of operation of the Evolution bed LI156Ex. It also
includes the wiring diagrams and block diagrams of
the Evolution LI156Ex bed.

Section 4: Removal, Replacement and

Adjustment Procedures

Section 4 includes removal, replacement and
adjustment procedures for the Evolution LI156Ex bed.

Section 5: Parts List

Section 5 contains Hill-Rom's warranty, replacement
part ordering procedure, exchange policy, parts lists
and general service information.

Section 6: General Procedures

Section 6 contains cleaning, care and lubrication
requirements, preventive maintenance and Evolution
LI156Ex bed tool and supply requirements.

Section 7: Accessories

Section 7 presents the accessories for the Evolution
LI156Ex bed as well as illustrations and assembly
instructions.

1- 2 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Introduction

Typographical Conventions used

in this Manual

This manual contains different typographical
conventions designed to enhance the readability and
understanding of its content. Note the following
examples:

• Standard text — used for standard text
throughout the manual.

• Boldface text — emphasizes a word or phrase.

• NOTA: sets apart special information or

clarification of an important instruction.

• The symbol below highlights a WARNING or
CAUTION

exclam.tif

Figure 1-1. CAUTION

or WARNING symbol

• A CAUTION points out special procedures or
precautions that service personnel must follow
to avoid equipment damage.

• A WARNING identifies situations or actions that
may affect patient or user safety. Disregarding
a WARNING could result in patient or user injury.

• The symbol below highlights an electric shock
hazard warning:

Glossary of Abbreviations

CO ........................................Continuous Operation

CCW......................................... Counter Clockwise

CPR .......... Emergency release of Head Section for

............................ Cardio-Pulmonary Resuscitation

CW ......................................................... Clockwise

DMM............................................ Digital Multimeter

EOT ................................................... End of Travel

g/y ..................................................... Green/Yellow

HS .................................. Head-Section adjustment

HSH ................. Horizontal Symmetrical Headboard

IVP ............................................................ I.V. Pole

KS ..................................................... Knee Section

LED ........................................ Light-Emitting Diode

LS ........................................................ Leg-Section

NC ................................................ Normally Closed

NO .................................................. Normally Open

PCB ....................................... Printed Circuit Board

PT............................................................ Point Test

RAP ....................... Repair and Analysis Procedure

RS ....................................................... Rest Switch

S/A .................................................. Sub-Assembly

SH .................................... Symmetrical Headboard

Tr/Rev Tr ... Trendelenburg/Reverse Trendelenburg

VAC .................................. Volts Alternating Current

VDC......................................... Volts Direct Current

VH .................................................. Variable Height

1

warning.tif

Figure 1-2 - WARNING symbol

(Electric shock hazard)

Evolution LI156Ex Bed from Hill-Rom 1- 3

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

Operating Precautions

Before using the bed, it is important to read this
manual and understand it in detail, as well as to learn
and follow strictly all the safety instructions of the
manual. It is also necessary to be familiar with the
user manual of the bed.

Positions of the bed

The Evolution LI156Ex bed comprises:

- three adjustable sections: Head, Leg and Foot

(Knee).

- height adjustment of the sleep surface level.

- inclination of the bedframe (option) in Trendelenburg
(head down) or reverse Trendelenburg position (feet
down).

General Description

The Hill Rom Evolution LI156Ex bed has a double
control system. It is possible to use the mains power
supply or a battery (optional) to use the following
controls.

• Height of the bed (Variable Height)-raise/lower

• Raise/Lower Foot Section

• Raise/Lower Head Section

• Trendelenburg
These controls are electrically operated and are
accessible to the patient or the caregiver from the
side rails, hand-held control unit or the Variable Height
pedal (VH only).

Specifications

Specifications Dimensions

Outer length in high position
(basic version):

Outer length in high position

with extension (option) in use

2180mm (85.8")

2360mm (92.91")

Outer width (side-rails up) 1040mm (40.9")
Outer width (side-rails down) 935mm (36.8")
Height of sleep surface (low

position) depending on castor
mode.

(*) 10mm must be added to all
dimensions for beds with the
Bedside Cabinet Transport
option

Height of sleep surface (high
position) depending on castor
mode
(*) 10mm must be added to all
dimensions for beds with the
Bedside Cabinet Transport
option

Mini mum space under bed
double band castors
single band castors

Maxi mum Head Secti on
inclination

Knee Section inclination:
autocontour

Maxi mum Knee Secti on
inclination

Table 1-1: Specifications of the Evolution

LI156Ex Bed

440mm (17.32"):
double band(*)
448mm (17.64"):
integral (*)
452mm (17.8"):
single band(*)

780 mm (30.71"):
double band(*)
788 mm (31.02"):
integral (*)
792 mm (31.18"):
single band(*)

150mm (5.9")
162mm (6.4")

+68°

16°

+34°

1515Atbl_100

1- 4 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Introduction

Specifications Dimensions

Maximum Foot Section from the
hori zo ntal:
If KS is in high position:

Sleep surface inclination with
respect to horizontal:

Trend./Rev. Trend.

Maximum height of side-rail
above sleep surface

Maximum weight of bed (without
mattress or accessories)
For "Bedside Cabinet

Transport" option

Safe working load
For "Bedside Cabinet

Transport" option

maximum load lifted 250kg (551 Ib)

Table 1-2: Specifications of the Evolution

LI156Ex Bed (continued)

+16°

-22°

+12°/-12°

394mm (15.5")

172kg (379.43 Ib)

168kg (370.61 lb)

170kg (375 Ib)

220kg (485.3 lb)

1515Atbl_102

WARNING

Refer to the user manual of the
Evolution LI156Ex bed to avoid any
injury to the patient or user.

Functional Description

Head Section

The Head Section of the bed can be adjusted
independently in order to obtain the desired inclination
up to its maximum level. This function is activated
from the side-rail control, or with the hand-held control
unit (accessory).

Head Section angle indicators

The labels indicating the angle of the Head Section
are situated on either side of the bed on the bedframe.
These labels are graduated for approximately every
10° of Head Section inclination, up to a level of 70°.

CPR Release:

The bed has an emergency lower function for the
Head Section. The CPR control is situated under the
angle at either side of the Head Section.

Retractable Head Section

The backward retraction of the Head Section, while
the raise control is activated, enlarges the sitting area.
This type of position should reduce pelvic pressure
as well as the shearing forces, and allow the patient
to breathe more easily.

1

Knee Section

The Knee Section of the bed can be adjusted
independently to obtain the desired inclination up to
its maximum level. This function is activated from
the side-rail, or with the hand-held control unit
(accessory).

Knee Section angle indicators

The labels indicating the angle of the Head Section
are situated on either side of the bed on the bedframe.
These labels are graduated for approximately every
10° of Knee Section inclination, up to 50°.

Foot Section

The foot section of the Evolution LI156Ex bed can be
mechanically adjusted independently, to obtain the
desired inclination up to its maximum level when the
Knee Section is in the High position. This function
allows a number of possible angles, selected by
means of an release handle situated on either side of
the Foot Section.

Variable Height Function

The sleep surface of the bed may be raised or lowered
in order to move the patient or to facilitate getting on/
off the bed. The Variable Height function must be
operated by nursing staff only, using the side-rail
control or the Variable Height pedal (option or
accessory).

Evolution LI156Ex Bed from Hill-Rom 1- 5

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

Variable Height pedal

(optional or accessory)

The Evolution LI156Ex bed, has as an option or
accessory, a bilateral Variable Height pedal which
enables nursing staff to raise or lower the sleep
surface.

Trendelenburg/Reverse Trendelenburg

(optional)

The sleep surface can be inclined in 2 ways,

• in Trendelenburg: head of bed is lowered

• in Reverse Trendelenburg: foot of bed is

lowered.

The maximum scope of Trendelenburg movements
is obtained when the sleeping level is between the
mid and high positions.

This function is activated by a handle situated at the
foot of the bed.

The Trendelenburg function is assisted electrically by
the Variable Height motor and Reverse Trendelenburg
mechanically by a gas spring.

Auto-contour

Every Evolution LI156Ex bed has a special function
called “auto-contour”. This enables the KS of the bed
to be raised automatically to a preset angle when the
Head Section is raised from its horizontal position,
provided that the KS has not been locked on the lock­out control panel. The object of this function is to
prevent the patient slipping towards the foot of the
bed when the Head Section is raised.

Castors

The Evolution LI156Ex bed is equipped with 4
swivelling castors situated at the four corners of the
bedframe.

Braking

The bed has a central braking system which can be
foot-controlled by means of a simple pedal. Pressing
it simultaneously brakes the four castors.

Steering

The Evolution LI156Ex bed has a steering system
which improves handling of the bed while moving or
transferring a patient. The right-hand castor of the
head of the bed (patient viewpoint), or left-hand castor
of the foot of the bed (optional) is fixed in a longitudinal
position with respect to the bed when the pedal is
pressed down. In this way the bed can be steered
easily by pushing the foot or head-end of the
bedframe.

Side-rails

The Evolution LI156Ex bed has side-rails situated on
either side of the bed at the head and foot sections.
The side rails can be raised and lowered
independently and have an intermediate position for
getting the patient out of the bed. The side rails at the
head have controls which allow the electrical
adjustment of the Head and Knee Section inclinations
as well as the Variable Height function. When not
used, the side rails can be stored against the sleep
surface once they have been completely lowered.

Manual hand-held control unit (option

or accessory)

The manual hand-held control unit is an accessory
of the Evolution LI156Ex bed, and allows the patient
to raise or lower the Head Section and the Knee
Section.

Head and Footboards

The Evolution LI156Ex bed is equipped with vertically
removable boards at the head and the foot of the bed
which aid the mobility and steering of the bed by the
use of integrated handles. They have slots which allow
them to be quickly inserted into plastic brackets placed
on bars at the head and foot.

Footboard linen holder (optional)

The Evolution LI156Ex bed has a footboard linen
holder (optional) which takes the place of a removable
footboard. This board folds out horizontally from the
bar at the foot of the bed, and can be removed after
releasing the holding clips. In this position, it provides
a space to keep blankets. It can also be used as a
work surface during treatment not requiring transfer.
The maximum load suported is 15kg.

Board storage system and power

supply cable support

The two supports at the head-end bar of the bed can
be used to hold the headboard if required as well as
the power supply cable when the bed is being moved.
They can be stored against the head-end bar when
not used.

Bed extension

The optional bed extension is designed for tall
patients. It allows the overall length of the bed to be
increased by 18cm by sliding the crossbar of the foot
panel along its guide rails. The extension has three
different positions (6/12/18cm). The mattress can be
extended with the aid of a mattress extension cushion,
available as an accessory, when the extension has
been pulled out.

1- 6 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Introduction

Bedside Cabinet Transport option

The optional “Bedside Cabinet Transport” function is
designed to transport a bedside cabinet of the NM1B
or NM2B type on support rails integral to the frame
when moving the bed. The bed and bedside cabinet
can be moved with or without a patient in the bed.

Protective buffers

The protective buffers are situated on the four corners
of the bed, on the bedframe.

CAUTION

Removing the protective buffers may
damage the bed or surrounding equipment.

I.V. Pole Sockets

The bed has four IVP sockets, placed at each corner
of the bed. An I.V. pole (accessory) can be inserted
into each socket. The two sockets at the patient's
head also enables a patient helper to be attached.

Draining-bag hooks

The draining-bag hooks are situated in the middle,
on either side of the bed, below the level of the sleep
surface.

Electrical Description

WARNING

The use of electrical equipment
carries a potential risk of electric
shock. Personnel must be trained
and instructed in the inherent risks

of electrical equipment.

The electric circuit is physically isolated from the metal
parts of the bed.

The bed is equipped with Linak
Head Section, Knee Section and Variable Height
functions, which are controlled by means of a Linak
power supply unit.

The power unit operates with 220-240VAC 50-60Hz,
110-120VAC 50-60Hz or 100VAC 50-60Hz
(tolerances: see Section 3), and can be fitted with a
24VDC battery (optional). With this battery, the bed
can be controlled when it is not under mains supply.
A specific audible alarm can be heard when the
battery power is low. It is set off when a function of
the bed is activated. When the alarm sounds, the bed
must be reconnected to a mains socket so that the
battery can be recharged.

®

actuators for the

1

®

Every bed undergoes operating trials before delivery.
Insulation and earth connection checks are carried
out on each bed. All the beds have a current leakage
of less than 500µA and a maximum impedance of

0.2 ohm to earth.

Patient side-rail control panels

1512A100.tif

The patient side-rail control panel is located inside
each side-rail of the Head Section for ease of use.
The patient can control the Head and Knee Section
functions by pressing the buttons with coloured labels
on the two control panels.

Nurse side-rail control panels

1512A101.tif

Evolution LI156Ex Bed from Hill-Rom 1- 7

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

The nursing staff side-rail control panel is located on
the outside of each side-rail of the Head Section. The
control buttons face the personnel, thus reducing
access for the patient. The Variable Height function
of the bed can be controlled by pressing the buttons
on one of the two outer control panels.

Common features of the patient and nurse control
panels: the functions can be easily identified by
means of colour coding (see user manual). Also, there
are raised reference dots on the raising controls.

Function lock-out panel

Each electrical function of the bed must be locked
out depending on the condition of the patient. The
function lock-out panel is located at the foot of the
bed on the chassis cover. The position of each switch
on the lock-out panel is marked with a label that
indicates the various functions of the bed as well as
the locked/unlocked position, showing a closed
padlock (locked) or an open padlock (unlocked).

Motor-driven actuators

The operation of the Head Section, the Knee Section
and the Variable Height is made possible by means
of three separate motor-driven actuators. They are
all designed in such a way as to handle the risk of
discharge of liquid products under normal conditions
of use. These motor-driven actuators operate on 24
to 45VDC and have a connecting plug to facilitate
dismantling should problems arise. Each actuator
fulfils a particular function and has the following
features:

• Positions are controlled by internal or external
end of travel for the Head Section motor only.
Specific feature for a bed with Trendelenburg:
the Variable Height motor is switched off for
lowering by a special end of travel on the
chassis.

• Electronic overload protection in the power unit.

• Waterproof and shockproof motor housing

(waterproof level: see Section 3).

• Permanent lubrication.

Regulatory Requirements

The Evolution LI156Ex bed complies with the CE
Directive 93/42/CEE applicable to medical equipment.

Logo_CE.wmf logo_NF.wmf

The Evolution LI156Ex bed complies with the folloiwng
standards:

NF EN 60601-1

NF EN 60601-2-38

NF EN 60601-1-2

NF S-90-312

CAUTION

The cycle of usage (intermittent operation)
of the actuators must not exceed 6 min/hour.
Otherwise, the equipment may be damaged.

1- 8 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Introduction

General operation of the

Evolution LI156Ex Bed

WARNING: Reminder

This manual describes the overall
functions of the Evolution LI156Ex

bed and their use. It is in no way
meant to replace the user manual, whose
purpose is to describe these aspects in
detail. For precise information relating to the
use of the Evolution LI156Ex bed, see the
user manual.

Bed Positions

WARNING

The use of electrical equipment

carries a potential risk of electric

shock. Personnel must be trained
and instructed in the inherent risks of
electrical equipment.

Variable Height Function

In order to raise the sleep surface, press and hold
the Variable Height Raise button on the side-rail
control unit or Variable Height pedal. Release the
button or the pedal at the desired height.

In order to lower the sleep surface, press and hold
the Variable Height Lower button on the side-rail
control unit or Variable Height pedal. Release the
button or the pedal at the desired height.

Head Section

To raise the Head Section, press and hold the Head
Section Raise button on the side-rail control unit, or
on the hand-held control unit. Release the button at
the desired angle.

To lower the Head Section, press and hold the Head
Section Lower button on the side-rail control unit or
on the hand-held control unit. Release the button at
the required angle.

CPR Emergency Release

Activation of the Head Section Emergency Release
function:

• Hold one side of the Head Section and activate

one of the levers situated on either side.

• Keep the lever applied to control the lowering of

the Head Section.

Deactivating the Head Section CPR Release function:

Simply release the lever of the Head Section, which
will work normally when the Head Section "Raise"
function is activated.

Knee Section

In order to raise the Knee Section, press and hold
the Knee Section Raise button on the side-rail control
unit or the hand-held control unit. Release the button
at the desired angle.

In order to lower the Knee Section, press and hold
the Knee Section Lower button on the side-rail control
unit or the hand-held control unit. Release the button
at the desired angle.

Auto-contour

The Autocontour function can be locked out by turning
the Knee Section lock-out switch to the locked
position. If this function is to be used later, the switch
must be unlocked.

Bed lock-out functions

In order to lock out a function:

Turn the switch of the corresponding function to the
"locked out" position (padlock closed).

In order to unlock a function:

Turn the switch of the corresponding function to the
"unlocked" position (padlock open).

Steering

In order to put the bed in the steering position, step
on the green mark on the brake and steer pedal. The
following symbol also indicates the position of this
function (see user manual).

To get out of the steering position, step on the beige
mark on the brake and steer pedal to leave it in the
horizontal position. The following symbol also
indicates the neutral position of the pedal (see user
manual).

Operation of the side-rails

To raise the side-rail:

• pull the side-rail outwards until fully extended,

• rotate the side-rail upwards into the required

position (intermediate or fully raised).

Note: an audible click is heard for each position,

meaning that the rails are securely locked.

1

Evolution LI156Ex Bed from Hill-Rom 1- 9

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

To lower the side-rail:

• hold the side-rail in one hand and pull the lever
outwards with the other hand.

• rotate the side-rail downwards into the required
position (intermediate or fully lowered),

• release the lever,

• when the side-rail is fully lowered, push it back

into position under the bed.

Braking

In order to apply the brakes on the bed, step on the
beige mark on the brake and steer pedal. The
following symbol also indicates the position of this
function (see user manual).

To disengage the brakes, step on the green mark of
the brake and steer pedal until it is horizontal. The
following symbol also indicates the neutral position
of the pedal (see user manual).

Trend./Rev. Trend (optional)

The sleep surface can be tilted in two directions:
Trendelenburg (headend in low position), or Reverse
Trendelenburg (footend in low position). To tilt the
sleep surface, hold the footboard in one hand and
operate the release handle with the other. Set the
sleep surface to the required position then release
the handle to lock the bed (you will hear a click).

Headboards and Footboards

The boards can be removed by pulling them upwards.
As the headboard is not fixed, it can also be placed
under the patient during CPR procedures or stored
away on the supports at the head-end of the bed.

Footboard Linen holder (option)

The board is fixed to the bed by two clips under the
bedframe. To release the board, unclip it then lift it
upwards.

Hard surfaces in Head, Leg and Foot

Sections

Bedside Cabinet Transport (optional)

Fitting the bedside cabinet to the bed:

• Close the bedside cabinet doors and drawer and
put the eating tray on the bed in its folded
position,

• Release the brake, move the bed away from
the wall to free the headend section in order to
fit the bedside cabinet, then apply the brake,

• Remove the headboard,

• Set the sleep surface to the bedside cabinet

loading height, and headend bedside cabinet
support rails to approximately 20mm below the
aluminium rails of the
bedside cabinet,

• Raise the Head Section so
that the lateral angle
indicator lies within the
green area for use of the
"Bedside Cabinet
Transport" option,

• Slide the bedside cabinet onto the support rails,
with the bed's eating tray pointing outwards from
the bed (headend) to prevent crushing or pulling
on the power cord when fitting the bedside
cabinet,

• Operate the Variable Height raise so that the
bedside cabinet castors are about 30mm from
the floor to prevent any
impact when transproting
the bed (moving through
doorways, into lifts, etc.).
The Rev. Trendelenburg
lateral angle indicator must
always lie within the green
area for use of the
"Bedside Cabinet Transport" option,

• Disconnect the power cord and secure it on the
bed,

• Fit the headboard between the bedside cabinet
and the Head Section or on the head supports,

To remove the hard surfaces from the Head, Leg and
Foot sections, unclip them by lifting them up. Put the
panels in a safe place to avoid damage.

To install one of the hard surfaces, line up the
assembly clips with the metal plugs on the bedframe.
Press on the hard surface to clip it in.

• Lock out the electric functions of the bed before
moving the bed and bedside cabinet to prevent
any accidental handling that knocks the bedside
cabinet against the frame of the bed.

1- 10 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Introduction

Removing the bedside cabinet from the bed:

• Move the bed away from the wall to free the
headend section in order to remove the bedside
cabinet, then apply the brake,

• Connect the power cord,

• Remove the headboard,

• Unlock the electric functions of the bed,

• Operate the Variable Height lower function so

that the bedside cabinet castors touch the floor
and the bedside cabinet is no longer supported
by the rails,

• Remove the bedside cabinet from its support
rails, and avoid crushing or pulling on the power
cord when carrying out this operation,

• Fit the headboard,

• Release the brake, put the bed back into its

position, then apply the brake,

• Set the sleep surface to the required autocontour
position.

• Unlock the electric functions if necessary.

Warning

Since the “Tendelenburg/Reverse
Trendelenburg” and “Emergency

CPR” functions are unavailable with
the “Bedside Cabinet Transport” function,
nursing staff must check whether the
physiological state of the patient is
compatible with the transport conditions of
the bed. The bedside cabinet must be
removed when the bed has been transported.

Model Identification

Model Description

LI156Ex

Table 1-3. Model Identification

Ex-series Evolution
Bed

1

1512Atbl_101

Evolution LI156Ex Bed from Hill-Rom 1- 11

Technical Manual

Introduction

A HILLENBRAND INDUSTRY

Rev. 001

1

Safety Indications

WARNING

This manual describes the overall functions
of the Evolution LI156Ex bed and their use.
It is in no way meant to replace the user
manual, whose purpose is to describe these
aspects in detail. For precise information
relating to the use of the Evolution LI156Ex
bed, see the user manual.

WARNING

The use of electrical equipment carries a
potential risk of electric shock. Personnel
must be trained and instructed in the
inherent risks of electrical equipment.

WARNING

Unplug the bed before cleaning or
maintenance to avoid the risk of electric
shock. See the “Evolution LI156Ex Bed User
Manual” and relevant sections of this manual
for additional precautions.

WARNING

Unplug the mains supply of the bed before
disconnecting the power supply cables to
avoid the risk of electric shock.

WARNING

Electric current flows through the
connections when the bed is switched on.
Technical personnel may be injured if the bed
is not disconnected from its electricity
supply.

WARNING

Electric current flows through the
connections when the bed is switched on.
Trials conducted under these conditions
carry a risk of electric shock. Do not touch
any wire or terminal which conducts an
electric current.

WARNING

Personnel should never go under the sleep
surface or up to the edge of the bed. If
maintenance personnel have to go under the
bed, they must use adequate supports to
hold up the bedframe.

WARNING

The brake must always be on when the bed
does not need to be moved. The patient may
fall when leaning on the bed to climb on or

off, when the brake is not on.

WARNING

Only hospital maintenance personnel may
carry out maintenance procedures on the
Evolution LI156Ex Beds. Otherwise, there
may be a risk of injury to staff or patients.

WARNING

Only hospital maintenance personnel may
carry out troubleshooting on the Evolution
LI156Ex Beds. Otherwise, there may be a risk
of injury to staff or patients.

WARNING

Only use the recommended accessories for
the Evolution LI156Ex bed. Use of other
accessories may present safety hazards for
the patient or nursing staff.

WARNING

- When transporting the bed and bedside
cabinet, the electric functions of the bed
must be locked out.

- Never unload the bedside cabinet manually
from the support.

Disregarding these precautions may result
in injury.

CAUTION

Removing the protective buffers may damage the bed
or surrounding equipment.

CAUTION

The cycle of usage (intermittent operation) of the
actuators must not go beyond 6 min./60 min.
Otherwise, the equipment may be damaged.

CAUTION

Cleaning, disinfecting: Follow the recommendations
in the Evolution LI156Ex Bed User manual.

CAUTION

Do not use lubricant containing silicon on the Evolution
LI156Ex Bed. The self-lubricating qualities of the
bearings and rings will be affected.

1- 12 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Identification and warning labels

Introduction

1

LIT CLASSE 1 IPX4 TYPE B
230V - 50 HZ 320VA MAX
SERV. INTERMITTENT 10% 6min/h
Charge de fonctionnement
en sécurité : 170 KG
Charge maxi soulevée : 250 KG

A HILLENBRAND INDUSTRY

56330 PLUVIGNER - FRANCE

LI156Ex - LIT CLASSE 1 IPX4 TYPE B
230V - 50 HZ 320VA MAX
SERV. INTERMITTENT 10% 6min/h
Charge de fonctionnement
en sécurité : 220 KG
Charge maxi soulevée : 250 KG

A HILLENBRAND INDUSTRY

56330 PLUVIGNER - FRANCE

LI156Ex 123456 00 / 00 / 0000

A HILLENBRAND INDUSTRY

HRP000000001

56330 PLUVIGNER - FRANCE

A HILLENBRAND INDUSTRY

Branchement recommandé
pour une installation protégée par
différentiel au plus égal à 30 mA

F11088

1512A102.wmf

F11175

1512A114.wmf

F11101

1512A103.wmf

F11134

A HILLENBRAND INDUSTRY

Cette batterie ne doit être
montée que sur un lit équipé
de roulettes antistatiques

56330 PLUVIGNER - FRANCE

A HILLENBRAND INDUSTRY

LIT CLASSE 1 AVEC BATTERIE INTEGREE

BETT KLASSE 1 MIT INTERNER STROMVERBERROUNG

BED CLASS 1 WITH INTERNAL POWER SOURCE

56330 PLUVIGNER - FRANCE

F11137

1512A105.wmf

F10848A

1512A106.wmf

1512A107.wmf

56330 PLUVIGNER - FRANCE

1512A104.wmf

A CHAQUE UTILISATION, TOUJOURS S'ASSURER
DU BON VERROUILLAGE DE LA BARRIERE
BEI JEDEM GEBRAUCH BITTE DAS KORREKTE
EINSCHNAPPEN DES SPERRMECHANISMUSES PRUFENE
ALWAYS CHECK THE SIDE GUARD IS LOCKED IN POSITION

1512A108.wmf

En cas d absence de courant secteur, la fonction DECLIVE
du plan de couchage, est assuree de sa position basse a sa position milieu.
If the bed is not connected to the mains supply, the TREND POSITION can only
be obtained if the bed height is from the low to the middle position.
Im Falle eines Stromausfalls kann die Trendelenburgposition nur von der tiesfsten
bis zur mittleren H|henposition benutzt werden.

1512A109.wmf

Diagram 1.3 Identification and warning labels

Evolution LI156Ex Bed from Hill-Rom 1- 13

Technical Manual

1

Introduction

Notes:

A HILLENBRAND INDUSTRY

Rev. 001

1- 14 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Section Contents

A) Detailed Troubleshooting Method:

list below ................................................. 2- 2

Getting Started ....................................... 2- 2

Initial Actions ........................................... 2- 2

Function checks ..................................... 2- 3

Final Actions ............................................ 2- 4

Appendices: ........................................... 2- 4

2.1 No function works ................................... 2- 5

2.2 Bed Raise function not working ............ 2- 6

2.3 Bed Lower function not working ........... 2- 8

2.4 Head Section Raise function not

working .................................................... 2- 9

Troubleshooting Procedures

2. Troubleshooting
Procedures

2

2.5 Head Section Lower function not

working .................................................. 2- 10

2.6 Knee Section Raise function not

working .................................................. 2- 11

2.7 Knee Section Lower function not

working .................................................. 2- 12

2.8 The Autocontour does not work ......... 2- 13

2.9 Abnormal working of the bed when

running on the battery (option). ........ 2- 14

2.10 Reverse Trendelenburg does not function

correctly................................................. 2- 14

2.11 Trendelenburg does not function

correctly................................................. 2- 15

2.12 CPR release does not function

correctly................................................. 2- 16

2.13 Leg Section mechanism does not function

correctly................................................. 2- 16

2.14 Troubleshooting for side-rails and

hand pendant control unit ................. 2- 17

2.15 Troubleshooting for Variable Height

pedal ..................................................... 2- 19

B) Simplified general troubleshooting

method for the LI156Ex ........................ 2- 20

Evolution LI156Ex Bed from Hill-Rom 2- 1

Technical Manual

Troubleshooting Procedures

A) Detailed Troubleshooting Method: list below

A HILLENBRAND INDUSTRY

Rev. 001

2

Getting Started

Begin each procedure in this section with step 1.
Follow the sequence outlined (each step assumes
that the previous steps are correct). Each step is the
normal operational event of the product and can be
confirmed by answering Y (yes) or N (no) to the
question. Your response leads either to another step
in the procedure, a Repair and Analysis Procedure
(RAP), or the replacement of a component. If a
number of components are mentioned, replace them
in the order given.

Start with initial actions to collect the initial
information concerning the problem.

Perform the function checks to isolate/identify a
problem and verify the repair after completing each
corrective action (replacing or adjusting a part,
installation of a plug, etc.).

Perform the final actions after the function checks
in order to verify the repair.

If troubleshooting procedures do not isolate the
problem, ask for technical support from your National
Hill-Rom representative: refer to the last page of this
manual.

WARNING

Only maintenance personnel
approved by the hospital may carry
out troubleshooting on the Evolution
bed.

Note 1: The purpose of this troubleshooting method

is to limit as much as possible the number of spare
parts necessary and the cost incurred by a
breakdown analysis.

Initial Actions

Initial actions allow information to be collected from
operators concerning the Evolution LI156Ex bed.
Note the symptoms and any information concerning
the problem that the operator has identified. This
information helps to identify the probable cause.

1. A competent person is available to explain the

problem.

Yes No

⇓⇒Go to “Function Checks” page 2-3.

2. Ask this person to demonstrate or explain the
problem.

The problem can be duplicated.
Yes No

⇓⇒Go to “Function Checks” page 2-3.

3. The problem is due to an error on the part of the
operator.

Yes No

⇓⇒Go to “Function Checks” page 2-3.

4. Inform the operators of the necessity to refer to
the user manual procedures of the Evolution
LI156Ex bed. Perform the “Function Checks” on
page 2-3 to ensure the proper operation of the

Evolution LI156Ex bed.

Note 2: It is recommended that you lock out the

power-driven functions not concerned by the
breakdown analysis before beginning, or unplug the
bed if the breakdown is not connected to a
power-driven function. In this case also, lock out
all functions if the bed has a battery.

2- 2 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

Function Checks

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: To make troubleshooting easier, it is
necessary to have the test hand pendant control
unit (reference QD0534). This unit differs from the
model sold as an accessory (ref: AD091A) as it has
a VH function. This function cannot be used if the
QD0534 unit is connected via the cable designed
for the AD091A accessory.

1. Unlock all the functions.

Initial actions have been performed.
Yes No

⇓⇒Go to “Initial Actions” page 2-2

2. Press the Raise control of the VH function, then
the Raise pedal control.

The bed rises.
Yes No

⇓⇒Go to RAP 2.2 page 2-2.

3. Press the Lower control of the VH function, then
the Lower pedal control.

The bed goes down.
Yes No

⇓⇒Go to RAP 2.3 page 2-8.

4. Lock out the Knee Section. Press the HS RAISE
button.

The Head Section rises.
Yes No

⇓⇒Go to RAP 2.4 page 2-9.

5. Keep the KS locked out and press the HS DOWN
button.

The Head Section goes down.
Yes No

⇓⇒Go to RAP 2.5 page 2-10.

6. Lock out the KS function. Press the KS RAISE
button.

The Knee Section rises.
Yes No

⇓⇒Go to RAP 2.6 page 2-11.

7. Press the KS down button.

The Knee Section goes down.
Yes No

⇓⇒Go to RAP 2.7 page 2-12.

8. Press the HS RAISE button from the horizontal
position of the bedframe.

The HS and KS rise simultaneously, then the
KS stops at an angle approaching 16° while the
HS continues to rise to its highest position.

Yes No

⇓⇒Go to RAP 2.8 page 2-13.

9. Press the HS DOWN switch from its highest
position. The Head Section goes down, the Knee
Section also descends when the Head Section is
at an angle of about 22°.

The two sections continue to descend as far as
the horizontal position.
Yes No

⇓⇒Go to RAP 2.8 page 2-13.

10. For a battery-operated bed (optional): Unplug the
mains plug and test the functions already
mentioned.

The bed works properly.
Yes No

⇓⇒Go to RAP 2.9 page 2-14.

11. Bed with Trendelenburg/Reverse Trendelenburg:
Raise the bed to its high position and activate the
Trendelenburg function.

The bed assumes a Trendelenburg position
without any problem or abnormal noise.
Yes No

⇓⇒Go to RAP 2.10 page 2-14.

12. Bed with Trendelenburg/Reverse Trendelenburg:
Raise the bed to its high position and activate the
Reverse Trendelenburg function.

The bed drops gradually to a Reverse
Trendelenburg position without any problem or
abnormal noise.
Yes No

⇓⇒Go to RAP 2.11 page 2-15.

13. Press the Head Section RAISE switch until it rises
to its high position. Activate the two CPR levers
(emergency release of the Head Section) one at
a time.

The Head Section descends quickly without any
problem or abnormal noise.
Yes No

⇓⇒Go to RAP 2.12 page 2-16.

14. Press the Knee Section RAISE switch until the
Knee Section is in its high position. Activate the
two mechanical levers of the Adjustable Leg
Section one at a time and release them so that
they lock into their various catches.

The Adjustable Leg Section rises, comes down
and locks into its various positions without any
problem or abnormal noise.
Yes No

⇓⇒Go to RAP 2.13 page 2-16.

Go to "Final Actions" page 2-4

2

Evolution LI156Ex Bed from Hill-Rom 2- 3

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

Final Actions

1. Perform the required preventative maintenance
procedures. See “Preventive Maintenance” in
Section 6 of this manual.

2. Carry out all necessary administrative tasks.

Appendices:

Appendix 1

• Two people are required to perform the test

indicated.

Appendix 2

• Diagram for the power unit and T-cable with

socket markings:

Power unit

LI156Ex BED

S MAINS POWER CABLE
B

BATTERY

CCONTROL

T-CABLE: LOCK-OUT,

1

VARIABLE HEIGHT PEDAL,

Tr./Rev.Tr. I/O SWITCHES
2
3

4

VARIABLE HEIGHT MOTOR

HEAD SECTION MOTOR

KNEE SECTION MOTOR

1512A200.tif

1512Atbl_200

T-cable connections

Yello w

VH

Red/Green
Do no t us e

1

2
3
4

5

1512_201.wmf

White

White

Blue

Brown

KS

T-cable

RED

ORANGE

YELLOW

VIOLET

WHITE

Connector

Grey

HS

1
2
3

4
5
6

7

He14

T- cable wiring diagram

YELLO W

WHITE

GREY

VIOLETVIOLET

BROWN

BLUE

RED

GREEN

E
T

I
H

VIOLET

W

P1

SH IE LD ING

1

2
3

4

5

6

7

8

GREY

WHITE

BROWN

BLUE

YELLO W

ORANGE

RED

GREEN

W
O

L

D

L

E

E

R

ORANGE

Y

1512A211.wmf

Trend./Rev. Trend. I/O switches

Trendelenburg: teminals 4-5,

Rev. Trendelenburg assist: terminals 1-2

Violet

7

6

5

Shie lding

8

P3

1

2

3

1

BROWN

2

PINK

3
4

GREY

5

WHITE

6
7

1512_202.wmf

2- 4 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

S

g

Rev. 001

Troubleshooting Procedures

2.1 No function works

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: This RAP also assumes that no function
works from the VH pedal or the hand pendant
control unit, if the bed has one.

Note: Power unit connections: refer to appendix 2
page 2-4.

1. Power unit indicator test:

Check that the green light on the power unit is
on.

The green LED is lit.
Yes No

⇓⇒Go to step 5

2. Lock-out switch test:

Check that all the lock-out switches are in the
"unlocked" position.

The switches are in the "unlocked" position.
Yes No

⇓⇒Go to step 4

3. Turn the switches to the "unlocked" position and
go to "Function Checks" on page 2-3.

4. T-cable continuity test:

Disconnect socket 1 of the power unit and use
an ohm-meter to check for continuity between the
common: terminal 6 and terminals 2, 3, 4 and 5.

hieldin

7

6

5

The continuity is correct.
Yes No

⇓⇒Check for continuity between each wire

and the connector according to the
following table, then for the continuity of
the lock-out switches. Change the
defective cable or switch and go
to ”Function Checks" page 2-3.

1

8

2

3

4

1512_203.wmf

Wire

colour

Yellow 6 Common

White 6 Common

Grey 6 Common

Violet 4 Variable Height: raise

White 2 Variable Height: lower

Brown 5 Head Section

Blue 3 Leg Section

5. Power supply cable connection test:

Check the connection of the power cable with the
unit.

The connection is correct.
Yes No

⇓⇒Connect the cable properly and go

Terminal Lock-out functions

1512Atbl_201

to ”Function Checks” on page 2-3.

WARNING

Electric current flows through the
connections when the bed is
switched on. Trials conducted under

these conditions carry a risk of
electric shock. Do not touch any wire or
terminal which conducts an electric current.

6. Mains supply test:

Check that the mains supply is present on the
input of the power cable by disconnecting it from
the power unit with a screwdriver. Measure the
mains voltage with a multimeter.

The mains voltage is present.
Yes No

⇓⇒Go to step 8.

7. Go to step 11.

8. Check that there is voltage on the mains plug by

using a multimeter.

The mains voltage is present on the plug.
Yes No

⇓⇒Repair the mains plug, and go to

”Function Checks” page 2-3.

9. Change the power cable.

This solves the problem.
Yes No

⇓⇒Go to step 11.

2

Evolution LI156Ex Bed from Hill-Rom 2- 5

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

10. Go to ”Function Checks” page 2-3.

11. Side-rail function test:

Disconnect the “control” input connector from the
power unit and connect the 3-function test unit
QD0534.

The bed functions.
Yes No

⇓⇒Go to step 13.

12. The problem is linked with the side-rail circuit.
Follow RAP 2-14.

13. Power unit test.

Replace the power unit.

This solves the problem.
Yes No

⇓⇒Go to step 15.

14. Go to “Function Checks” page 2-3.

15. VH motor test.

Replace the VH motor.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, see the last page of this
manual.

16. Go to ”Function Checks” on page 2-3.

2.2 Bed Raise function not
working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the VH function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1 page 2-5.

2. Side-rail function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

The bed rises.
Yes No

⇓⇒Go to step 4

3. The problem is linked with the side-rail circuit.

Follow RAP 2-14.

4. Lock-out switch test: Check for the proper

functioning and electrical continuity of the VH
function using an ohm-meter.

The switch functions correctly.
Yes No

⇓⇒Change the switch. If this solves the

problem, go to "Function Checks" on
page 2-3. Otherwise, go to the next step.

5. The bed is equipped with a battery.

Yes No

⇓⇒Go to step 8

6. Battery test: Disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 8

7. Replace the battery. If this solves the problem,

go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

8. Trend./Rev. Trend switch test: If the bed has

the Trendelenburg/Reverse Trendelenburg
function, disconnect the Trend./Rev. Trend Switch
I/O.

The bed rises.
Yes No

⇓⇒Go to step 10

2- 6 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

9. Replace the Trend./Rev. Trendelenburg switch.
If this solves the problem, go to "Function Checks"
on page 2-3. Otherwise, change the power unit
and go to "Function Checks" on page 2-3.

10. Pedal function test. If the bed has the VH pedal
function, open the chassis junction box and
disconnect the pedal connector.

The bed rises.
Yes No

⇓⇒Go to step 12

11. The problem is linked with the VH pedals. Follow
RAP 2-15.

12. T-cable test: Disconnect connector 1 from the
power unit and use an ohm-meter to check the
continuity between terminal 6 and the yellow wire,
then between terminal 4 and the violet wire on
the switches (see Appendix 1 and 2 page 2-4).

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

13. Using an ohm-meter, check for an open circuit
between terminal 7, terminal 1 and terminal 8 (see
Appendix 1 page 2-4).

There is an open circuit.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

14. Printed circuit test:

Using an ohm-meter, check the continuity of the
different tracks of the printed circuit using the
terminals available.

There is continuity.
Yes No

⇓⇒Change the defective printed circuit and

go to “Function Checks” page 2-3.

15. Power unit test: Replace the power unit.

This solves the problem.
Yes No

⇓⇒Go to step 17

16. Go to “Function Checks” page 2-3,

17. VH motor test: Replace the Variable Height
motor.

This solves the problem.

Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manuel.

18. Go to ”Function Checks” on page 2-3.

2

Evolution LI156Ex Bed from Hill-Rom 2- 7

Technical Manual

2

g

Troubleshooting Procedures

2.3 Bed Lower function not
working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the VH function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1 page 2-5.

2. Battery function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

The bed lowers.
Yes No

⇓⇒Go to step 4

3. The problem is linked with the side-rail circuit.

Follow RAP 2-14.

4. Lock-out switch test: Check for the proper

functioning and electrical continuity of the VH
function using an ohm-meter.

The switch functions correctly.
Yes No

⇓⇒Change the switch. If this solves the

problem, go to "Function Checks" on
page 2-3. Otherwise, go to the next step.

5. The bed is equipped with a battery.

Yes No

⇓⇒Go to step 8

6. Battery test: Disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 8

7. Replace the battery. If this solves the problem,

go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

8. The bed has the Trendelenburg/Reverse

Trendelenburg function.

Yes No

⇓⇒Open the chassis junction box and check

that there is or fit, the Trendelenburg shunt
connector (see figure1) to connector C1,
C2 or C3 (according to availability) of the
printed circuit. If this solves the problem,
go to “Function Checks” page 2-3.
Otherwise, go to step 11.

A HILLENBRAND INDUSTRY

1234567

Polarizing notches

Trendelenbur

9. Trend./Rev. Trend. switch test: If the bed has
the Trendelenburg/Reverse Trendelenburg
function, open the chassis junction box and
disconnect the Trendelenburg I/O switch. Check
the EOT continuity between terminals 4 and 5 of
the HE14 connector (refer to Appendix 2, page
2-4). There should be a NC (Normally Closed)
contact.

The End-of-Travel functions.
Yes No

⇓⇒Replace the Trendelenburg/Reverse

Trendelenburg switch. If this solves the
problem, go to "Function Checks" on
page 2-3. Otherwise, change the power
unit and go to "Function Checks" on page
2-3.

10. Pedal function test: If the bed has the VH pedal
function, open the chassis junction box and
disconnect the pedal connector.

The bed lowers.
Yes No

⇓⇒Go to step 12

11. The problem is linked with the VH pedals. Follow

RAP 2-15.

12. T-cable test: Disconnect connector 1 from the
power unit and use an ohm-meter to check the
continuity between terminal 6 and the yellow wire,
then between terminal 4 and the violet wire on
the switches (refer to Appendices 1 and 2, page
2-4). Then check for continuity between terminal
8 and the red wire, between terminal 1 and the
orange wire, between terminal 2 and the white
wire, as well as between terminal 7 and the yellow
wire on the HE14 connector.

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

13. Using an ohm-meter, check for an open circuit
between terminal 7, terminal 1 and terminal 8
(refer to Appendices 1 and 2, page 2-4)

EOT shunt

Figure 1

Rev. 001

1512_204.wmf

2- 8 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

There is an open circuit.

Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

14. Printed circuit test:

Using an ohm-meter, check the continuity of the
different tracks of the printed circuit using the
terminals available.

There is continuity.
Yes No

⇓⇒Change the defective printed circuit and

go to “Function Checks” page 2-3.

15. Power unit test: Replace the power unit.

This solves the problem.
Yes No

⇓⇒Go to step 17

16. Go to “Function Checks” page 2-3,

17. VH motor test: Replace the Variable Height
motor.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manuel.

18. Go to ”Function Checks” on page 2-3.

2.4 Head Section Raise function
not working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the HS function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1 page 2-5.

2. HS motor engagement test:

The motor seems to be running while out of
gear.
Yes No

⇓⇒Go to step 4.

3. Check that the HS motor engagement cable is

not too taut (refer to Section 4).

The engagement cable is adjusted correctly.
Yes No

⇓⇒Lower the Head Section completely in

order to adjust the engagement cable. If
this solves the problem, go to "Function
Checks" on page 2-3. Otherwise, go to
step 4.

4. Side-rail function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

WARNING

The Head Section EOTs are not
controlled if the "control” input

connector is unplugged. Do not
operate the HS motor at the upper and lower
end-of-travels.

Disregarding this precaution may damage
the motor engagement and provoke injuries.

The Head Section rises.
Yes No

⇓⇒Go to step 6

5. The problem is linked with the side-rails circuit.

Follow RAP 2-14.

6. Lock-out switch test: Check for the proper

functioning and electrical continuity of the HS
function lock-out switch using an ohm-meter.

2

Evolution LI156Ex Bed from Hill-Rom 2- 9

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

The switch functions correctly.
Yes No

⇓⇒Change the switch. If this solves the

problem, go to "Function Checks" on
page 2-3. Otherwise, go to the next step.

7. T-cable test: Disconnect connector 1 from the
power unit and use an ohm-meter to check the
continuity between terminal 6 and the grey wire,
then between terminal 5 and the brown wire at
the switches (see Appendices 1 and 2 page 2-4).

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

8. Plug the bed back in.

The bed has a battery.
Yes No

⇓⇒Go to step 11

9. Battery test: disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 11

10. Replace the battery. If this solves the problem,
go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

11. Head Section motor test: Replace the HS motor
with its switch management system.

This solves the problem.
Yes No

⇓⇒Go to step 13.

12. Go to ”Function Checks” on page 2-3.

13. Power unit test: Replace the HS motor and
change the power unit.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

14. Go to ”Function Checks” on page 2-3.

2.5 Head Section Lower function
not working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the HS function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1, page 2-5.

2. Side-rail function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

WARNING

The Head Section EOTs are not
controlled if the "control” input

connector is unplugged. Do not
operate the HS motor at the upper and lower
end-of-travels.

Disregarding this precaution may damage
the motor engagement and provoke injuries.

The HS lowers.
Yes No

⇓⇒Go to step 4

3. The problem is linked with the side-rails circuit.

Follow RAP 2-14.

4. Lock-out switch test: Check for the proper

functioning and electrical continuity of the HS
function lock-out switch using an ohm-meter.

The switch functions correctly.
Yes No

⇓⇒Change the switch. If this solves the

problem, go to "Function Checks" on
page 2-3. Otherwise, go to the next step.

5. T-cable test: Disconnect connector 1 from the

power unit and use an ohm-meter to check the
continuity between terminal 6 and the grey wire,
then between terminal 5 and the brown wire at
the switches (see Appendices 1 and 2 page 2-4).

2- 10 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

6. The bed has a battery.

Yes No

⇓⇒Go to step 9.

7. Battery test: Disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 9.

8. Replace the battery. If this solves the problem,
go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

9. Head Section motor test: Replace the HS motor
and its switch management system.

This solves the problem.
Yes No

⇓⇒Go to step 11.

10. Go to ”Function Checks ” page 2-3.

11. Power unit test: Replace the HS motor and
change the power unit.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

12. Go to ”Function Checks” on page 2-3.

2.6 Knee Section Raise function
not working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the KS function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1, page 2-5.

2. Side-rail function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

The KS rises.
Yes No

⇓⇒Go to step 4.

3. The problem is linked with the side-rails circuit.

Follow RAP 2-14.

4. T-cable test: Disconnect connector 1 from the

power unit and use an ohm-meter to check the
continuity between terminal 6 and the white wire,
then between terminal 3 and the blue wire at the
switches (see Appendices 1 and 2 page 2-4).

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

5. The bed has a battery.

Yes No

⇓⇒Go to step 8.

6. Battery test: Disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 8.

7. Replace the battery. If this solves the problem,

go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

8. Knee Section motor test: Replace the KS motor.

This solves the problem.
Yes No

⇓⇒Go to step 10.

2

Evolution LI156Ex Bed from Hill-Rom 2- 11

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

9. Go to ”Function Checks” on page 2-3.

10. Power unit test: Replace KS motor and change
the power unit.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, see the last page of this
manual.

11. Go to ”Function Checks” on page 2-3.

2.7 Knee Section Lower function
not working

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the KS function lock-out switch is in
the "unlocked" position.

1. At least one of the other functions is working.

Yes No

⇓⇒Go to RAP 2.1, page 2-5.

2. Side-rail function test: Disconnect the “control”

input connector from the power unit and connect
the 3-function test unit QD0534.

The KS lowers.
Yes No

⇓⇒Go to step 4.

3. The problem is linked with the side-rails circuit.

Follow RAP 2-14.

4. T-cable test: Disconnect connector 1 from the

power unit and use an ohm-meter to check the
continuity between terminal 6 and the white wire,
then between terminal 3 and the blue wire at the
switches (see Appendices 1 and 2 page 2-4).

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, go to the next step.

5. Plug the bed back in.

The bed has a battery.
Yes No

⇓⇒Go to step 8.

6. Battery test: Disconnect the battery.

The bed functions normally.
Yes No

⇓⇒Go to step 8.

7. Replace the battery. If this solves the problem,

go to "Function Checks" on page 2-3. Otherwise,
change the power unit and go to "Function
Checks" on page 2-3.

8. Knee Section motor test: Replace the KS motor.

This solves the problem.
Yes No

⇓⇒Go to step 10.

2- 12 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

9. Go to ”Function Checks” on page 2-3.

10. Power unit test: Replace KS motor and change
the power unit.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

11. Go to ”Function Checks” on page 2-3.

2.8 The Autocontour does not
work

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the HS and KS function lock-out
switches are in the "unlocked" position.

1. HS and KS function test: Perform the ”Function

Checks” on page 2-3 up to step 7.

The 7 steps were performed with no problems.
Yes No

⇓⇒Perform the required RAP's in the

”Function Checks” on page 2.3 and return
to step 1 of the RAP.

2. Autocontour raise test: Press the raise button

of the HS function from the horizontal position of
the bedframe.

The Head Section and Knee Section rise
simultaneously, and the Knee Section stops at
an angle approaching 16° while the Head
Section continues to rise to its highest position.
Yes No

⇓⇒Replace the KS motor. If this solves the

problem, go to “Function Checks” on page
2-3. Otherwise, change the power unit
and go to “Function Checks” on page
2-3.

3. Autocontour lower test: Press the lower button

of the “Head Section” function from its highest
position. The Head Section lowers, then the Knee
Section begins to lower when the Head Section
is at an angle approaching 22°.

Both sections continue to lower until they reach
the horizontal position.
Yes No

⇓⇒Replace the HS actuator with its switch

management system. If this solves the
problem, go to “Function Checks” on page
2-3. Otherwise, change the power unit
and go to “Function Checks” on page
2-3.

4. Go to ”Function Checks” on page 2-3.

2

Evolution LI156Ex Bed from Hill-Rom 2- 13

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

2.9 Abnormal working of the
bed when running on the
battery (optional).

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the function lock-out switches are in the
"unlocked" position.

1. Connect the bed to a mains plug. Disconenct

the battery.

2. Perform the ”Function Checks” on page 2-3 up

to step 7.

The 7 steps were performed with no problems.
Yes No

⇓⇒Perform the required RAP's in the

”Function Checks” on page 2.3 and return
to step 1 of the RAP.

3. Battery charge test: Connect the battery. Leave

the bed connected to the mains for about ten
hours. Then disconnect the mains and perform
the ”Function Checks ” on page 2-3 up to step 7
without carrying out the proposed RAPs.

The 7 steps were performed with no problems.
Yes No

⇓⇒Go to step 4.

4. It is important to note that the battery must be

recharged immediately after use. Perform the
”Function Checks ” on page 2-3.

5. Battery test: Connect a new battery. connect the

bed to a mains source for 2 minutes then unplug
it. Perform the ”Function Checks” on page 2­3 up to step 7 without carrying out the proposed

RAPs.

The 7 steps were performed with no problems.
Yes No

⇓⇒Power unit test: Replace the power unit.

If this solves the problem, perform the
”Function Checks” on page 2-3.
Otherwise contact your National Hill-Rom
representative, refer to the last page of
this manual.

6. Install the new battery on the bed, then perform

the ”Function Checks” on page 2-3.

2.10 Reverse Trendelenburg does
not function correctly

Note: Refer to the abbreviations on page 1-3 of
this manual.

Note: Power unit connections: refer to appendix 2
page 2-4.

Check that the VH function lock-out switch is in the
"unlocked" position.

1. Perform the ”Function Checks ” on page 2-3 up

to step 3.

The 3 steps were performed with no problems.
Yes No

⇓⇒Perform the required RAP's in the

”Function Checks” on page 2.3 and return
to step 1 of the RAP.

2. Trendelenburg test: Press the bed raise control

until the bed reaches its high position. Initiate the
Trendelenburg function.

The Trendelenburg function works.
Yes No

⇓⇒Go to step 7.

3. Reverse Trendelenburg Assist switch test:

Open the chassis junction box and disconnect
the Trendelenburg/Reverse Trendelenburg assist
I/O switch. Test the operation of the Reverse
Trendelenburg Assist switch with an ohm-meter
between terminals 1 and 2 of the HE14 connector
(refer to Appendix 2, page 2-4). There should be
a NO (Normally Open) contact.

The switch functions.
Yes No

⇓⇒Replace the Trendelenburg Assist switch

and go to ”Function Checks” on page 2-

3.

4. T-cable test: Disconnect connector 1 from the

power unit and use an ohm-meter to check the
continuity between terminal 1 and the orange wire,
then between terminal 8 and the red wire at the
HE14 connector (refer to Appendices 1 and 2,
page 2-4).

There is continuity.
Yes No

⇓⇒Replace the T-cable and plug the bed

back in. If this solves the problem, go to
"Function Checks" on page 2-3.
Otherwise, change the power unit and go
to "Function Checks" on page 2-3.

2- 14 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Troubleshooting Procedures

5. Power unit test: Change the power unit.

This solves the problem.
Yes No

⇓⇒Go to step 7.

6. Go to ”Function Checks” on page 2-3.

7. Check the mechanical condition of the bed:
Check that screws, bolts or pins are not damaged
or missing at the handle or the Trendelenburg/
Reverse Trendelenburg mechanism (refer to the
corresponding assembly drawing in section 5).

There are no missing or damaged catches,
screws or pins.
Yes No

⇓⇒Replace the damaged or missing parts

and go to ”Function Checks ” page 2-3.

8. Trendelenburg/Reverse Trendelenburg
control cable: Check that the Trendelenburg/
Reverse Trendelenburg cable is not broken.

The cable is intact.
Yes No

⇓⇒Replace the cable by referring to

procedure 4.12 of Section 4.

9. Cable adjustment control: Check that the
Trendelenburg/Reverse Trendelenburg cable
adjustment is correct by referring to procedure

4.12.

The adjustment is correct.
Yes No

⇓⇒Adjust the cable by referring to procedure

4.12 of Section 4.

10. Replace the Trendelenburg/Reverse
Trendelenburg mechanism by referring to
procedure 4.13, Section 4.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

11. Perform the ”Function Checks” on page 2-3.

2.11 Trendelenburg does not
function correctly

1. Perform the ”Function Checks ” on page 2-3 up

to step 3.

The 3 steps were performed with no problems.
Yes No

⇓⇒Perform the required RAP's in the

”Function Checks” on page 2-3 and return
to step 1 of the RAP.

2. The Trendelenburg function works but the

movement is too rapid.

Yes No

⇓⇒Go to step 4.

3. Replace the Trendelenburg gas spring by

referring to procedure 4.14, Section 4, and go to
”Function Checks” on page 2-3.

4. Check the mechanical condition of the bed:

Check that screws, catches or pins are not
damaged or missing at the handle or the
Trendelenburg/Reverse Trendelenburg
mechanism (refer to the corresponding assembly
drawing in Section 5).

There are no missing or damaged catches,
screws or pins.
Yes No

⇓⇒Replace the damaged or missing parts

and go to ”Function Checks ” page 2-3.

5. Check that the Trendelenburg/Reverse

Trendelenburg cable is not broken.

The cable is intact.
Yes No

⇓⇒Replace the cable by referring to

procedure 4.12 of Section 4.

6. Check that the Trendelenburg/Reverse

Trendelenburg cable adjustment is correct by
referring to procedure 4.12.

The adjustment is correct.
Yes No

⇓⇒Adjust the cable by referring to procedure

4.12 of Section 4.

7. Replace the Trendelenburg/Reverse

Trendelenburg mechanism by referring to
procedure 4.13, Section 4.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

8. Perform the ”Function Checks ” on page 2-3.

2

Evolution LI156Ex Bed from Hill-Rom 2- 15

Technical Manual

Troubleshooting Procedures

A HILLENBRAND INDUSTRY

Rev. 001

2

2.12 CPR release does not
function correctly

1. Perform the "Function Checks" on page 2-3 up

to step 5.

The 5 steps were performed with no problems.
Yes No

⇓⇒Perform the required RAP's in the

”Function Checks” on page 2-3 and return
to step 1 of the RAP.

2. Check the mechanical condition of the bed:

Remove the laminated hard surfaces from the
bedframe. Check that screws, catches or pins are
not damaged or missing near the release handles
or the Trendelenburg/Reverse Trendelenburg
mechanism (refer to the corresponding exploded
assembly diagram, Section 5).

There are no missing or absent bolts, screws
or pins.
Yes No

⇓⇒Replace the damaged or missing parts

and go to "Function Checks" on
page 2-3.

3. Cable check: Check that the gear cable(s) is/

are not broken.

The cable(s) is/are intact.
Yes No

⇓⇒Replace the gear cable(s) by referring to

procedure 4.16, Section 4.

4. Check that the gear cable adjustment is correct

by referring to procedure 4.16.

The adjustment is correct.
Yes No

⇓⇒Adjust the cable(s) by referring to

procedure 4.16, Section 4.

5. Replace the HS motor by referring to

procedure 4-9.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

6. Perform the ”Function Checks” on page 2-3.

2.13 Leg Section mechanism
does not function correctly

1. Unlock the KS function. Press the KS RAISE

control until the bed reaches the high position.

The section rises normally.
Yes No

⇓⇒Go to RAP 2.6 of Section 4.

2. Check the mechanical condition of the bed:

Remove the laminated hard surfaces from the
footend of the bedframe. Check that screws,
catches or pins are not damaged or missing near
the release handles or the Leg Section
mechanism.

There are no missing or absent catches, screws
or pins.
Yes No

⇓⇒Replace the damaged or missing parts

and go to "Function Checks" on
page 2-3.

3. Cable check: Check that the double cable of the

Leg Section mechanism is not broken.

The cable is intact.
Yes No

⇓⇒Replace the cable by referring to

procedure 4.22 of Section 4.

4. Cable adjustment check: Check that the Leg

Section mechanism cable adjustment is correct
by referring to procedure 4.22 of Section 4.

The adjustment is correct.
Yes No

⇓⇒Adjust the cable for each handle by

referring to procedure 4.22, Section 4.

5. Replace the Leg Section mechanism by referring

to procedure 4.23, Section 4.

This solves the problem.
Yes No

⇓⇒Contact your National Hill-Rom

representative, refer to the last page of
this manual.

6. Perform the “Function Checks” on page 2-3.

2- 16 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

S

g

S

g

ermediate connectio

Rev. 001

Troubleshooting Procedures

2.14 Troubleshooting for side-rails
and hand pendant control
unit

Note: Hand pendant control unit is optional or an
accessory.

Note: Hand pendant control unit cable (option) does
not have wires for the VH function.

Unplug the bed from the mains supply.

1. Disconnect the “control” input connector from the

power unit (connection: refer to Appendix 2, page
2-4). Check for electrical continuity between
terminal 8 (common) and the terminal of the faulty
function on the round male 8-pin connector using
an ohm-meter. Test both side-rails and the hand
pendant control unit while pressing the control
corresponding to the function being tested.

hieldin

7

6

5

Function

HS Lower 2

HS Raise 3

KS Raise 7

KS Lower 4

VH Lower 1

VH Raise 9

Common 8

The resistance must be 100 ohms when the
control is pressed and infinite when released.
Yes No

⇓⇒Go to step 3.

2. The problem does not come from the side-rail or

the hand pendant control unit. Contact your
National Hill-Rom representative, refer to the last
page of this manual.

3. The bed has the hand pendant control unit

option.

Yes No

⇓⇒Go to step 6.

4. The problem only occurs with the hand

pendant control unit.

1

8

2

3

4

1512_203.wmf

8-point round male

connector

1512Atbl_202

Yes No

⇓⇒Go to step 6.

5. Hand pendant control unit cable test.

Open the junction box, remove the printed circuit
board, then remove the connector corresponding
to the hand pendant control unit. Test the electrical
continuity between the terminals of the faulty
functions using an ohm-meter (see table).

Function

7-pin flat

female

8-pin round

male connector

connector

HS Lower 1 white 2

HS Raise 2 blue 3

KS Raise 3 yellow 7

KS Lower 4 violet 4

Common 7 red 8

1512Atbl_203

There is continuity.
Yes No

⇓⇒Replace the defective hand pendant

control unit cable and go to "Function
Checks" on page 2-3.

6. The problem only occurs from the side-rail.

Yes No

⇓⇒Test the cable linking the printed

circuit with the power unit:

Open the bedframe junction box, remove
the printed circuit board. Remove the
connector of the cable linking the printed
circuit with the power unit. Disconnect the
"control" input connector from the power
unit. Test the electrical continuity between
the terminals of the faulty functions using
an ohm-meter (see diagrams and table).

hieldin

8

4

7
6
5
4
3
2
1

1

2

3

Red
Green

Orange
Violet

Yellow

Blue

White

1512_203.wmf

Common

VH Raise
VH Lower
KS Lower

KS Raise
HS Raise

HS Lower

n

1512_205.wmf

7

6

5

Polarizing
notches

Int

2

Evolution LI156Ex Bed from Hill-Rom 2- 17

Technical Manual

Troubleshooting Procedures

S

S

S

A HILLENBRAND INDUSTRY

Rev. 001

2

Function

7-pin flat

female

8-pin round

male connector

connector

HS Lower 1 white 2

HS Raise 2 blue 3

KS Raise 3 yellow 7

KS Lower 4 violet 4

VH Lower 5 orange 1

VH Raise 6 green 9

Common 7 red 8

1512Atbl_204

If there is good continuity go to step 6.
Otherwise, change the defective cable
and go to "Function Checks" on
page 2-3.

7. Side-rail function test:

Open the junction box, remove the printed circuit
board. Remove the connector of the side-rail to
be tested. Test the electrical continuity between
terminal 7 (brown) and the terminal of the faulty
function (see figure below) while pressing the
control of the function to be tested.

7

Polarizing
notches

Brown

6

Green

5

Pink

4

Grey

3

Yellow

2

Blue

1

White

ide-rail circuit connector

Common
VH Raise
VH Lower
KS Lower

KS Raise
HS Raise

HS Lower

1512_206.wmf

There is continuity.
Yes No

⇓⇒Perform the tests in steps 10 and 11 then

return to step 7 for the other side-rail.

8. Printed circuit test:

Using an ohm-meter, test the electrical continuity
of the different tracks of the printed circuit, using
the available terminals.

There is continuity.

Yes No

⇓⇒Replace the defective printed circuit and

go to "Function Checks" on page 2-3.

9. Contact your National Hill-Rom representative,
refer to the last page of this manual.

10. Touchpad test:

Open the defective touchpad. Unplug the
connector in the side-rail and test the continuity
in the touchpad using an ohm-meter, between the
common terminal (brown) and the terminals
corresponding to the defective function (see figure
below, no colours on the touchpad). Carry this
out while pressing the control corresponding to
the defective function.

7

Polarizing
notches

Brown

6

Green

5

Pink

4

Grey

3

Yellow

2

Blue

1

White

ide-rail circuit connector

Common

VH Raise
VH Lower
KS Lower

KS Raise
HS Raise

HS Lower

1512_206.wmf

There is continuity.
Yes No

⇓⇒Change the defective touchpad and go

to "Function Checks" on page 2-3.

11. Side-rail cable test:

On the printed circuit, unplug the connector
corresponding to the side-rail being tested. Test
the electrical continuity of the cable between the
terminals corresponding to the faulty function in
the low, middle and high positions of the side-rail
(refer to Appendix 1, page 2-4).

7

Polarizing
notches

Brown

6

Green

5

Pink

4

Grey

3

Yellow

2

Blue

1

White

ide-rail circuit connector

Common

VH Raise
VH Lower
KS Lower

KS Raise
HS Raise

HS Lower

1512_206.wmf

There is continuity.
Yes No

⇓⇒Replace the side-rail cable. If this solves

the problem, go to "Function Checks" on
page 2-3.

12. The problem is not related to a side-rail. Contact
your National Hill-ROM representative, refer to
the last page of this manual.

2- 18 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

S

g

Rev. 001

Troubleshooting Procedures

2.15 Troubleshooting for Variable
Height pedal

Note: Pedals are optional or an accessory.

Unplug the bed from power supply.

1. Disconnect connector 1 from the power unit

(connection: refer to Appendix 2, page 2-4). Test
the electrical continuity between terminal 8
(common) and the terminal of the faulty function
on the round male 8-pin plug using an ohm-meter,
while pressing the corresponding pedal. Test both
pedals.

Function

VH Lower 2

VH Raise 4

Common 8

There is continuity.

Yes No

⇓⇒Go to step 3.

2. The problem does not come from the pedals.

Contact your National Hill-ROM representative,
refer to the last page of this manual.

3. Open the chassis junction box and disconnect

the pedal connector. Use an ohm-meter to test
the continuity between terminal 1 and the terminal
of the faulty function of the HE14 connector (see
figure below) by pressing on the side of the
corresponding pedal. Test both pedals.

hieldin

7

6

5

1

8

2

3

4

1512_203.wmf

8-pin round male

connector

1512Atbl_205

Brown

Green

Brown

L=1120

1
2
3
4
5
6
7

Pink

Brown

Brown

L=785

Pink

Green

Pink

Brown

1512_207.wmf

COMMON-BROWN

VH LOWER - PINK

VH RAISE - GREEN

RIGHT PEDAL

LEFT PEDAL

Green

There is continuity.
Yes No

⇓⇒Replace the pedal assembly (cable +

switch assembly) and go to ”Function
Checks” on page 2-3.

4. The problem does not come from the pedals.
Contact your National Hill-ROM representative,
refer to the last page of this manual.

2

Evolution LI156Ex Bed from Hill-Rom 2- 19

Technical Manual

Troubleshooting Procedures

C

A HILLENBRAND INDUSTRY

Rev. 001

B) Simplified general troubleshooting method for the LI156Ex

2

Use of this method assumes access to the
following parts kit:

- a three-function remote control, ref.:
QD0534

- one lock-out stopper. There is no reference
number for this, but it can be made easily.
On a QD0563 cable, cut the cable 10cm
from the connector, strip the grey, violet,
white, blue and brown wires and solder them
together. The other wires must be removed
(cut at source). Caution: disregarding this
precaution may cause the power unit to fail
when connecting to it. Protect the wires with
insulating tape.

- A Trendelenburg shunt connector, ref.:
LTZ1379.

1234567

Polarizing notches

Trendelenburg EOT shunt

1512_204.wmf

This method consists of:

- a front view of the power unit CB09.

- a table showing the connections of the
various elements to the power unit: table A.

- a table specifying the meaning and the

probable solution for basic faults: table B.

- The troubleshooting method as such,
comprising:

- The operating mode before diagnosis

- Step 1

- Step 2

Abbreviations used in steps 1 and 2:

- VH: Variable Height

- HS: Head Section

- KS: Knee Section

- EOT: End Of Travel

PROCEDURE:

When an operating fault has been noticed, consult
table B to see if the symptoms found are described
there. If this is the case, follow the instructions given
in the diagnosis column. If this is not the case, go to
the troubleshooting method: steps 1 and 2. In any
case, if the problem cannot be identified, refer to the
"detailed troubleshooting method", pages 2-2 to
2-19. For the connections to the power unit, refer to
the front view of the unit and table A.

FRONT VIEW OF THE UNIT

ontrol” input

Batte ry

Power supply

C o n trol in pu t 1 2 3 4

Right and left-hand
touc hpads + hand
pendant control unit
(optional)

T-cable VH motor HS motor KS motor

“

123

Earth terminal

Table A:

4

1512_208.wmf

1512Atbl_206

2- 20 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

y

Rev. 001

Troubleshooting Procedures

Table B:

BASIC FAULTS

FAULT FAULT D IAGNOSIS

Variable Height lowers without the touchpad

EOT assist

being pressed

Variable Height Raise is correct but not VH

Trendelenburg EOT

Lower

CB09 beeps each time one of the switches is

Battery is flat

pressed if the power unit only has battery power

1512Atbl_207

TROUBLESHOOTING METHOD

In order to best troubleshoot a defective bed, follow the operating mode before diagnosis, then use the
Step 1 and Step 2 tables.

The Step 2 table should only be used if the defect is still present after changing the CB09 power unit.

OPERATING MODE BEFORE DIAGNOSIS

* Set the lock-out switches to the "unlocked" position (allows all movements).
* Check that the mains supply is present (according to the country). Note: the green LED of the power
supply is an indication, but it may be blown).
* Check that the wires of the lock-out switches are properly connected to the switches.
* Check that the cables are in good condition (no cut or pinched cables).
* Check that the CB09 power unit connectors are properly connected.
* Unplug the bed for 3 seconds then plug it in again.
* Carry out the movements with the righthand and lefthand touchpad in both the up and down directions
to test the operational functions.

2

CASE A

NO MOVEMENT is possible

Disconnect the battery

FUNCTIONS

CHANGE THE
BATTERY

DOES NOT
FUNCTION

CHANGE THE

C

B

9 UNIT

O

Step 1

CASE B

AT LEA S T ONE M O VEMEN T is possible

Disconnect the faulty motor and replace it
by another without attaching it

FUNCTIONS

CHANGE THE
MOTOR

Perform the batter
charge test
to con firm

CHANGE THE

C

B

DOES NOT
FUNCTION

9

0

1512_209.wmf

1512Atbl_208

UNIT

Evolution LI156Ex Bed from Hill-Rom 2- 21

Technical Manual

2

2- 22 Evolution LI156Ex Bed from Hill-Rom

*

Disconnect the Trend. switch I/O from the chassis junction box

TRENDELENBURG

* Fit the Trendelenburg EOT shunt

FUNCTIONS

CHANGE THE

SW ITCH I/O

* Disconnect the battery

(only if the procedure began with case B step 1)

FUNCTIONS

CHANGE THE

BATTERY

NO

NO

STEP

Troubleshooting Procedures

2

* Open the junction box without reconnecting the VH pedal

* Test the side-rails one after the other, by disconnecting

CONNECT A NEW

TOUCHPAD TO THE

FAULTY SIDE-RAIL

FUNCTIONS NO

FIT THE NEW

TOUCHPAD

the connector of the opposite side-rail

FUNCTIONS

FUNCTIONS

FOLLOW

R.A.P. 2.16

* Disconnect the Control input

* Connect the Qd0534 remote control

NO

NO

Technical Manual

1512_210.wmf

* Disconnect the VH pedal from the junction box

(if VH pedal option is fitted)

FUNCTIONS

CHANGE THE

VH PEDAL

NO

FOLLOW R.A.P. 2.14

* Disconnect the T-cable from input 1

FUNCTIONS

CHANGE THE

LOCK-OUT SWITCH

AND/OR

T-CABLE

* Fit a lock-out plug at input 1

Contact your

National Hill-Rom

representative

NO

A HILLENBRAND INDUSTRY

Rev. 001

A HILLENBRAND INDUSTRY

Rev. 001

Section Contents

General cabling and positioning of

components - LI156Ex .............................. 3- 2

Schematic diagram for LI156Ex .................... 3- 3

3.1 Technical description .............................. 3- 4

3.1.1 Mechanics.......................................... 3- 4

3.1.2 Electrics: Theory of Operation ......... 3- 4

Theory of Operation

3. Theory of Operation

3

Evolution LI156Ex Bed from Hill-Rom 3- 1

Technical Manual

3

Theory of Operation

General cabling and positioning of components - LI156Ex

A HILLENBRAND INDUSTRY

Rev. 001

1512_300.tif

3- 2 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Schematic diagram for LI156Ex

r

r

e

e

s

H

H

i

w

a

V

V

o

R

L

7

7

n
w
o

r

n
e

B

e

)

r

n

G

o
m

R
H

m
o

V

c

(

)
n
o

m

n

m

e

o

e

c

r

(

G

n
w

R

o

H

r

V

B

7

7

r

e

e

s

i

H

H

w

a

V

V

o

R

L

l
e
v
a

r

t

i

T

n

f

N
E
P
O

N

T
O
I

O
T

N

U

O

A

D

C

U

o
d

n
E

r
o

t

o

S

m

H

e

e

s

i

S

S

w

a

K

K

o

R

L

3

2

4

1

5

6

3

2

4

1

5

6

w

e
t

y

o

k

i

e

l

l

e

n

h

u

r

i

l

e

P

Y

W

G

B

L

L

L

R

R

H

S

S

S

S

V

K

H

K

H

w

e
t

o

y

i

e

k

l

l

e

h

u

n

l

r

i

e

B

Y

W

P

G

L

L

L

R

R

S

H

S

S

S

H

V

K

H

K

1

2

4

3

6

5

1

2

3

5

4

6

r

e

e

s

S

S

i

w

a

K

K

o

R

L

k
n

i
P

/

n
e

w

e
r

e

o

l

l

u

G

l

e

-

B

Y

/

/

e

O

y

t

i

e

N

r

h

-

G

W

T

-

­O

C

C

E

N

N

r

-

u

-

o

T

t

T

n

O

O

o

E

E

c
o

R

L

t

S

S

u
A

H

H

r

e

e

s

S

S

i

w

a

H

H

o

R

L

l

i
a

r

­e
d

l

i

o

s

r

t

d

n

n

o

a

c
h

t
h
g

i
R

e
m

a
r

f
d
e
B

l

i
a

r

­e
d

i
s

d
n
a
h

t

f
e
L

r

e

e

s

S

i

S

w

a

H

H

o

R

L

3
P

W

N

T

E

O

E

Y

W

IT

E

L

L

E

O

L

H

R

E

W

G

Y

Y
E
R
G

1

n
o

i

t

c
n
u

j

l
o

r

t
n
o
c

D

U

O
I

E

L

R

V

B

B

R

E

N

W

T

E

G

O

E

N

W

E

IT

L

L

A

D

O

U

L

H

O

R

E

L

R

I

E

W

R

B

B

O

V

Y

6

5

7

2

4

3

1
P

x
o
b

Theory of Operation

d
e

e

b

r
a

e

e
t

h

s

t

a

i

e

h

d

h

t

i

e

c

t

i

w

m

n

r

w

n

o

i

e

s

t

t

w

r

e

y

G

S

C
N

H

r

w

n

o

B

W

i

h

t

e

N
E
E
R
G

VIOLE

T

W

H

T

E

I

Y

E

W

O

L

L

2
P

ORANG

E

R

E

D

N
E
E
R
G

8

G
IN
D

L
IE
H
S

n
o

1

m
m

P

o
c
t
n
e

m
e
v
o

m
t
s

i

s
s
a
.

n

d

o

n

m

e
r

m

T

o
c

+

H

H

V

V

7

8

1

1

r
o

t
c
e
n
n
o

C

t

n

t

u

o

u

o

o

-

m

­k

k

m

c

c

t

t

o

o

l

o

u

u

l

c
t

u
o

­k
c
o
L

6

7

r

o

o

r

-

-

e

e

e

k

k

s

i

w

w

c

c

a

o

o

o

o

l

l

r

l

l

H

S

H

S

H

V

V

K

V

H

1

2

3

4

5

2

3

8

5

6

C
N

B

l

u

e

e

l

w

l

o

Y

C
N

o

i

V

e

t

l

4

)

l

y

a

r

n

V

e

t

o

4

t

i
t

2

a

p

B

o
(

3

t
u
o

h

-

c

S

t

k

i

K

c

w

o

S

L

H
V

2
P

s

n

i

o

s

i

x

t

s

o

c

a

b

n

h

u

j

C

4

3

2

1

:
e

ot

N

o

n

w

n

e

e

o

n

w

k

o

n

w

n

e

e

n

o

w

k

w

r

o

B

n

O
N

n

k

i

P

y

e

G

r

C
N

h

W

t

e

i

1
2
3

4
5

6
7

i

n

e

s

i

o

h

o

h

n

T

i

s

p
.
1

r

B

R

O
N

r

G

r

B

O
N

n

i

P

B

r

O
N

r

G

r

B

O
N

n

i

P

d
r

o
c
r
e

w
o
P

l

H

a

V

d
e
p
l

L

a

H

r

V

e

t
a

l

i
b
t
h
g

i
e

R
H

H

V

e

l
b
a

i

L

r

H

a

V

V

.
d
n

e
r

h

t

T

c

s

.

i

t

i

v

s

e

w

s

S

R

A

)

t

h
c

o

t

i

o

f
(

w
s

g
r

T

u

O

b
n

E

e

r

l

o

e

t

d

n

n

u

e
r

h

T

s

r
o

t
o

S

m

K

r
o

t
o

H

m

V

h

t
r

a
E

3

1512_301.wmf

Evolution LI156Ex Bed from Hill-Rom 3- 3

Technical Manual

Theory of Operation

A HILLENBRAND INDUSTRY

Rev. 001

3

3.1 Technical description

The operation of the Evolution LI156Ex bed can be
divided into 2 categories or sub-systems:

• Mechanics

• Electrics
The interaction between these sub-systems allows
all the operational functions to be used.

The electric functions are driven by low voltage
motors.

Each of the sub-systems will be described separately
in the following sections. The schematic diagrams are
located at the beginning of this section.

3.1.1 Mechanics

The mechanical sub-system consists of two
connected systems:

• Chassis - Bedframe

Trendelenburg/Reverse Trendelenburg

The Trendelenburg/Reverse Trendelenburg position
is a mechanical and electrical function assisted by a
gas spring. The operating principle is as follows:

The lift arms are linked by two notched sliding tubes.
They are unlocked when the control lever is operated,
thus allowing the bedframe in Trendelenburg or
Reverse Trendelenburg mode to be inclined at the
required position or maximum angle.

Trendelenburg accuracy: the maximum angle
depends on the height of the sleep surface. It can
only be obtained if this height is between 70 cm from
the ground and the maximum height.

The lowering of the bedframe in Trendelenburg is
stopped by a specific End-of-Travel (EOT) situated
the foot section of the chassis. This EOT cuts off the
Variable Height motor power, so that demands are
not made on the structure of the bed.

Reverse Trendelenburg accuracy: This position has
two types of operation:

- electric: when the height of the sleep surface is
between 64 cm from the ground and the high position.
When the bed is supplied from the mains or a battery
(optional) and the control lever is operated while gently
lifting the foot end, the sliding connection is released
and the Variable Height actuator drops as the Reverse
Trendelenburg microswitch closes. The headend of
the bedframe drops electrically until the Reverse
Trendelenburg control lever has been released, or
the maximum angle reached.

- mechanical: when the height of the sleep surface
is below 64 cm, the operation is the same as for the
Trendelenburg position. This operating phase
corresponds to the yellow area of the indicator on
the bed lift arm.

CPR release

When the CPR function situated under the corner at
either side of the head section is activated, it allows
the driving gear of the Head Section situated inside
the actuator to be disengaged. This allows the head
section to drop under the pull of gravity, assisted/
cushioned by a gas spring.

Construction of side-rails

The side-rails have a welded structure consisting of
upper frames, pivoting arms and assembly
connections. In this way they form a solid unit.

Head and foot boards

The head and footboards feature an injected/blow­moulded plastic structure with painted steel clasps
for assembly and decorative laminated panels.

Bedside Cabinet Transport

A bed featuring the “Bedside Cabinet Transport”
option comprises a mechanical welded chassis
without symmetrical headboard (SH) and an
intermediate mechanical welded structure integrating
the horizontal symmetrical headboard (HSH). At the
head of this HSH frame, the bedside cabinet support
consists of 2 plastic rails assembled with screws.

3.1.2 Electrics: Theory of Operation

The specifications of the bed are as follows:

Class I IPX4 type B

220V(-10%)-240V(+6%)

Voltages

Frequency 50-60Hz

Maximum power load/
Amperage

Refer to the schematic diagrams at the beginning of
the section for specific information relative to cabling.

The bed is operated with a CB09 power unit. This
unit controls the electrical functions of the bed:
Variable Height, Head Section and Knee Section with
autocontour.

These functions are performed by motors using very
low continuous security voltages.

or 110V-120V (+/-10%)
or 100V +/-10%
AC Voltages + Ground

320VA/1.25 A or 2.5A or

3.15A according to
country.

1512Atbl_300

3- 4 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Theory of Operation

Power unit characteristics

Class II IP54

220V(-10%)-240V(+6%)

Supply voltage

Frequency 50-60Hz

Fuse circuit-breaker on
primary

Maximum power load/
Amperage

Output voltage 24 to 45V DC

Output power 160VA

Intermitte nt ope ra tion 10% 6 min/hour

or 110V-120V (+/-10%)
or 100V +/-10%
AC Voltages + Ground

1.25A (version 220/240v)

2.5A (version 110/120v)

3.15A (version 100v)
320VA/1.25A or 2.5A or

3.15 A according to
country

1512Atbl_301

The CB09 unit comprises three sections:

1 - power stage

2 - functions controlled by relays

3 - battery charging circuit.

1 - Depending on the use of the bed, the power stage
is composed of a 230V/38VAC, 120V/38VAC or 100V/
38VAC transformer, protected at the input by 2 time
delay fuses of 1.25A, 2.5A or 3.15A depending on
configuration, followed at the output by a floating
power stage whose main component is an FET
transistor. At its input, this floating stage has rectifier
diodes and at its output, the filtering capacitor. It
supplies an output DC voltage adapted to the power
required. This voltage varies between 24V and
45VDC according to the functions activated.

A current limiting circuit also controls power supply
cut-off via a second FET transistor if the load lifted by
the bed is greater than 250kg.

2 - The relays are controlled by transistors. In order
to protect these relays from arcing during switching,
the second FET transistor checks the power cycle
when a function is activated, thus allowing the relays
to close with no voltage. In the same way, when a
function control is released, the FET transistor cuts
the power before the relay contact opens.

Autocontour: the unit controls the operation
of the bed in Autocontour mode (Head
Section and Knee Section) via the
intermediate End Of Travels of the Head
Section (external EOT fitted to the body of
the motor) and Knee Section (EOT internal
to the motor) motors.

3 - The bed can be fitted with a battery. This battery
is external to the power unit. The battery charging
circuit of the CB09 has current limiting according to
the level of the battery. Charging begins as soon as
the voltage is switched on and lasts 12 hours if the
battery is fully discharged (from the audible signal).

When the CB09 unit is not connected to the mains
supply, checking the voltage level enables a “low
battery power” audible signal to be set off by buzzer
when the voltage lies between 18V and 15V. This is
an audible beep that sounds when a switch is pressed.

The functions are activated by the side-rail controls
of the hand pendant control unit (accessory) or the
Variable Height pedal (optional or accessory) after
each function has been electrically unlocked.

Battery characteristics

Input/Output voltage 24 VDC

Cla s s II IP6 5

Maximum charging time 12 hours

Discharging ti me (storage ) 3 months

1512Atbl_302

This is a Lead Acid battery, comprising 2 components
of 12V, 1.2Ah connected to each other by a 10A fuse.

This battery model has no memory effect and can
thus be recharged regularly without any particular
constraints.

Explanation of the memory effect: some types of
batteries must be fully discharged before being
recharged. Disregarding this precaution significantly
reduces their lifetime.

Capacity of the battery after full charging (12 hours):
minimum of 4 complete VH, HS and KS raise lower
cycles with a safe working load on the bed
(170 kg), before the low battery alarm is given.

Motor characteristics

The motors have the following characteristics:

VH HS KS

Manufac t. LINAK LINAK LINA K

Reference LA31.40BM LA32.50F LA31.1

Cla s s II IP54 II IP6 5 II IP54

Power 144 W 100 W 65 W

Voltage

Intermi ttent
service

24 to 45 VDC24 to 45 VDC24 to 45 V

DC

10% max.

6 min./h

our

10% max.

our

6 min./h

10% max.

1 min./

hour

1512_tbl_303

3

Evolution LI156Ex Bed from Hill-Rom 3- 5

Technical Manual

Theory of Operation

A HILLENBRAND INDUSTRY

Rev. 001

3

The dimensions are as follows:

Variable Height

• 195mm (7.68") actuator travel

• 415mm (16.34") rod, retracted centre to centre

Head Section

• 190 mm (7.48") actuator travel

• 455 mm (17.91") rod, retracted centre to centre

Knee Section

• 60 mm (2.36") actuator travel

• 295 mm (11.61") rod, retracted centre to centre

The motors contain the internal upper and lower End
of Travels (for HS motor: the end of travel unit is
external, but fixed to the motor) that allow the power
unit to cut the power in these positions. For the
Trendelenburg position, an NC (Normally Closed) End
of Travel stops the sleep surface in its lower position
so that the bed chassis is not used. The problem does
not apply to Reverse Trandelenburg due to the design
of the chassis.

An NO (Normally Open) Reverse Trendelenburg
assist switch comes into operation when this function
is activated so as to lower the bed automatically.

Autocontour function: this function is carried out
by two intermediate end of travel switches that are
internal to the Knee Section and Head Section motors
(for HS motor: the end of travel unit is external, but
fixed to the motor). When the Head Section "Raise"
function is activated with the bed horizontal, the HS
and KS sections rise simultaneously until the internal
intermediate EOT switch of the KS motor cuts the
power at an angle of 16°. The HS motor still operates
until its upper EOT is reached or the control is
released. When the Head Section "lower" function is
activated and the corresponding section reaches an
angle of 22°, the intermediate EOT of the HS motor
controls the KS motor as the section lowers. If the
inclination of the HS is small to begin with, the KS will
lower immediately.

Note: Abbreviations: refer to Section 1.

Note: The guarantee will become null and void if any

electric part is opened.

Notes:

3- 6 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

4. Removal, Replacement and Adjustment Procedures

Section Contents

4.1) Side-rail touchpad replacement ........ 4- 3

Removal....................................................... 4- 3

Installation ................................................... 4- 4

4.2) Side-rail cable replacement ................ 4- 4

Removal....................................................... 4- 4

Installation ................................................... 4- 5

4.3) Intermediate side-rail cable

replacement .......................................... 4- 6

Removal....................................................... 4- 6

Installation ................................................... 4- 6

4.4) Power supply cable replacement ...... 4- 7

Removal....................................................... 4- 7

Installation ................................................... 4- 7

4.5) Power unit replacement ....................... 4- 8

Removal: specific procedure when bed is

stuck in low position. ............................. 4- 8

Removal: general procedure ................... 4- 9

Installation: general procedure ................ 4- 9

4.6) Lock-out switch replacement ............ 4- 10

Removal..................................................... 4- 10

Installation ................................................. 4- 10

4.7) Battery replacement .......................... 4- 10

Removal..................................................... 4- 10

Installation ................................................. 4- 11

4.8) Variable Height motor replacement 4- 11

Removal..................................................... 4- 11

Removal: specific procedure when bed is

stuck in low position and the covers
cannot be unscrewed and removed 4- 13

Installation: for all beds ............................ 4- 14

4.9) Head Section motor replacement.... 4- 15

Removal..................................................... 4- 15

Installation ................................................. 4- 16

4.10) Knee Section motor replacement .... 4- 17

Removal..................................................... 4- 17

Installation ................................................. 4- 18

Removal, Replacement and Adjustment Procedures

4.11) Trendelenburg End of Travel and Reverse
Trendelenburg assist switch assembly

replacement ........................................ 4- 18

Removal..................................................... 4- 18

Installation ................................................. 4- 19

4.12) Trendelenburg/Reverse Trendelenburg

cable replacement ............................ 4- 19

Removal..................................................... 4- 19

Installation ................................................. 4- 20

Adjustment ................................................ 4- 20

4.13) Trendelenburg/Reverse Trendelenburg

mechnism replacement ..................... 4- 21

Removal..................................................... 4- 21

Installation ................................................. 4- 23

4.14) Trendelenburg/Reverse Trendelenburg

assist gas spring replacement ........... 4- 24

Removal..................................................... 4- 24

Installation ................................................. 4- 25

4.15) Head Section assist gas spring

replacement ........................................ 4- 26

Removal..................................................... 4- 26

Installation ................................................. 4- 26

4.16) Head Section disable system

replacement ........................................ 4- 26

Removal..................................................... 4- 26

Installation ................................................. 4- 27

Adjustment ................................................ 4- 27

4.17) Castor, Steer/Brake castor

replacement ........................................ 4- 28

Removal..................................................... 4- 28

Installation ................................................. 4- 29

Adjustment of brakes: single and double

band castors. ....................................... 4- 29

Adjustment of brake and steer

castors................................................... 4- 30

4.18) Head and footboard replacement .. 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 31

4

Evolution LI156Ex Bed from Hill-Rom 4- 1

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4.19) Footboard linen holder replacement 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 31

4.20) Headend side-rail replacement........ 4- 31

Removal..................................................... 4- 31

Installation ................................................. 4- 32

4.21) Footend side-rail replacement .......... 4- 32

Removal..................................................... 4- 32

Installation: general procedure .............. 4- 32

4.22) Mechanical Leg Section cable

replacement ........................................ 4- 33

Removal..................................................... 4- 33

Installation ................................................. 4- 33

Adjustment ................................................ 4- 34

4.23) Mechanical Leg Section

replacement ........................................ 4- 34

Removal..................................................... 4- 34

Installation ................................................. 4- 35

Adjustment ................................................ 4- 35

4.24) Extension replacement....................... 4- 36

Notes

4

Removal..................................................... 4- 36

Installation ................................................. 4- 37

4.25) Variable Height pedal replacement 4- 37

Removal..................................................... 4- 37

Removal of Variable Height pedal electric

wiring ..................................................... 4- 38

Installation of pedal electric wiring ........ 4- 39

4.26) Bedside Cabinet support rails

replacement ........................................ 4- 40

Removal..................................................... 4- 40

Installation ................................................. 4- 40

4- 2 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

4.1) Side-rail touchpad
replacement

Tools required: 1 small flat blade screwdriver

1 med. Phillips head screwdriver
1 x 3mm Allen key
1 mallet

Removal, Replacement and Adjustment Procedures

Removal

1. Apply the brakes, adjust the bed to its high
position, then put the Head Section in the
horizontal position and the relevant side-rail to

high position.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Use the small flat blade screwdriver and the
mallet to pierce the centre, remove and throw
away the three caps (A) of the side-rail bar then
the four touchpad caps (B) (see figure 1).

A

Figure 2 1512A401.tif

5. Unscrew the four screws (D) of the touchpad
using the medium Phillips head screwdriver
(see figure 3).

D

Figure 3 1512A402.tif

6. Open out the touchpad and remove the
adhesive waterproof sleeving (E) from the
connector (see figure 4).

C

4

E

Figure 1 1512A400.tif

B

4. Unscrew the three screws of the bar using the
3mm Allen key and remove the bar by lifting it
up at the headend of the bed (C)
(see figure 2).

7. Disconnect the touchpad and remove it from
the bed while keeping the intermediate
connector attached to the cable.

Figure 4 1512A403.tif

Evolution LI156Ex Bed from Hill-Rom 4- 3

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

Installation

1. Perform the removal procedure in reverse
order, replacing the adhesive waterproof
sleeving, being careful not to damage the cable
and positioning the touchpad unit correctly on
the side-rail guide marks.

2. Replace the seven used caps.

3. Perform the "Function Checks" on page 2-3 of
this manual.

4.2) Side-rail cable replacement

Tools required: 1 mallet

1 med. Phillips head screwdriver
1 small flat blade screwdriver
1 x 3mm Allen key
1 wire tie cutter
1 electrician's knife
1 tube of medical grease
1 small cross-section rigid electric

wire (1.4m).

1 Seritech: ref: OUZ001

(supplier: Nicom, ref :T050-101-

01) touchpad connector clip

Removal

1. Adjust the bed to its high position, the Head
Section and the Knee Section to the low
position, then remove the bedframe's hard
surfaces.

2. Raise the side-rails.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

4. With the medium Phillips head screwdriver,
unscrew the two screws securing the plastic
cover of the relevant side-rail arm and remove
it.

5. With the small flat blade screwdriver and the
mallet, pierce the centre, remove and throw
away the 4 caps of the side-rail bars then the
four touchpad caps.

6. Position the Head Section using the CPR
control.

7. Unscrew the 4 screws of the bars with the 3mm
Allen key and remove them by first lifting the
longest bar where it joins the other.

8. Unscrew the four screws of the touchpad with
the medium Phillips head screwdriver and open
out the touchpad.

9. Cut the cable wiring harness at the connector,
and recover the touchpad unit.

10. Remove the adhesive waterproof sleeving from
the connectors.

4- 4 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

S

Rev. 001

Removal, Replacement and Adjustment Procedures

11. Recover the intermediate connector.

12. Tie the wire at the end of the cut cable. The
cable can also be stripped and spliced directly
to the wires.

13. Slide the cable so that it comes out with the
first wire at the end of the side-rail at P
(see figure 1)

Note: the end of the wire must come out at
the touchpad at R (see figure 1).

R

P

Figure 1 1512A404.tif

14. Remove the cable from the upper articulation
of the side-rail, on the inner side of the bed
(at S, see figure 2).

S

T

Figure 2 1512A405.tif

15. Disconnect the wire and leave it inside the
side-rail.

16. Pull out the cable from the lower articulation of
the side-rail (at T, see figure 2).

17. Pull out the cable from the junction box inlet,
located in the middle section of the bedframe,
and the plastic conduit.

Note: medical grease is used to run the cables
when they are being fitted.

18. With the wire tie cutter, cut the wire ties that
hold the cable at the inlet of the junction box.

19. With the 3mm Allen key, unscrew the two
screws that secure the junction box to the
bedframe and separate the junction box from
the bedframe crossbar (see figure 3). Recover
the washers.

Hand

Side-rails

pendant

20. Push the cables out from the junction box, and
remove the printed circuit.

21.Unplug the connector of the cable to be replaced
from the printed circuit.

Installation

Note: this procedure uses the side-rail cable

replacement kit listed in Section 5.

1. Fit the connector equipped with the new cable
to the printed circuit at C1, C2 or C3
(depending on availability) (see figure 4).

Figure 4 1512A406.tif

2. Perform steps 21 to 16 of the removal
procedure in reverse order, respecting the
position of the cables in the junction box
(see figure 3).

3. With the electrician's knife, strip the end of the
cable to 5cm.

4. Attach the side-rail cable wires to the guide
wire at S (see figure 2).

5. Slide the cable into the side-rail until it comes
out at R (see figure 1), and remove the guide
wire.

6. With the touchpad connector clip, connect the
cable wires to the kit connector making sure
that the colours are correctly matched
(see figure 5).

Polarizing
notches

ide-rail circuit connector

7. Perform steps 11 to 1 of the removal procedure
in reverse order by replacing the adhesive
waterproof sleeving. Be careful not to damage
the cable and position the touchpad unit with
respect to the side-rail guides.

8. Replace the seven used caps.

9. Perform the "Function Checks" on page 2-3 of
this manual.

7

Brown

6

Green

5

Pink

4

Grey

3

Yellow

2

Blue

1

White

Common

VH Raise
VH Lower
KS Lower
KS Raise
HS Raise
HS Lower

Figure 5 1512_206.tif

4

Power unit

link

Motor EOT

Figure 3 1512A407.tif

Evolution LI156Ex Bed from Hill-Rom 4- 5

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

4.3) Intermediate side-rail cable
replacement

This concerns the cable between the power
unit and the bedframe junction box.

Tools required: 1 small flat blade screwdriver

1 x 3mm Allen key
1 wire tie cutter
1 electrician's knife
1 tube of medical grease
1 Seritech: ref: OUZ001
(supplier: Nicom, ref :T050-101-01)
touchpad connector clip

Removal

1. Apply the brakes, adjust the bed to its high
position if possible, then adjust the Head
Section and Knee Section to the horizontal
position and remove the hard surfaces of the
bedframe.

2. Put the side-rails in the high position.

3. Unplug the bed from its power supply. If the bed
has a battery, put the lock-out switches to their
"locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is switched
on. Technical staff may be injured if
the bed is not disconnected from its
power supply.

4. With the 3mm Allen key, unscrew the two
screws securing the junction box to the
bedframe and separate the junction box from
the bedframe crossbar (see figure 1). Recover
the washers.

Hand

pendant

Power unit

link

Side-rails

Motor EOT

7. With the small flat blade screwdriver, open out
the bedframe cable track that runs the cable
up to the split conduit.

8. With the wire tie cutter, cut both the ties
securing the intermediate and Knee Section
motor cables to the bedframe crossbar.

9. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed.

10. Remove the headend cover and place the
footend cover on its side.

11. With the small flat blade screwdriver, unlock
and remove the catch of the cables connected
to the power unit.

12. Unplug the intermediate cable connector from
the power unit, input (C) (see figure 3).

Figure 3 1512A200.tif

13. Cut the wire ties securing the intermediate
cable on the chassis.

14. With the 3mm Allen key, unscrew both the
clamps securing the split conduit.

15. Remove the intermediate cable from the
conduit. Note that the conduit groove must be
oriented towards the headend section of the
bed.

Installation

1. Perform the removal procedure in reverse
order.

2. Perform the "Function Checks" on page 2-3 of
this manual.

Figure 1 1512A407.tif

5. Push the cables out from the junction box and
remove the printed circuit.

6. Unplug the connector of the cable to be
replaced from the printed circuit: marking C4
(see figure 2).

Figure 2 1512A406.tif

4- 6 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

4.4) Power supply cable
replacement

Important: only the power supply cable listed
in Section 5 may be installed on the LI156Ex
bed. Other cables may reduce the safety and
compliance of the bed.

Tools required: 1 short Phillips head screwdriver

1 small flat blade screwdriver
1 x 3mm Allen key

Removal, Replacement and Adjustment Procedures

Figure 2 1512A409.tif

Removal

1. Apply the brakes and adjust the bed to its high
position.

2. Adjust the Head Section to high position.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

4. With the 3mm Allen key, remove the three
screws (A) securing the headend cover of the
bed (see figure 1). Recover the washers.

A

Installation

1. Perform the removal procedure in reverse
order.

Note: the earth terminal of the mains plug is
located in the middle of the plug, and must be
facing downwards when fitting the cable.

An audible "click" should also be heard when
locking the plug into the power unit.

2. Perform the "Function Checks" on page 2-3 of
this manual.

4

B

Figure 1 1512A408.tif

5. Remove the headend cover B (figure 1).

6. With the short Phillips head screwdriver,
remove the two screws securing the power
cable strain relief system under the chassis.

7. With the small flat blade screwdriver, unlock
and remove the mains plug of the power unit.
Do this by pushing in the pins above and
below the power unit (see figure 2) and pull
out the connector while tilting it in the opposite
direction to the screwdriver.

Evolution LI156Ex Bed from Hill-Rom 4- 7

Technical Manual

4

Removal, Replacement and Adjustment Procedures

4.5) Power unit replacement

Tools required: 1 small flat blade screwdriver

1 x 3mm Allen key
1 x 7mm open end wrench

Removal: Specific procedure when
bed is stuck in low position.

a. Lay the Head Section and Knee Section flat,

and remove the hard surfaces from the
bedframe.

b. Raise the side-rails.
c. Unplug the bed from its power supply. If the bed

has a battery, put the lock-out switches to their
"locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is switched
on. Technical staff may be injured if
the bed is not disconnected from its
power supply.

d. Turn the lefthand castors of the bed inwards

(taking the lefthand side to be when lying on
the bed) and apply the brakes.

e. After laying a protective sheet on the floor, turn

the bed onto its lefthand side.

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

Note: this procedure can be carried out with
the bed on its castors, but is not very easy.

f. With the small flat blade screwdriver, unlock

then unplug the mains plug from the power
unit by pressing the locking pin under the
connection (small opening provided). Note:
the upper pin is not accessible, but the plug
can still be unplugged.

g. With the small flat blade screwdriver, unlock

and remove the catch holding the connectors
to the power unit.

h. Unplug all the connectors B, C,1 and 2 of the

power unit (see figure 1).

A HILLENBRAND INDUSTRY

Figure 1 1512A200.tif

i. With the 7mm open end wrench, free the

ground wire of the power unit.

j. Position the replacement unit, without fixing it,

so that the four removed connectors can be
plugged in. Make sure the positions are
correct (see table 1).

LI156Ex BED

S MAINS POWER CABLE
B
CCONTROL

1

2
3

4

k. Plug the bed into its power source again, or

put the lock-out switches to the “unlocked”
position (padlock open) if the bed has a battery.

l. Operate the Variable Height Motor function to

bring the bed to its mid-position at least.
Note: support the bed during this movement
so as not to damage the bedframe or chassis.

m. Unplug the bed from its power source again. If

the bed has a battery, put the lock-out switches
to their "locked out" position (padlock closed).

n. Disconnect the replacement power unit.

o. Lift the bed up onto the castors.

BATTERY

T-CABLE: LOCK-OUT,
VARIABLE HEIGHT PEDAL,
Tr./Rev.Tr. I/O SWITCHES
VARIABLE HEIGHT MOTOR
HEAD SECTION MOTOR
KNEE SECTION MOTOR

Table 1

Rev. 001

1512_tbl_200

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

p. Continue the standard procedure from step 3

(following page).

4- 8 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

Removal: general procedure

1. Apply the brakes, then adjust the sleep
surface and the Head Section to the high
position. Remove the bedframe hard
surfaces, then raise the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. With the 3mm Allen key, unscrew and remove
the three screws securing the headend cover
of the bed. Recover the washers.

4. Remove the headend cover of the bed.

5. With the small flat blade screwdriver, unlock
and remove the mains plug of the power unit.
Do this by pushing in the pins above and
below the power unit (see figure 2) and pull
out the connector while tilting it in the opposite
direction to the screwdriver.

Installation: general procedure

1. Perform the removal procedure in reverse
order.

2. Perform the "Function Checks" on page 2-3 of
this manual.

Figure 2 1512A409.tif

6. With the small flat blade screwdriver, remove
the catch holding the connectors to the power
unit.

7. Remove all the power unit connectors.

8. With the 7mm open end wrench, remove the
screw fixing the ground wire to the power unit
and free the wire.

9. With the 3mm Allen key, remove the 2 screws
fixing the power unit to the chassis while
supporting it and then remove the unit from
the bed. Recover the two screws and washers.

4

Evolution LI156Ex Bed from Hill-Rom 4- 9

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

4.6) Lock-out switch
replacement

Tools required: 1 x 3mm Allen key

1 wire tie cutter
1 needle nosed pliers

Removal

1. Apply the brakes, adjust the bed to its high
position, then raise the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. With the 3mm Allen key, unscrew and remove
the three screws securing the footend cover
of the bed. Recover the screws and washers.

4. Pull the footend cover and tip it carefully onto
the side of the bed.

5. If necessary, use the the wire tie cutter to cut
the tie securing the lock-out cable to the
chassis so as to free the cable.

6. With the needle nosed pliers, unplug the
connectors of the switch to be replaced.

7. Manually press both catches of the faulty
switch and remove it from its housing.

4.7) Battery replacement

Tools required: 1 small flat blade screwdriver

1 x 3mm Allen key
1 x 8mm open end wrench
1 wire tie cutter

Removal

1. Apply the brakes, adjust the bed to its high
position, then raise the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers.

4. Remove the headend cover of the bed.

5. Tilt the footend cover of the bed onto its side.

6. With the small flat blade screwdriver, unlock
and remove the catch securing the connectors
to the power unit.

7. Unplug the battery connector B (see figure 1).

Installation

1. Perform the removal procedure in reverse
order, ensuring that the switch position
corresponds to the "locked out" (padlock
closed) and "unlocked" (padlock open)
functions. Ensure that the wires are properly
connected per function (see table 1), and
replace the used wire tie if necessary.

snoitcnuFsruoloceriW

thgieHelbairaVwolleydnateloiV

noitceSdaeHnworbdnayerG

noitceSeenKlBetihwdnaeu

Table 1

2. Perform the "Function Checks" on page 2-3 of
this manual.

8. With the wire tie cutter, cut the wire ties
securing the battery cable to the other cables
and the chassis up to the power unit.

9. With the 3mm Allen key and the 8mm open
end wrench, unscrew and remove the four

004_lbt_2151

screws securing the battery to its supports.

10. Remove the battery.

Figure 1 1512A200.tif

4- 10 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

Installation

1. Perform the removal procedure in reverse
order, replacing the wire ties and the four
battery attachment nuts (lock nuts).

2. Perform the "Function Checks" on page 2-3 of
this manual.

4.8) Variable Height motor
replacement

Tools required: 1 small flat blade screwdriver

1 x 3mm Allen key
1 x 13mm open end wrench
1 wire tie cutter
1 multigrip pliers
1 mallet
1 x 8 or 10 mm diameter pin-punch
1 torque wrench
1 x 3m sling with ratchet

Removal

1. Adjust the Head Section and Knee Section of
the bed to the low position. If possible, raise
the bedframe to the intermediate position, then
remove the bedframe's hard surfaces.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Raise the side-rails.

4. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers

5. Remove the headend cover of the bed.

6. Tip the footend cover of the bed on its side as
far as possible.

7. With the small flat blade screwdriver, remove
the catch securing the various connectors
connected to the power unit.

8. With the wire tie cutter, cut the wire ties
securing the different cables to the chassis up
to the power unit.

9. Unplug connector 2 from the power unit
(see figure 1) and separate the relevant cable.

4

Evolution LI156Ex Bed from Hill-Rom 4- 11

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

Bedframe

Sling

Chassis

4

Figure 1 1512A200.tif

10. With the 13mm open end wrench, unblock
both the nuts (A) securing the motor support
assembly (B) (see figure 2).

A

B

Figure 2 1512A410.tif

11. Beds with Trendlenburg/Reverse
Trendelenburg only: if the bedframe is not in
the intermediate position: with the 3mm Allen
key, unscrew both screws securing the
Reverse Trendelenburg assist switch (located
near the VH motor body) and free the switch.
Recover both metal spacers.

12. Turn the castors on the righthand side of the
bed inwards toward the chassis (the viewpoint
of a patient lying on the bed must be used),
and apply the brakes.

13. Tip the bed onto its righthand side.

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

14. Beds with Trendlenburg/Reverse
Trendelenburg only: With the sling, attach the
bedframe securely to the chassis to prevent
the bed from opening out when the Variable
Height motor is removed (see figure 3).

Figure 3 1512_411.wmf

WARNING

The strap must be attached securely.
Failure to do so could result in
personal injury.

15. Remove both Truarc circlips from the pin at
the end of the motor rod.

Note: the Truarc circlip next to the pin with two
grooves is always placed on the inside groove.

16. Remove pin (C) located at the end of the
motor rod (see figure 4). You can use the
mallet and the pin-punch, or the multigrip pliers.

D

Figure 4 1512A412.tif

17. Recover both pin guide shouldered bushes
(C).

18. With a small flat blade screwdriver, remove
the upper Truac circlip of the pin (D) supporting
the motor (see figure 4).

19. Remove the pin (D) while supporting the motor
(see figure 4).

20. Remove the motor.

21. With the 13mm open end wrench, remove
both nuts (A) fixing the motor support assembly
(B) and extract this assembly from the motor
(see figure 2).

C

4- 12 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

Removal: Specific procedure when

bed is stuck in low position and
the covers cannot be unscrewed
and removed

a. Adjust the Head Section and Knee Section of

the bed to the low position and remove the
hard surfaces from the bedframe.

b. Raise the side-rails.

c. Unplug the bed from its power supply. If the

bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

d. Turn the castors on the righthand side of the

bed inwards toward the chassis (the viewpoint
of a patient lying on the bed must be used),
and apply the brakes.

LI156Ex beds with Trendelenburg/Reverse

e.

Trendelenburg only: Operate the Trend./Rev.
Trend. lever of the bed so that the bed attains
maximum Reverse Trendelenburg even if the
tilt is not large, since this decompresses the
Trendelenburg/Reverse Trendelenburg assist
gas spring.

f. With the 3mm Allen key, unscrew and remove

the four screws securing the headend and
footend covers of the bed. Recover the
washers.

g. After placing a protective cover on the ground,

tip the bed onto its righthand side.

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

h. Beds with Trendelenburg/Reverse Trendelenburg

only: with the sling, securely attach the
bedframe to the chassis in the middle of the
bed, while applying pressure, to prevent the
bed from opening when the Variable Height
motor is uncoupled (see figure 5).

Note: the sling compensates for the forces on
the VH motor pins.

Bedframe

Sling

Chassis

WARNING

The strap must be attached securely.
Failure to do so could result in
personal injury.

i. Remove both the Truarc circlips from the pin

located at the end of the motor rod.

Note: the Truarc circlip next to the pin with two
grooves is always placed on the inside groove.

j. With the mallet and the pin-punch or the

multigrip pliers, remove the pin at the end of
the motor.

k. Recover both shouldered bushes from the

motor end supports.

LI156Ex beds with Trendelenburg/Reverse

l.

Trendelenburg only: without removing the sling,
operate the Trendlenburg lever of the bed so
that the bedframe is parallel to the chassis.

LI156Ex beds with Trendelenburg/Reverse

m.

Trendelenburg only: manually move the
bedframe apart from the chassis to access to
the screws of the headend cover.

n. Remove the headend cover of the bed.

o. Tip the footend cover of the bed on its side as

far as possible.

p. With the small flat blade screwdriver, remove

the catch securing the connectors to the power
unit.

q. With the wire tie cutter, cut the wire ties

securing the various cables of the chassis up
to the power unit.

r. Unplug connector 2 from the power unit

(see figure 1).

s. With the 13mm open end wrench, partially

loosen both the nuts of the motor support
assembly (B) (see figure 2).

t. Remove one of the Truac circlips from the pin

supporting the motor body.

u. Remove the pin (D) attaching the motor body

while supporting the motor body
(see figure 4).

v. Remove the motor and leave the sling in place.

w. Fully unscrew the nuts securing the motor

assembly (B) (see figure 2) and remove the
assembly from the motor.

4

Figure 5 1512_411.wmf

Evolution LI156Ex Bed from Hill-Rom 4- 13

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

Installation: for all beds

1. Install the motor support assembly (B) (see
figure 2) on the new motor, and replace the
locknuts (A) without tightening them.

2. Insert the base of the new motor into the
correct position in the bedframe (see figure 4)
and insert the pin (D) into its slot.

3. Fit the second Truarc circlip to the pin (D) (see
figure 4).

4. Plug the connector of the new motor into input
2 of the power unit without attaching the cable
(see figure 1).

5. Set the lock-out switch of the Variable Height
function to the “unlocked” position (padlock
open).

6. Switch on the power supply of the bed, but not
if the bed is equipped with a battery.

7. Adjust the bed to a small Reverse
Trendelenburg position, but not if the bed is
blocked in the low position.

8. Press the Variable Height raise buttons on
one of the side-rails to bring the tip of the
motor rod to the two arms on the bedframe.

9. Fit the two shouldered bushes to the end of
the two arms.

10. Fit pin (C) (see figure 4). The raise and lower
buttons of the Variable Height function can be
used to make installation easier.

Note: the end of the pin with two grooves
must point inwards to the chassis.

11. Fit the Truarc circlips at the end of the pin (C)
(see figure 4). For the end with two grooves, fit
the Truarc circlip on the inside groove.

12. Beds with Trendelenburg/Reverse
Trendelenburg: remove the sling.

13. Stand the bed back on its wheels.

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

14. With the 3mm Allen key, replace the Reverse
Trendelenburg assist switch if it has been
removed. Do not forget the metal spacers.

15. If the bed is not in the high position, do this by
pressing the Variable Height raise button on
one of the side-rails.

16. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

17. Unplug the new Variable Height motor from
the power unit.

18. Perform steps 11 to 1 of the removal procedure
in reverse order replacing the used cable ties.
Make sure that the headend and footend cover
slots are correctly positioned on the chassis.

Note: both of the locknuts (A) (see figure 2)
must be tightened to a torque of 7Nm with the
torque wrench.

19. Perform the "Function Checks" on page 2-3 of
this manual.

4- 14 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

4.9) Head Section motor replacement

Tools required: 1 med. Phillips head screwdriver

1 medium flat blade screwdriver
1 small flat blade screwdriver
1 x 3mm Allen key
1 x 4mm Allen key
1 wire tie cutter

Removal

Arrangement:

1512A413.tif

1. Apply the brakes, adjust the bed to its high
position, the Knee Section and if possible the
Head Section flat (use the CPR release if
necessary), then remove the bedframe's hard
surfaces.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Raise the side-rails.

4. With the 3mm Allen key unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers.

5. Remove the headend cover of the bed.

6. Tilt the footend cover of the bed onto its side.

7. With the small flat blade screwdriver remove
catch securing the connectors to the power
unit.

8. With the wire tie cutter, cut the wire ties
securing the various cables to the chassis
between the power unit and the split conduit.

9. Unplug connector 3 from the power unit
(see figure 1).

Removal, Replacement and Adjustment Procedures

Figure 1 1512A200.tif

10. With the wire tie cutter, cut the wire tie securing
the Head Section motor at the outlet of the
split conduit (A) (see figure 2).

A

Figure 2 1512A414.tif

11. With the 3mm Allen key, unscrew the four
screws securing the jumpers of the split
conduit.

12. Remove the Head Section motor cable from
the split conduit. Note that when subsequently
reassembling the conduit, the conduit slot is
turned upwards to the head of the bed. This is
to prevent any noise when the bed is
functioning.

13. Operate the lever on the Head Section CPR
release and adjust the Section to the high
position if possible.

14. With the 3mm Allen key, unscrew the screws
securing the bedframe junction box, located
under the Head Section crossbar of the bed.
Recover the washers. Note the position of the
cables (see figure 3).

Hand

pendant

Power unit

link

Figure 3 1512A407.tif

15. Remove the printed circuit from the junction
box then cut the wire tie securing the cable to
the end of travel unit to the side-rail cables,
using the wire tie cutter (see figure 4).

Side-rails

Motor EOT

4

Evolution LI156Ex Bed from Hill-Rom 4- 15

Technical Manual

4

Removal, Replacement and Adjustment Procedures

Figure 4 1512A415.tif

16. Disconnect the end of travel unit from the
printed circuit: connected at C5 (see figure 5).

Figure 5 1512A406.tif

17. Lower the side-rails.

18. Remove the Truarc circlips (B) from the pin
located at the end of the motor rod next to the
actuator, and recover the plastic spacer (H)
(see figure 6).

B

H

E

G

F

A HILLENBRAND INDUSTRY

Rev. 001

20. Operate the lever on the Head Section CPR
release and adjust the Section to low position
if possible.

21. Unclip and remove the latch blocking the
disabling adjustment clevis (C) on the drawbar
(D) (see figure 6). Note down, but do not
change the clevis adjustment.

22. Remove pin (E) while supporting the motor
and recover the shouldered bushes (F) and
the spacer (G) (see figure 6). Note that the rail
operating the end of travels is driven by
pin (E).

WARNING

If for any reason the Head Section
cannot be laid flat, it must be

supported when removing the motor
from its housing. Disregarding this
precaution may result in crush injuries.

23. Remove one of the Truarc clips from the pin at
the base of the motor.

24. Remove the pin (I) (see figure 6) while
supporting the motor.

25. Remove the motor while lifting and moving it
on the side so as not to damage the release
drawbar.

WARNING

Note: the end of travel unit of the
motor must not be dismantled.

Disregarding this precaution can
prematurely wear down the internal gears
and may cause injuries.

26. Remove the motor drawbar.

Note: the release trigger plate is integral to the
motor.

C

D

Figure 6 1512A416.tif

19. Move the actuator in order to free the motor
end pin.

I

WARNING

If for any reason the Head Section

Installation

1. Perform the removal procedures in reverse
order, replacing the used wire ties. Ensure
that the slots of the headend and footend
covers are correctly positioned in the relevant
sockets on the chassis.

2. Perform the "Function Checks" on page 2-3 of
this manual.

cannot be adjusted to its high

position, care must be taken when
freeing the actuator because it is under
constant pressure. Failure to do so could
result in personal injury.

4- 16 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

4.10) Knee Section motor replacement

Tools required: 1 small flat blade screwdriver

1 x 3mm Allen key
1 wire tie cutter

Removal

1. Apply the brakes, adjust the bed to its high
position, the Head Section and, if possible,
the Knee Section flat then remove the
bedframe's hard surfaces.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Adjust the side-rails to intermediate position.

4. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers.

5. Remove the headend cover of the bed.

6. Tilt the footend cover of the bed onto its side.

7. With the small flat blade screwdriver, unlock
and remove the latch securing the connectors
to the power unit.

8. With the wire tie cutter, cut the wire ties
securing the various cables to the chassis
between the power unit and the split conduit
(A) (see figure 1).

A

Figure 1 1512A414.tif

9. Unplug connector No. 4 of the power unit
(see figure 2).

Removal, Replacement and Adjustment Procedures

Figure 2 1512A200.tif

10. With the 3mm Allen key, unscrew the four
screws securing the jumpers of the split
conduit.

11. Remove the Knee Section motor cable from
the split conduit.

12. With the wire tie cutter, cut the two ties securing
the motor cable to the bedframe crossbar.

13. Remove one of the Truarc circlips from the pin
(B) of the motor (see figure 3).

D
B

Figure 3 1512A417.tif

14. Remove the pin (B) of the motor while
supporting the motor and if necessary the Leg
Section of the bedframe (see figure 3).

C

WARNING

If for any reason the Leg Section
cannot be laid flat, it must be

supported when removing the motor
from its housing. Disrespecting this
precaution may result in crush injuries.

15. Recover both shouldered bushes from the pin
(B) (see figure 3).

16. Rest the Knee section on the bedframe if
necessary.

17. Remove one of the Truac circlips from the pin
(C) securing the motor body (see figure 3).

18. Remove pin (C) while supporting the motor,
then remove the motor.

4

Evolution LI156Ex Bed from Hill-Rom 4- 17

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

Installation

CAUTION

The Knee Section motor is set in-factory
and the actuator rod must be maintained

at 90°. The initial setting is indicated with
an elastic specifying the initial alignment of the two
clevises.

Disrespecting this precaution may reduce the
performance of the bed and damage the motor.

1. Insert the base of the new motor on the
bedframe, ensuring that it is correctly
positioned and insert the pin (C) into its housing
(see figure 3).

2. Fit the second Truarc circlip on the pin (C).

3. Fit the connector of the new motor to input 4
(see figure 2) of the power unit without
attaching the cable.

4. Plug the bed into the mains supply. If the bed
has a battery, set the lock-out switches to the
“unlocked” position (padlock open).

5. Press the Knee Section lower button on one
of the side-rails to bring the tip of the motor rod
to the two mounts (D) on the bedframe
(see figure 3).

6. Install the two shouldered bushes on the
mounts (D) (see figure 3), then the pin (B).

7. Fit the second Truarc circlip on the pin (B).

8. Switch off the bed's power supply. If the bed
has a battery, put the lock-out switches to their
"locked out" position (padlock closed).

9. Unplug the connector of the new Knee Sec­tion motor from the power unit.

10. Secure the motor cable to the bedframe
cross-bar with two cable ties. Leave a small
length of the cable free between the motor
and the split conduit so that there is no trac­tion on the cable when the motor moves.

Note: the conduit slot must always be directed
to the top end of the bed to prevent noise
when the bed is functioning.

11. Perform steps 11 to 1 of the removal procedure
in reverse order, replacing the used cable ties.
Make sure that the headend and footend cover
slots are correctly positioned in the places
provided on the chassis.

12. Perform the "Function Checks" on page 2-3 of
this manual.

4.11) Trendelenburg End of Travel
and Reverse Trendelenburg
assist switch assembly
replacement

Tools required: 1 x 3mm Allen key

1 wire tie cutter

Removal

1. Apply the brakes, then adjust the bed to its
high position and raise the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. With the 3mm Allen key, unscrew the four
screws securing the headend and footend
covers of the bed. Recover the washers

4. Remove the headend cover of the bed.

5. Tilt the footend cover of the bed onto its side .

6. With the 3mm Allen key, unscrew both screws
securing the chassis junction box (A)
(see figure 1).

B

C

A

Figure 1 1512A418.tif

7. Note the position of the cables (see figure 2),
then remove the printed circuit from the junction
box.

4- 18 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Figure 2 1512A419.tif

8. Unplug the C1, C2 or C3 connector
corresponding to the end of travel unit
(see figure 3).

Figure 3 1512A406.tif

9. Cut the wire ties securing the end of travel unit
cables to the chassis.

10. With the 3mm Allen key, unscrew the
hexagon socket-type screws securing the
Reverse Trendelenburg assist switch (B) and
the Trendelenburg end of travel (C) to the
chassis (see figure 1).

11. Slightly raise the Trendelenburg end of travel
support and remove it from the housing.

12. Recover the four metal spacers.

Installation

1. Perform the removal procedure in reverse
order, replacing the used cable ties.

Note: the Trendelenburg end of travel is a
switch that is normally closed, whereas the
Reverse Trendelenburg assist switch is a
normally open switch.

2. Perform the "Function Checks" on page 2-3 of
this manual.

Removal, Replacement and Adjustment Procedures

4.12) Trendelenburg/Reverse
Trendelenburg cable
replacement

Tools required: 1 x 3mm Allen key

1 x 10mm open end wrench
1 x 17mm open end wrench
1 multigrip pliers
1 med. Phillips head screwdriver
1 small flat blade screwdriver

Removal

1. Apply the brakes, then adjust the bed to its
high position, and if possible horizontally.

2. Set the Head Section and Knee Section flat
and the side-rails to high position. If the bed is
fitted with an extension, put it in the extended
position.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

4. Remove the bedframe hard surfaces.

5. With the 17mm open end wrench, loosen the
Nylstop locking nut of the cable at the Trend./
Rev. Trendelenburg control lever.

Note: the cable runs through the hole provided
in the lever between the two plastic spacers
so as to return towards the inside of the bed.

6. Operate the Trend./Rev. Trendelenburg lever
to free the cable.

7. With the 10mm open end wrench and the
multigrip pliers, loosen and remove the plastic
bush (A) screwed onto the adjusting device
(B) on the Trend./Rev. Trend. lever support.
Remove the sleeve (D) from the support (E)
(see figure 1).

4

B

C

A

Figure 1 1512A420.tif

D

E

Evolution LI156Ex Bed from Hill-Rom 4- 19

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

8. With the 3mm Allen key, unscrew and remove
the screw securing the sleeving strap from
under the crossbar of the bedframe footend
and recover the strap.

9. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed.

10. Remove the headend cover of the bed.

11. Tilt the footend cover of the bed onto its side .

12. With the 3mm Allen key unscrew, the four
screws securing the split conduit.

13. Remove the Trendelenburg/Reverse
Trendelenburg cable sleeving from the split
conduit. Note that when subsequently installing
the conduit, the conduit slot is turned towards
the headend of the bed to prevent any noise
when the bed is functioning.

14. Remove the sleeving from the release frame
(F) (see figure 2).

F

H

G

Figure 2 1512A421.tif

H

15. With the med. Phillips head screwdriver,
unscrew the screw securing the release frame
and pull the frame to withdraw it from its
housing.

16. Remove the cable of the Trendelenburg/
Reverse Trendelenburg mechanism from
beneath the mechanism.

The cable must exit via one of the locking
catches. If the position of the mechanism
prevents this, press the release plate (G) (see

I

Figure 3 1512A422.tif

figure 2) located inside the Trendelenburg/
Reverse Trendelenburg mechanism using the
small flat blade screwdriver. To do this, insert
the screwdriver into the opening (I) (see figure

3) of the mechanism between the two catches
to the right of the release (H) (see figure 3)
and slide the mechanism by lowering or raising
one end of the bedframe until the end of the
cable can be seen.

Note: two people are required to carry out this
operation.

Installation

1. Perform steps 16 to 7 of the removal procedure
in reverse order, replacing the Nylstop locknut
then perform the “Adjustment” procedure of
the following section from step 3.

2. Perform the "Function Checks" on page 2-3 of
this manual.

Adjustment

1. Ensure that the bed is in the high position.

2. With the 17mm open end wrench, loosen the
Nylstop locknut locking the cable at the
Trendelenburg/Reverse Trendelenburg control
lever.

3. Operate the Trendelenburg/Reverse
Trendelenburg lever to decompress the cable.

4. Fully tighten the adjustment screw (C) on the
adjuster device (B) of the Trendelenburg/
Reverse Trendelenburg cable sleeving (see
figure 1).

5. Run the cable through the hole provided on
the control lever between the two plastic
spacers (I) (se figure 5) then manually pull the
cable so that it is taut.

6. While maintaining the traction on the cable
(caution: the spring within the mechanism must
not be compressed), direct the tip of the cable
towards the inside of the bed, then tighten the
Nylstop locknut (H) using the 17mm open end
wrench and leaving 3mm between the end of
the screw and the threaded bar (see figure 5).

H

3 mm

Figure 5 1512A423.wmf

Lever

end

I

4- 20 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

If the plastic spacers are worn down (l), you
can adjust the tightness or replace the spacers.

Note: the Trendelenburg/Reverse
Trendelenburg interlock, located under the bed,
must slightly overshoot the mechanism when
the control lever is not activated.

7. If any noises are heard when the notches are
passed, the cable tension must be adjusted.
The adjuster (B) must be used in this case
(see figure 1). To do this, loosen the plastic
bush (A) screwed into the adjuster and tighten
the adjustment screw (C) (see figure 1) to
position the cable correctly.

4.13) Trendelenburg/Reverse
Trendelenburg mechanism
replacement

Note: there is no reference for the full
mechanism. This procedure allows you to
remove the mechanism completely with a view
to replacing any defective parts.

Tools required: 1 small flat blade screwdriver

1 medium flat blade screwdriver
1 med. Phillips head screwdriver
1 x 10mm open end wrench
1 x 13mm open end wrench
1 x 17mm open end wrench
1 x 3mm Allen key
1 multigrip pliers
1 4mm pin-punch
1 hammer

Removal

1. Adjust the Head Section and Knee Section of
the bed to the low position and the bed to high
position, then remove the bedframe's hard
surfaces.

WARNING

The bed must be in high position to
carry out the rest of the procedure.
Failure to do so could result in

personal injury.

2. With the 3mm Allen key, unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers.

3. Remove the headend cover of the bed.

4. Leave the footend of the bed free.

5. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

There is a risk of crush injury if the
battery is not unplugged from its
power source when the
Trendelenburg/Reverse

Trendelenburg mechanism is being

repaired or serviced.

6. Raise the side-rails.

7. With the 17mm open end wrench, loosen the
Nylstop locknut on the cable at the
Trendelenburg/Reverse Trendelenburg control
lever.

4

Evolution LI156Ex Bed from Hill-Rom 4- 21

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

Note: the cable runs through the hole provided
in the lever between the two plastic spacers
and is folded so as to return towards the inside
of the bed.

8. Operate the Trendelenburg/Reverse
Trendelenburg lever to free the cable.

9. With the 10mm open end wrench and the
multigrip pliers, loosen and remove the plastic
bush screwed onto the adjuster located on the
Trendelenburg/Reverse Trendelenburg lever
support. Next, remove the “adjuster + sleeving”
assembly of the lever and extension lever
support.

10. With the 3mm Allen key, unscrew and remove
the screw securing the sleeving strap under
the crossbar of the bedframe footend, and
recover the strap.

11. With the 3mm Allen key, unscrew the four
screws securing the jumpers of the split
conduit.

12. Remove the Trendelenburg/Reverse
Trendelenburg cable sleeving from the split
conduit. Note that when subsequently
reassembling, the conduit slot is turned to the
foot of the bed to prevent any noise when the
bed is functioning.

13. Turn the lefthand castors of the bed inwards
(the viewpoint of a patient lying on the bed is
used), and apply the brakes.

14. Tilt the bed onto its lefthand side.

WARNING

Two people are required to carry out
this operation. Disregarding this
precaution may result in injuries.

15. Free the Trendelenburg/Reverse
Trendelenburg assist gas spring. To do this,
slightly raise the gas spring end locking clip
(B) with the small flat blade screwdriver (see
figure 1) without removing it and raise the gas
spring rod by using the mallet handle.

WARNING

The gas spring is always partially
under pressure and the rod may

suddenly extend by 2cm. Never place
your hands in the axis of the gas spring.
Failure to do so could result in personal
injury.

16. Remove both Truarc circlips from the pin (A)
at the end of the Trendelenburg/Reverse
Trendelenburg mechanism (see figure 2).

17. With the multigrip pliers, remove the end pin
at A (see figure 2) and recover the relevant
shouldered bushes.

C

Figure 2 1512A425.tif

18. Remove both Truarc circlips from the pin (C)
at the base of the Trendelenburg/Reverse
Trendelenburg mechanism (see figure 2). Note
that the circlips are fitted to the outer grooves
of the pin.

19. With the multigrip pliers, remove the pin (C)
(see figure 2), remove the Trendelenburg/
Reverse Trendelenburg mechanism and
recover the shouldered bushes on the mounts.
Continue the procedure on a workbench.

20. With the medium Phillips head screwdriver,
unscrew the screw securing the release frame
(F) (see figure 3) and pull on the frame to
remove it from the housing.

B

A

B

Figure 1 1512A424.tif

4- 22 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

E

K

D

H

J

Figure 3 1512A421.tif

21. Remove the sleeving from the release frame.

22. Remove the Trendelenburg/Reverse
Trendelenburg mechanism cable from
underneath the mechanism (see figure 4). The
cable must exit through one of the position
lock notches. If the position of the mechanism
does not permit this, press the release plate
(H) (see figure 3) inside the Trendelenburg/
Reverse Trendelenburg mechanism using the
small flat blade screwdriver. To do this, insert
the screwdriver into the opening (O)
(see figure 4) two notches to the right of the
release (D) (see figure 3) and move the tube
(E) (see figure 3) to the right or left until the
end of the cable can be seen.

Note: Two people are required to carry out this
operation.

F

G

I

Removal, Replacement and Adjustment Procedures

a pair of flat pliers to make assembly easier. It
is positioned between the release plate and
the spring and is centred on the release (D).

24. Remove the release (D) from above the sliding
tube (G) (see figure 3).

25. Remove the tube (E) from the slide tube (G)
(see figure 3).

26. From the actual position of the spring (J),
opposite the opening (P) (see figure 4), tilt the
tube (E) or use a medium flat blade screwdriver
to recover the release plate (H) and the spring
(J) (see figure 5).

Note: when worn down, the spring becomes
conical. It should be replaced if this is the case.

J

H

Figure 5 1512A427.tif

27. With the medium Phillips head screwdriver,
unscrew and remove the four screws securing
the pads (I) of the sliding tube (G)
(see figure 3).

28. Remove the pads (I) from the sliding tube (G)
(see figure 3).

Installation

4

1. Perform steps 28 to 20 of the removal

P

O

23. With the 4mm pin-punch and the hammer,
knock out the pin (K) from the release (D)
(see figure 3) via the opening (P)
(see figure 4). A piece of wood can be placed
under the mechanism.

Note: the end of the pin is slightly crushed using

G

Figure 4 1512A426.tif

procedure in reverse order. The mechanism
must have already been set to maximum
Trendelenburg/Reverse Trendelenburg
position with the release in mid-position
(see figure 6).

B

C

Figure 6 1512A428.tif

A

Evolution LI156Ex Bed from Hill-Rom 4- 23

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

2. Fit both the shouldered bushes at (C)
(see figure 6).

3. Position the Trendelenburg/Reverse
Trendelenburg mechanism at (C) and fit the
corresponding pin.

4. Fit the Truarc ciclips of the pin at (C). Note that
the pins are fitted on the outer grooves of the
pin.

5. Fix the end of the assist gas spring at (B)
(see figure 6) on the Trendelenburg/Reverse
Trendelenburg mechanism. To do this, slightly
raise but do not completely withdraw the
securing clip of the assist gas spring by using
the small flat blade screwdriver and press the
head of the gas spring rod.

Note: the securing clip must be fitted and its
position correct: in full contact with the gas
spring head and within the relevant groove.

6. Fit both the shouldered bushes on the two
mounts (A) (see figure 6).

7. Push the Trendelenburg/Reverse
Trendelenburg mechanism to bring it to the
level of the mounts at (A) (see figure 6) and fit
the corresponding pin.

Note: it may be necessary to adjust the
separation of the bedframe and chassis by
hand to be able to position the pin. Moreover,
a certain amount of force is required to counter
the pressure of the assist gas spring.

8. Fit the corresponding Truarc circlips. Note that
these circlips are fitted on the outer grooves of
the pin.

9. Perform steps 14 to 7 of the removal procedure
in reverse order (without tightening the cable)
then adjust the cable as in procedure 4.12.

Finally, remember to correctly position the
notches of the headend and footend covers in
their proper positions on the chassis.

10. Perform the "Function Checks" on page 2-3 of
this manual.

4.14) Trendelenburg/Reverse
Trendelenburg assist gas
spring replacement

Tools required: 1 small flat blade screwdriver

1 x 13mm open end wrench
1 wire tie cutter

1 multigrip pliers

Removal

1. Adjust the Head Section and Knee Section of
the bed to the low position and the bed to the
high position, then remove the bedframe's hard
surfaces.

WARNING

The bed must be in high position to
carry out the rest of the procedure.
Failure to do so could result in
personal injury.

2. Set the bedframe the maximum Trendelenburg/
Reverse Trendelenburg position using the
Trendelenburg/Reverse Trendelenburg lever.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

There is a risk of crush injury if the
battery is not unplugged from its
power source when the

Trendelenburg/Reverse
Trendelenburg mechanism is being
repaired or serviced.

4. Raise the side-rails.

5. Turn the lefthand castors of the bed inwards
(the viewpoint of a patient lying on the bed
must be used), and apply the brakes.

6. Tilt the bed onto its lefthand side.

WARNING

Two people are required to carry out
this operation. Failure to do so could
result in personal injury.

7. Free the Trendelenburg/Reverse
Trendelenburg assist gas spring. To do this,
slightly raise the gas spring end securing clip
(B) with the small flat blade screwdriver (see
figure 1) without removing it and move apart
the gas spring rod by using the mallet handle.

4- 24 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

A

Figure 1 1512A424.tif

WARNING

The gas spring is always partially
under pressure and the rod may

suddenly extend by 2cm. Never place
your hands in the axis of the gas spring.
Failure to do so could result in personal injury.

8. With the 13mm open end wrench, unscrew and
remove the screw securing the base of the gas
spring to the chassis.

9. Remove the gas spring.

Installation

1. Remove both Truarc circlips of the pin (B) at the
end of the Trendelenburg/Reverse
Trendelenburg mechanism (see figure 2). Note
that the circlips are fitted on the outer grooves
of the pin.

B

Removal, Replacement and Adjustment Procedures

C

B

Figure 3 1512A428.tif

Note: the securing clip must be fitted and its
position correct: in full contact with the gas
spring head and within the relevant groove.

6. Fit both shouldered bushes onto the mounts
at (B) (see figure 3).

7. Push the Trendelenburg/Reverse
Trendelenburg mechanism to bring it to the
level of the mounts at (B) (see figure 2) and
fit the corresponding pin.

Note: it may be necessary to adjust the
separation of the bedframe and chassis by
hand to be able to position the pin. Moreover,
a certain amount of force is required to
counter the pressure of the assist gas spring.

8. Fit the corresponding Truarc circlips. Note
that the circlips are fitted on the outer grooves
of the pin.

9. Perform steps 6 to 3 of the removal procedure
in reverse order.

Note: remember to correctly position the
notches of the headend and footend covers
in their proper positions on the chassis.

10. Perform the "Function Checks" on page 2-3 of
this manual.

4

Figure 2 1512A429.tif

2. With the multigrip pliers, remove the pin (B)
(see figure 2).

3. Pull on the Trendelenburg/Reverse
Trendelenburg mechanism to remove it from
the housing.

4. Recover the two shouldered bushes of the pin
housing (B) (see figure 2).

5. Fix the end of the assist gas spring at (C) (see
figure 3) on the Trendelenburg/Reverse
Trendelenburg mechanism. To do this, slightly
raise the assist gas spring securing clip by using
the small flat blade screwdriver (see figure 3)
without removing it and press the head of the
gas spring rod and release the securing clip.

Evolution LI156Ex Bed from Hill-Rom 4- 25

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

4.15) Head Section assist gas
spring replacement

Tools required: 1 multigrip pliers

1 adjustable wrench

Removal

1. Adjust the bed to its high position.

2. Adjust the Head Section to high position and
lower the side-rails.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

4. Remove the bedframe hard surfaces.

5. Remove both of the Truarc circlips securing
the gas spring.

6. Remove the gas spring from its housing,
beginning with the Head Section end.

7. Holding the gas spring rod with the multigrip
pliers, unscrew the gas spring plate (end) and
remove it from the rod. The adjustable wrench
can be used to unscrew the plate with less
trouble.

Installation

1. Fit the plate to the rod of the new gas spring
and tighten it with the multigrip pliers and
adjustable wrench.

2. Fit the new gas spring to the bed, beginning
with the base of the gas spring.

3. Perform steps 5 to 1 of the removal procedure
in reverse order.

4. Perform the "Function Checks" on page 2-3 of
this manual.

4.16) Head Section disable
system replacement

Note: the Head Section disable cable is
common to both release levers.

Tools required: 1 x 3mm Allen key

1 wire tie cutter
1 multigrip pliers
1 needle nosed pliers
1 x 100mm ruler.

Removal

1. Adjust the bed to its high position, then apply
the brakes.

2. Adjust the Head Section to high position and
lower the side-rails.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

4. Remove the bedframe hard surfaces.

5. Unclip and remove the catch clip securing the
drawbar of the disabling mechanism.

6. Unscrew the nuts of the two adjusters under
the bedframe.

7. Remove the two adjusters from the square
bracket under the bedframe.

8. With the wire tie cutter, cut the plastic tie
securing the cable sleeving on the Head
Section and bedframe. Note that the sleeving
is also fixed to the side-rail electric cables.

9. Remove the support notch sleeving (A) under
the bedframe (see figure 1). To do this, it is
also necessary to remove the conduit
protecting the side-rail cables.

A

Figure 1 1512A430.tif

10. With the 3mm Allen key, slightly unscrew the
two locking screws (B) of the cable sleeving at
the disabling levers (see figure 2).

4- 26 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

B

Figure 2 1512A431.tif

11. Remove the sleeving ends from the disabling
lever supports.

12. Remove the cable ends from the disabling
levers.

13. Remove the two sleeves of the side-rail
bracket.

14. Remove the cable and sleeving assembly.

Installation

1. Insert the sleeving of the new cable into the
side-rail supports.

2. Insert the two ends of the cables into the
places provided on the disabling levers.

3. Insert the ends of the sleeves into the disabling
lever supports.

4. With the 3mm Allen key, screw in the two
cable sleeve locking screws on the two
disabling levers.

5. Insert the two adjusters into the square bracket
under the bedframe.

6. With the needle nosed pliers and multigrip
pliers, screw the nuts of the two adjusters
under bedframe (see figure 3).

Note: the cable tension is not adjusted by these
adjusters.

Adjuster

Sleeving

Support
bracket

Removal, Replacement and Adjustment Procedures

Adjustment

Note: The cable tension is adjusted from the
clevis on the disabling drawbar, and not from
the adjusters under the bedframe.

1. Check that the adjusters are positioned
correctly with respect to the square bracket.
They should touch the square bracket (see
figure 3). If necessary, adjust them using the
multigrip pliers and the needle nosed pliers.

2. Unclip and remove the catch clip securing the
disable drawbar.

3. Tighten or loosen the disabling drawbar clevis
to leave a space of 5mm +/- 1mm (see fig. 4).

5 mm ± 1 mm

Drawbar

Clevis

Note: The essence of this adjustment is to
ensure that the motor disable system, activated
by the drawbar, completely retracts when the
Head Section disabling lever is released, taking
into account that the motor moves slightly when
in use.

4. Bring the clevis cable closer, possibly by
operating the manual disable function.

5. Replace and clip on the catch clip securing
the cable to the disabling drawbar.

Threaded section

Figure 4 1512_433.wmf

4

Cable

Adjustment screw

Figure 3 1512_432.wmf

8. Replace the used plastic cable tie.

9. Adjust the cable tension by following the
instructions of the “Adjustment” section below,
from step 3.

10. Perform the "Function Checks" on page 2-3 of
this manual.

Evolution LI156Ex Bed from Hill-Rom 4- 27

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4.17) Castor, Steer/Brake castor
replacement

Several types of castor are fitted to the Evolution
bed with different markings:

Model Marking

Single wheel Dia. 150 castor,
uncovered, steering brake

Single wheel Dia. 150 castor,
uncovered, brake:

Beige twin wheel Dia. 150
and integral single wheel,
steering brake:

Beige twin wheel Dia. 150
and integral single wheel,
brake:

:

Beige antistatic dia. 150,
single and twin wheel, brake,
brake + steering:

Two rivets on the

castor body.

No marki ng

Black bushing on

the upper part of
the castor.

Colourless
bushing on the
upper part of the
castor.

Yellow dot on the

side.

3. Apply the brakes.

WARNING

Disregarding this precaution may
result in injuries.

4. Raise the side of the bed with the castor to be
changed and place a 30cm high block under
the chassis, being careful not to rest the
chassis on the brake bar.

WARNING

Two people are required to lift the
bed. Failure to do so could result in
personal injury.

5. With the 3mm Allen key, unscrew the four
screws securing the headend and footend
covers of the bed. Recover the washers.

6. Remove the headend cover of the bed if the
castor to be changed is at the headend of the
bed.

7. Tilt the footend cover of the bed onto its side if
the castor to be changed is at the footend of
the bed.

8. With the Phillips head screwdriver, unscrew
the screw (A) securing the castor hood
(see figure 1).

4

Beige antistatic dia. 150,
single and twin wheel, brake:

Tools required: 1 small Phillips head screwdriver

1 med. Phillips head screwdriver
1 hammer
1 x 8 or 10mm dia. pin-punch.
1 x 3mm Allen key
1 x 5mm Allen key
1 x 10mm Allen key

Yellow upper

cover.

1512Atbl_401

Removal

1. Adjust the bed to its high position and raise
the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

A

Figure 1 1512A434.tif

9. Remove the hood from the castor.

10. Repeat steps 8 and 9 for the castor hood
opposite the one to be replaced.

11. Next to the castor to be replaced, remove the
brake pin (E) and the plastic washer (F) of the
brake rod (G) then remove it from its housing
(see figure 2).

4- 28 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

E

F

D

G

Figure 2 1512A435.tif

12. If the castor to replace is on the righthand side
(the viewpoint of a patient lying on the bed
must be used): slide the hexagonal bar (D) to
free the castor. Use the hammer and
pin-punch to make the task easier.

If the castor to replace is on the lefthand side:
use the medium Phillips head screwdriver to
remove two screws securing the guide bracket
of the hexagonal brake bar.

13. Punch out the hexagonal bar from the castor
to be replaced (make sure its position is
correctly noted before replacing it).

14. With the 5mm Allen key, unscrew the two
screws securing the castor while supporting
the castor.

15. Remove the castor by sliding it downwards.

Installation

1. Insert the 10mm Allen key in place of the
hexagonal bar in the castor. Set the brakes on
the castor by turning the key 90° or 180°
according to the initial position.

Note: the castor has three positions:

- either two neutral positions and one braked
position.

- or one steer position, then neutral followed
by brake.

2. Remove the 10mm Allen key from the new
castor and fit the castor into its housing.

3. Position the castor to ensure that the rotation
of the hexagonal bar in the castor properly
activates the neutral position.

WARNING

Disregarding this precaution may
cause the brake and steer system to
malfunction.

4. Slide the hexagonal bar into the castor.

Note: new castors are delivered with the
brakes already adjusted.

The adjustment procedure is not required in
normal circumstances when fitting a new castor
to the bed.

5. Perform the steps of the castor removal
procedure in reverse order.

Note: apply medium strength loctite to both
screws securing the castor, to ensure correct
locking.

6. Perform the "Function Checks" on page 2-3 of
this manual.

Adjustment of brakes: single and twin
wheel castors.

1. Adjust the bed to its high position and raise
the side-rails.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

3. Apply the brakes.

WARNING

Failure to do so could result in
personal injury.

4. Raise the side of the bed with the castor to be
changed and place a 30cm high block under
the chassis, being careful not to rest the
chassis on the brake bar.

WARNING

Two people are required to lift the
bed. Failure to do so could result in
personal injury.

5. With the 5mm Allen key, unscrew the two
screws securing the castor.

4

Evolution LI156Ex Bed from Hill-Rom 4- 29

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

Note: the brake is adjusted with the castor in
braked position, by the number of half-turns
made on the castor from the initial point of
contact between the tyre and its braking
system. The number of half-turns depends on
the type of castor.

6. Turn the body of the castor anticlockwise
(viewed from above) by successive half-turns
until the brake is no longer in contact with the
wheel.

CAUTION

Twin wheel castor: it is very important
not to continue turning the body of the

castor when the brakes are no longer in
contact.

7. Turn the body of the castor clockwise (viewed
from above) by successive half-turns until the
first point of contact between the tyre and the
brake system.

Note: twin wheel castor: if the body of this
castor is too loose, it may not be possible to
adjust it. In this case, unclip and remove the
upper cover (A) (see figure 4) with the small
flat blade screwdriver; apply adhesive tape to
(B) around the castor rod to block the two outer
parts. Unclip the lower cover (C) of the castor
with a screwdriver inserted into each side of
the castor between the wheels. Lift and remove
the castor cover. Using the multigrip pliers with
the brakes applied, press the two notched parts
of the castor together (see figure 4) while
turning the body of the castor clockwise
(viewed from above), until the brake begins to
touch the wheels. Next, fit the castor covers.

8. Next, turn the castor as follows:

- non antistatic single wheel castor: 4 half-
turns clockwise (viewed from above).

- antistatic single wheel castor: 3 half-turns
clockwise (viewed from above).

- antistatic and non antistatic twin wheel
castor: 3 half-turns clockwise (viewed from
above).

9. Position the two screws securing the castor
and tighten them with the 5mm Allen key.

Note: apply medium strength loctite to both
screws securing the castor, to ensure correct
locking.

10. Remove the block under the bed.

WARNING

Two persons are required to lift the
bed. Failure to do so could result in
personal injury.

11. Apply the brakes and check that the brakes
work efficiently by pushing the bed over a flat
surface using a force of 200 newtons. The bed
should not move.

Adjustment of the brake and steer
castor

There is no specific adjustment for the steering
system of the castors, only their position should
be checked when removing and installing.
Refer to the Refitting and Braking
adjustment sections of this procedure.

A

C

B

Figure 4 1512A436.tif

4- 30 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

4.18) Head and footboard
replacement

Tools required: no tools are required to perform

this action.

Removal

The head and footboards are not locked. Lift
them upwards to remove them from their
sockets.

Installation

Install the head or footboard by inserting the
two chrome-plated guides of the lower part of
each board into the slots provided on the
bedframe.

4.19) Footboard linen holder
replacement

Tools required: no tools are required to perform

this action.

Removal

1. If the board is horizontal, lift it so that it is
vertical and lower it vertically using the
guides.

2. Unlock the board manually by pulling the cords
of the two clips under the bedframe.

3. Raise the board vertically to remove it.

Installation

1. Perform the removal procedure in reverse
order.

2. Make sure the board is correctly fitted and
clipped and that it tips smoothly outwards
without becoming detached.

4.20) Headend side-rail
replacement

Tools required: 1 x 3mm Allen key

1 x 13mm open end wrench
1 wire tie cutter

Removal

1. Apply the brakes, then adjust the bed to its
high position, the Head Section to intermediate
position, and the Knee Section flat, then
remove the bedframe's hard surfaces.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Set the headend side-rails to low position.

4. With the 3mm Allen key, unscrew the two
screws securing the bedframe junction box
(fixed under the headend crossbar of the
bedframe). Recover the two washers.

5. Note the position of the cables (see figure 1),
then remove the printed circuit from the junction
box.

Hand

pendant

Power unit

link

Figure 1 1512A407.tif

6. Unplug the connector of the side-rail to be
removed (C1: lefthand side-rail or C2:
righthand side-rail) from the printed circuit (see
the marking under the circuit).

7. With the 3mm Allen key, loosen the screws
securing the square bracket that fixes the
plastic sleeving of the side-rail cable under the
bedframe, and free this sleeving.

8. With the wire tie cutter, cut the plastic cable tie
between the bedframe junction box and the
side-rail, including those on the side-rail guide,
while noting the position of the plastic conduit
of the cable.

Side-rails

Motor EOT

4

Evolution LI156Ex Bed from Hill-Rom 4- 31

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

9. Set the side-rail to the high position.

10. Remove the conduits from the support slots
(A) under the bedframe (see figure 2). To do
this, it is also necessary to remove the conduit
protecting the side-rail cables.

A

Figure 2 1512A430.tif

11. With the 13mm open end wrench, unscrew
both screws (B) securing the side-rail while
supporting the side-rail (see figure 3).

4.21) Footend side-rail
replacement

Tools required: 1 x 13mm open end wrench

Removal

1. Apply the brakes and set the side-rail to the
high position.

2. With the 13mm open end wrench, unscrew
the two screws securing the side-rail support,
while holding the side-rail.

3. Tilt the side-rail and its support inwards.

4. Remove the side-rail support and the two
guides from the bedframe.

5. Separate the side-rail from its support
(which remains on the bed) and recover the
two plastic spacers.

Installation: general procedure

1. Perform the removal procedure in reverse
order.

2. Perform the "Function Checks" on page 2-3 of
this manual.

4

B

Figure 3 1512A437.tif

12. Tilt the side-rail and its support inwards, without
forcing so as not to damage the CPR cable.

13. Remove the side-rail support and the two
guides from the bedframe.

14. Separate the side-rail from its support
(which remains on the bed) and recover the
two plastic spacers.

Installation

1. Perform the removal procedure in reverse
order, replacing the used cable ties.

Note: if the side-rail or the connector(s) must
be removed, refer to RAP 4.2 of this section.

2. Perform the "Function Checks" on page 2-3 of
this manual.

4- 32 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Pin di

Rev. 001

Removal, Replacement and Adjustment Procedures

4.22) Mechanical Leg Section
cable replacement

Note: The control cable of the mechanical Leg
Section is common to the two side levers.

Tools required: 1 x 3mm Allen key

1 x 4mm Allen key
1 small flat blade screwdriver
1 wire tie cutter
1 needle nosed pliers
1 x 4mm pin-punch
1 hammer

Removal

1. Adjust the bed to its high position, then apply
the brakes.

2. Lay the Leg and Foot Sections flat and put the
side-rails in mid-position.

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

4. Remove the bedframe hard surfaces.

5. With the 3mm Allen key, slightly unscrew the
locking screws securing the cable sleeving to
the Leg Section control levers. These screws
are located under the lever supports.

6. Remove the ends of the Leg Section lever
support sleeving.

7. Remove the ends of the disabling lever cables.
The operation is made easier by sliding the
sleeving in the side-rail supports.

8. With the wire tie cutter, cut the cable tie
securing the cable sleeving.

9. Remove the side-rail cable and sleeving
assembly.

10. Remove one of the Truarc circlips of the pin
from the end of the Leg Section mechanism
rod and remove the pin. Recover the spacers.

11. Remove one of the Truarc circlips of the pin
from the base of the Leg Section mechanism
and remove the pin while supporting the
mechanism. Recover the spacers.

12. Remove the Leg Section mechanism from the
bed and continue the procedure on a
workbench.

13. With the 4mm Allen key, unscrew but do not
remove the screw securing the sleeving stop
flat (see figure 1).

a. 4 mm

Sleeve

Sleeve stop flat

Figure 1 1512_438.wmf

14. With the 4mm pin-punch and the hammer,
remove the pin on the side of the Leg Section
sleeving.

15. With the small flat blade screwdriver and the
hammer, remove the socket from the
mechanism (see figure 1) and pull out the
assembly to access the catch.

16. With the needle nosed pliers, bend back the
end of the spring (A) (bent to prevent it from
springing out from its position) and remove it
from the catch (B) (see figure 2).

Figure 2 1512A439.tif

17. Remove the cable from the spring and pull the
cable and sleeving assembly from the Leg
Section sleeving.

Socket

A

B

Installation

1. Insert the new sleeving and cable assembly
into the sleeve in the opposite direction to
when it was removed, running the sleeving
over the stop flat.

2. With the small flat blade screwdriver, insert
the new cable into the loop of the release
spring.

3. Fix the spring (A) (see figure 2) to the catch
and bend the tip using the needle nosed pliers
to stop it from springing back from the housing.

4. Insert the socket + catch + spring assembly
into the Leg Section sleeve.

5. With the hammer, insert the pin into its
location in the Leg Section sleeve.

6. Position the Leg Section mechanism on the
bedframe and fit the pin and spacers located
on the socket.

7. Fit the Truarc circlips removed from the
previous pin.

4

Evolution LI156Ex Bed from Hill-Rom 4- 33

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

8. Position the end of the Leg Section mechanism
in its proper location and insert the
corresponding pin, remembering to fit the
spacers.

9. Fit the Truarc circlips removed from the
previous pin.

10. Run the two sleeves through the side-rail
supports.

11. Fix the ends of the cables to the Leg Section
control levers.

12. Fix the ends of the sleeves to the Leg Section
control lever supports.

13. Replace the used cable tie securing the
sleeving.

14. With the 3mm Allen key, screw in the sleeve
locking screws on the Leg Section control
levers.

15. Adjust the system, following the next section
from step 3.

16. Perform the "Function Checks" on page 2-3 of
this manual.

Adjustment

1. Check that the cable common to both Leg
Section controls is in good condition.

2. With the 4mm Allen key, loosen the screw
securing the sleeving stop flat (see figure 1 of
the removal procedure) and slacken the
sleeving.

3. Pull the sleeving/cable assembly from the Leg
Section sleeving until the Leg Section control
levers touch their support.

4. Once the levers touch the support, tighten
and block the sleeving stop screw using the
4mm Allen key.

CAUTION: there must be no pull on the release
spring when the stop screw is locked.

Note: a “click” must be heard when it passes
a notch, if the Leg Section is raised manually
from the low position without operating the
levers.

4.23) Mechanical Leg Section
replacement

Note: there is no reference for the complete
Leg Section. This procedure completely
removes the Section with a view to replacing
any defective parts.

Note: the control cable of the mechanical Leg
Section is common to both side levers.

Tools required: 1 x 3mm Allen key

1 x 4mm Allen key
1 small flat blade screwdriver
1 wire tie cutter
1 needle nosed pliers
1 x 4mm pin-punch
1 hammer

Removal

1. Adjust the bed to its high position, then apply
the brakes.

2. Lay the Leg and Foot Sections flat and put the
side-rails in mid-position.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

4. Remove the bedframe hard surfaces.

5. With the 3mm Allen key, slightly unscrew the
locking screws securing the cable sleeving to
the Leg Section control levers.

6. Remove the ends of the Leg Section lever
support sleeving.

7. Remove the ends of the Leg Section lever
cables. The operation is made easier by sliding
the sleeving in the side-rail supports.

8. With the wire tie cutter, cut the cable tie
securing the cable sleeving.

9. Remove the side-rail cable and sleeving
assembly.

10. Remove one of the Truarc circlips of the pin
from the end of the Leg Section mechanism
rod and remove the pin. Recover the spacers.

4- 34 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

11. Remove one of the Truarc circlips from the pin
at the base of the Leg Section mechanism
and remove the pin while supporting the
mechanism. Recover the spacers.

12. Remove the Leg Section mechanism from the
bed and continue the procedure on a
workbench.

13. With the 4mm Allen key, unscrew but do not
remove the screw securing the sleeving stop
flat (B) (see figure 1).

Note: the sleeving runs between the stop flat
(B) and the top of the slide (A) (see figure 1).

C

Removal, Replacement and Adjustment Procedures

D

E

F

G

H

Figure 3 1512A442.tif

A

B

Figure 1 1512A440.wmf

14. With the 4mm pin-punch and the hammer,
remove the pin (C) located on the side of the
Leg Section slide (A) (see figure 1).

15. With the small flat blade screwdriver and the
hammer, remove the slot (D) from the
mechanism (see figure 2) and pull the
assembly to access the catch. The spring (H)
decompresses when the slot (D) is removed
from the slide (A).

A

Figure 2 1512A441.tif

16. Note down the position of the catch (F) +
spring (H) assembly (see figure 3) then, with
the small flat blade screwdriver, drive out the
guide (E) securing the catch (F) + springs (G)
and (H) assembly (see figure 3) on the slot (D)
and remove the slot assembly.

Note the position of the spring (H) with respect
to the catch (F) (see figure 4).

D

D

H

F

H

Figure 4 1512A439.tif

17. With the needle nosed pliers, bend back the
tip of the spring (G) (see figure 3) (bent to
prevent the spring escaping from its housing)
and remove the spring from the catch.

18. With the small flat blade screwdrivers, separate
the spring (G) (see figure 3) from the lined
control cable.

Installation

1. Perform steps 18 to 5 of the removal procedure
in reverse order.

2. Perform the “Adjustment” procedure of the
following section from step 3.

3. Perform steps 4 to 1 of the removal procedure
in reverse order.

4. Perform the "Function Checks" on page 2-3 of
this manual.

Adjustment

4

1. Check that the cable common to both Leg
Section controls is in good condition.

2. With the 4mm Allen key, loosen the screw
securing the sleeving stop flat (see figure 1 of
the removal procedure) and slacken the
sleeving.

3. Pull the sleeving/cable assembly from the Leg
Section sleeving until the Leg Section control
levers touch their support.

Evolution LI156Ex Bed from Hill-Rom 4- 35

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

4. Once the levers touch the support, tighten
and block the sleeving stop screw using the
4mm Allen key.
CAUTION: there must be no pull on the release
spring when the stop screw is locked.

Note: if the Leg Section is raised manually from
the low position without operating the levers, a
“click” must be heard when it passes a notch.

4.24) Extension replacement

Tools required: 1 x 5mm Allen key

1 x 10mm open end wrench
1 x 17mm open end wrench
1 multigrip pliers
1 med. Phillips head screwdriver

Removal

1. Apply the brakes, then adjust the bed to its
high position, set the Leg and Foot Sections
flat and the side-rails to low position.

2. Put the extension in its stored position and the
Leg Section in high position.

3. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Technical staff may be injured if the
bed is not disconnected from its
power supply.

4. Remove the hard surfaces of the bedframe
footend.

5. With the medium Phillips head screwdriver,
unscrew and remove the screw connecting
the extension ground wire to the bedframe.

6. With the 17mm open end wrench, loosen the
screw securing the Trendelenburg/Reverse
Trendelenburg cable and free the cable by
operating the lever.

7. With the 10mm open end wrench and the
multigrip pliers, remove the plastic spacer of
the Trendelenburg/Reverse Trendelenburg
cable adjuster, then the adjuster + cable
sleeving assembly of the Trendelenburg/
Reverse Trendelenburg lever support, and free
the extension lever sleeving.

8. With the 5mm Allen key, unscrew and remove
the 4 screws (A) securing the extension
(see figure 1).

Note: the screws are mounted with a medium
locking compound.

4- 36 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

A

Figure 1

9. Slightly lift the extension and remove it from
the bed by pulling horizontally away from the
bed. Continue the procedure on a workbench.

10. Operate the extension control lever and
remove the two extension slide bars.

Note: the two slide bars are lubricated with
medical grease.

Note: the side of the slide bars with several
holes faces inwards on the bed; in addition,
the first hole is slightly apart and points to the
bottom of the bed.

11. With the medium Phillips head screwdriver,
remove the four screws securing the two
extension lever bearing-assemblies and
remove the lever and its bearing assembly.

12. With the med. Phillips head screwdriver,
remove the eight screws securing the four
extension pads.

Installation

1. Perform the removal procedure in reverse
order, then “adjust” the Trendelenburg/
Reverse Trendelenburg cable, referring to the
“adjustment” section of procedure 4.12
(Trendelenburg/Reverse Trendelenburg cable
replacement).

2. Perform the "Function Checks" on page 2-3 of
this manual.

Removal, Replacement and Adjustment Procedures

4.25) Variable Height pedal
replacement

Tools required: 1 small flat blade screwdriver

1 med. Phillips head screwdriver
1 x 3mm Allen key
1 x 5mm Allen key
1 multigrip pliers
1 wire tie cutter

Removal

Note: the two pedals are connected by a cable
and cannot be separated without being fully
removed.

1. Apply the brakes, adjust the bed to its high
position, then lay the HS and KS sections flat.

2. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed).

WARNING

Electric current passes through the
connectors when the bed is
switched on. Technical staff may be
injured if the bed is not
disconnected from its power supply.

3. Put the headend side-rails in intermediate
position.

4. With the 3mm Allen key unscrew and remove
the four screws securing the headend and
footend covers of the bed. Recover the
washers.

5. Remove the headend cover of the bed.

6. Tip the footend cover of the bed onto its side.

7. With the 3mm Allen key, unscrew and remove
the two screws securing the junction box (A)
at the footend of the chassis (see figure 1).

A

4

Figure 1 1512A418.tif

Evolution LI156Ex Bed from Hill-Rom 4- 37

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4

8. Note down the position of the cables
(see figure 2), then remove the printed circuit
from the junction box.

Figure 2 1512A444.tif

9. Unplug the connector corresponding to the
VH pedals, connected to C1, C2 or C3 on the
printed circuit (see figure 3).

Figure 3 1512A406.tif

10. With the small flat blade screwdriver, open the
chassis cable track through which the
righthand VH pedal cable (viewpoint of a
patient lying down) passes.

11. Remove the cable from the cable track.

12. With the wire tie cutter, cut the two plastic
cable ties attaching the lefthand pedal cables
to the chassis.

Note: the pedal with two cables is on the
lefthand side of the bed (viewpoint of a patient
lying down).

13. Move the VH pedal cables, then reposition the
footend cover horizontally in order to place
the cables on it (see figure 4).

15. With the 5mm Allen key, remove the two screws
(A) securing the lefthand pedal and place it on
the ground. Recover the washers (B)
(see figure 6).

Note: lock washers are used and should be
replaced when installing the pedal.

16. Plug the bed into the mains supply then set
the VH function lock-out switch to the
"unlocked" position (padlock open).

17. Operate the VH lower function until the bed
reaches mid-height, then remove the lefthand
pedal by passing it between the longitudinal
tube of the chassis and the Variable Height
motor (adjust the bed height if necessary).

18. Continue the procedure on a workbench if the
switches are to be replaced.

Removal of Variable Height pedal

electric wiring

Additional tools: 1 multigrip pliers

1 wire stripper
1 electrician's knife
1 soldering iron

Note: the wiring is supplied with the switches
already mounted.

1. Follow the entire removal procedure for the
Variable Height pedals.

2. Lay the pedals upside down on a workbench.

3. With the Phillips head screwdriver, unscrew
the screw (C) securing the slot on each pedal
(see figure 6).

4. Turn over the pedals then remove the central
pin (D) securing the upper section (E)
(see figure 5) using the multigrip pliers for
both pedals.

Note: the central pin (D) has an off-centre
groove for shift movement. The shortest part
of the pin must be directed towards the inside
of the pedal when being installed.

Figure 4 1512A445.tif

14. With the 5mm Allen key, remove the two screws
(A) securing the righthand pedal and place it
on the footend cover after moving it between
the longitudinal tube of the chassis and the
Trend./Rev. Trend. mechanism. Recover the
washers (B) (see figure 6).

4- 38 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Removal, Replacement and Adjustment Procedures

E

D

Figure 5 1512A446.tif

5. Remove the upper section (E) of each pedal
(see figure 5).

6. On each pedal, with the Phillips head
screwdriver, unscrew the 2 screws (F) securing
the spring leaf (G) pressing on the switches
(see figure 6).

E

L

Brown

L=1120

1
2
3
4
5
6
7

COMMON - BROWN

VH LOWER - PINK

VH RAISE - GREEN

Green

RIGHT PEDAL

LEFT PEDAL

F

Green

Brown

Figure 7 1512_448.wmf

G

Installation of pedal electric wiring

H

I

1. Perform the removal procedure in reverse
order. Make sure the wires are connected
properly in the right positions (see figure 7).

2. Perform the "Function Checks" on page 2-3 of
this manual.

K

L=785

Brown

Pink

Green

Pink

Brown

Pink

Brown

J

B

A

D

C

Figure 6 1512A447.wmf

7. With the Phillips head screwdriver, unscrew
the 6 screws (H) securing the underside of
each pedal (J) (see figure 6).

8. Remove the metal support (I) of the pedals to
access the socket containing the switches
(see figure 6).

9. Remove the pins (K) securing the switches (L)
to the socket (see figure 6).

10. Note down the position of the wiring
(see figure 7), then remove it from its housing.

4

Evolution LI156Ex Bed from Hill-Rom 4- 39

Technical Manual

Removal, Replacement and Adjustment Procedures

A HILLENBRAND INDUSTRY

Rev. 001

4.26) Bedside Cabinet support
rails replacement

Tools required: 1 x 5mm Allen key

Removal

1. Apply the brakes, adjust the bed to its high
position, then ensure the Leg and Foot
Sections are horizontal and the siderails are in
the high position.

2. Remove the headboard.

3. Raise the Head Section to at least 50°.

4. Unplug the bed from its power supply. If the
bed has a battery, put the lock-out switches to
their "locked out" position (padlock closed)..

WARNING

Technical staff may be injured if the
bed is not unplugged from its power
supply.

3. With the 5mm Allen key, unscrew and remove
the 6 screws (A) securing the rails (B)
(see figure 1)

Notes:

4

Figure 1 1512A449.tif

Installation

1. Perform the removal procedure in reverse
order.

2. Perform the "Function Checks" on page 2-3 of
this manual.

4- 40 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Section Contents

Parts List

5. Parts List

Ordering Service Parts .................................... 5- 2

Exchange Policy ............................................. 5- 3

In-warranty exchanges .............................. 5- 3

Recommended Spare Parts .......................... 5- 3

5.1 Castors ................................................. 5- 4

5.2 Single Brake ......................................... 5- 6

5.3 Power supply ....................................... 5- 8

5.4 Variable Height Power ..................... 5- 10

5.5 Simple Variable Height: connector 5- 12

5.6 Variable Height: Trendelenburg/Reverse

Trendelenburg mechanism ......... 5- 14

5.7 Variable Height Pedal ...................... 5- 16

5.8 End of Travel Switch Assembly ........ 5- 18

5.9 Chassis Covers .................................. 5- 20

5.10 Lift Arm ............................................... 5- 22

5.11 Lift Arm: conduit ............................... 5- 24

5.12 Intermediate Section ....................... 5- 26

5.13 Head Section Articulation and Release

Lever .............................................. 5- 28

5.14 Knee Section ..................................... 5- 30

5.15 Knee Section Motor and Bedframe

Junction Box ................................. 5- 32

5.16 Head Section Power and Assist ...... 5- 34

5.17 CPR - Head Section Release........... 5- 36

5.18 Leg Section Mechanism .................. 5- 38

5.19 Trendelenburg/Reverse Trendelenburg

lever ............................................... 5- 40

5.20 Ends of the Bed ................................ 5- 42

5. 21Fixed and Sliding Extensions ............ 5- 44

5.22 Side-rail Fastenings ........................... 5- 46

5.23 Headend Side-rails up to 28/02/01 5- 48

5.24 Headend Side-rails after 28/02/01 . 5- 50

5.25 Footend Side-rails up to 28/02/01 ... 5- 52

5.26 Footend Side-rails after 28/02/01 .... 5- 54

5.27 Hand Pendant Control Unit

Connection ................................... 5- 56

5.28 Hard Surfaces ................................... 5- 58

5.29 Earthing ............................................. 5- 60

5.30 Head and Footboards ..................... 5- 62

5.31 Labels for Symmetrical Headboard

156Ex Bed ...................................... 5- 64

5.32 Labels for Horizontal Symmetrical

Headboard 156Ex Bed ................ 5- 66

5

Evolution LI156Ex Bed from Hill-Rom 5- 1

Technical Manual

Parts List

A HILLENBRAND INDUSTRY

Rev. 001

Ordering Service Parts

Use the parts list in this manual to identify the part
numbers you require.

Call the after sales service of your national Hill-Rom
representative (refer to the last page of this manual).
To help expedite the processing of your parts order,
please have your customer account number,
purchase order number, product number and serial
number of the bed when you call.

Note: You will find the product number and
serial number on the product identification label
located at the headend of the bed on the
chassis, see pages 1-11 and 5-61.

For your convenience, a fax number is available for
ordering parts, requesting prices or chasing up an
order: refer to the last page of this manual.

Postage will be invoiced for orders below FF150.

5

Delivery:

• 48 hours if parts are available.

• Postage paid dispatch.

• Dispatch chargees are included in the price of
the parts.

• Parts to be manufactured have a delay of 3
weeks.

Please address all orders to your National Hill-Rom
representative (refer to the last page of this manual).

For: Technical support - parts

5- 2 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Parts List

Exchange policy

In-warranty exchanges

Out-of-warranty exchanges

In-warranty exchanges

Hill-Rom will request that certain defective parts be
systematically returned for assessment.

In certain cases, the invoice sent with the parts will
show the full selling price of the parts. This is for
Hill-Rom's internal use only and should not be
confused with the price you will actually pay.

Recommended Spare Parts

List of recommended spare parts for 10 Evolution
beds over 3 years:

Description Qty

I/O touchpad for righthand side-rail 1

I/O touchpad for lefthand side-rail 1

Power Unit 1

Variable Height Motor 1

Head Section Motor 1

Knee Section Motor 1

1512Atbl_500

Strongly recommended accessory for troubleshooting
on the LI156Ex: hand pendant test control unit:
QD0534 (can be used on all models).

Evolution LI156Ex Bed from Hill-Rom 5- 3

Technical Manual

5

Parts List

5.1 Castors

No. Qty Reference Description

1 4 S30246 CASTOR SUPPORT
4 8 VI0372 CONTACT WASHER 8x+F21718 Z.B
3 8 VI0484 BHC SCREW M8x25 Z.B
6 1 LTZ200 MB 156E SH CHASSIS + INSERTS

or 1 LTZ203 MB 156E HSH CHASSIS + INSERTS

CASTOR DIA.:150 SINGLE WHEEL

2 - 7 3 RO0067 CAST. 2476 PJX 150 R26 LN48

5 1 RO0068 CAST. 2474 PJX 150 R26 LN48 (STEER)

K.M. CASTOR DIA.:150 TWIN WHEEL

2 - 7 3 RO0075 CAST. D:150 TWIN WHEEL BEIGE

5 1 RO0076 CAST. D:150 TWIN WHEEL STEER BEIGE

CASTOR DIA.:150 ANTISTATIC SINGLE WHEEL: (BATTERY OPTION)

7 1 RO0067 CAST. 2476 PJX 150 R26 LN48
5 1 RO0068 CAST. 2474 PJX 150 R26 LN48 (STEER)
2 2 RO0084 CAST. D:150 PJX ANSTATIC BEIGE

CASTOR DIA.:150 ANTISTATIC TWIN WHEEL: (BATTERY OPTION)

7 1 RO0075 CAST. D:150 TWIN WHEEL BEIGE
5 1 RO0076 CAST. D:150 TWIN WHEEL STEER BEIGE
2 2 RO0085 CAST. D:150 TWIN WHEEL ANSTATIC BEIGE

CASTOR DIA.:150 "INTEGRAL"

2 - 7 3 RO0099 CAST. 2046 UAP 150 R26-289 LN48

5 1 RO0098 CAST. 2044 UAP 150 R26-285 LN48 (STEER)

CASTOR DIA.:150 ANTISTATIC "INTEGRAL"

7 1 RO0099 CAST. 2046 UAP 150 R26-289 LN48
5 1 RO0098 CAST. 2044 UAP 150 R26-285 LN48 (STEER)
2 2 RO0100 CAST. 2046 XSP 150 R26-285 LN48

A HILLENBRAND INDUSTRY

Rev. 001

5

Note: Castors 2 and 5 are reversed for the footend steering castor option.

1512Atbl_501

5- 4 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Parts List

1512_501.tif

Evolution LI156Ex Bed from Hill-Rom 5- 5

Technical Manual

5

Parts List

5.2 Single Brake

No. Qty Reference Description

1 2 QD0529 PLASTIC WASHER D:8x15 TH.:3
2 2 S20499 SINGLE BRAKE PIN

3 2 S20764 SS EMERGENCY BRAKING CONNECTING ROD

4 1 QD1316 EMERGENCY BRAKING PEDAL LABEL

5 1 S30248 BEIGE EMERGENCY BRAKING PEDAL COVER

6 2 S20867 EMERGENCY BRAKING SQUARE BRACKET

7 3 S30439 SINGLE BRAKE BEARING ASSEMBLY

8 1 S30279 GREEN EMERGENCY BRAKING PEDAL COVER

9 4 VI0418 METAL SCREW NO.10x13 CBL Z.B

10 6 VI0371 WASHER 6x12 Z.B

11 2 VI0545 BHC LOCKSCREW M6x16 10/9 Z.B

12 4 VI0514 POZIDRIVE METAL SCREW NO.14x19 Z.B

13 2 S30198 HEXAGON TUNNEL GUIDE BUSH
14 4 S30432 HEXAGON BAR COVER 156C

15 2 LT0962 SINGLE BRAKE HEXAGON BAR
16 4 VI0488 TRIGOB SCREW FZ M4x10 Z.B

17 1 LT0963 MB SINGLE BRAKE PEDAL
18 4 QD1122 SKIFFY PLUG

19 2 VI0040 CHC SCREW M6 x 40 ZB

20 2 VI0159 NYLSTOP LOCKNUT HM6 ZB

A HILLENBRAND INDUSTRY

Rev. 001

5

1512Atbl_502

5- 6 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Parts List

1512_502.tif

Evolution LI156Ex Bed from Hill-Rom 5- 7

Technical Manual

5

Parts List

5.3 Power Supply

No. Qty Reference Description

1 1 QD1466 CB09 UNIT 110V/120V

or 1 QD1467 CB09 UNIT 110V
or 1 QD1457 CB09 UNIT 220V/240V

2 1 QD1458 POWER SUPPLY CABLE (EUROPE)

or 1 QD1459 POWER SUPPLY CABLE (GB)

or 1 QD1460 POWER SUPPLY CABLE (SWITZERLAND)

or 1 QD1461 POWER SUPPLY CABLE (GERMANY)

or 1 QD1463 POWER SUPPLY CABLE (USA)

3 2 S30363 STRAIN-RELIEF
4 4 VI0093 PANHEAD METAL SCREW NO.10*32 Z.B
5 2 VI0464 BHC SCREW M5*16 Z.B.
6 10 QD0404 STRAP 186 - 210
7 1 QD0808 SES STRAP 380/47 SL HT-C NAT
8 1 S30454 JUNCTION BOX
9 2 VI0464 BHC SCREW M5*16 Z.B.

10 1 QD1583 PRINTED CIRCUIT

11 2 VI0390 WASHER 5x12 Z.B
12 1 QD0557 LINAK BATTERY
13 4 VI0464 BHC SCREW M5x16 Z.B
14 4 VI0370 NYLSTOP LOCKNUT SB M5 Z.B
15 2 VI0514 METAL SCREW NO.14x19 Z.B
16 2 F10103 BATTERY SUPPORT
17 1 Page 1-13 BATTERY LABEL 156
18 1 Page 1-13 BATTERY LABEL 156 FRENCH

A HILLENBRAND INDUSTRY

Rev. 001

5

1512Atbl_503

5- 8 Evolution LI156Ex Bed from Hill-Rom

Technical Manual

A HILLENBRAND INDUSTRY

Rev. 001

Parts List

1512A503.tif

Evolution LI156Ex Bed from Hill-Rom 5- 9

Technical Manual

5

Parts List

5.4 Variable Height Power

No. Qty Reference Description

1 2 QD0526 TRUARC CIRCLIPS 10 SPRINGFIX
2 2 QD0527 TRUARC CIRCLIPS 12 SPRINGFIX
3 2 S10822 MOTOR HEAD BUSH
4 1 S10555 KNEE SECTION MOTOR CLEVIS FASTENING PIN

5 1 S10667 TR/REV TR FOOT PIN MOTOR SPIGOT

6 1 VE0117 VH MOTOR

7 1 S20905 VH MOTOR REINFORCEMENT WIRE

8 1 S20906 VH MOTOR REINFORCEMENT

9 2 VI0367 NYLSTOP LOCKNUT M8 S.B. Z.B.

10 2 VI0372 CONTACT WASHER 8*18 ZB

A HILLENBRAND INDUSTRY

Rev. 001

1512Atbl_504

5

5- 10 Evolution LI156Ex Bed from Hill-Rom

Technical Manual