Viaclin 2502 Service manual

SERVICE MANUAL

LFT5508

Issue 3

VIACLIN

Alternating Pressure Mattress Overlay

Model 2502

LFT5508 - AMENDMENT RECORD

CHANGE

REVISION

NOTE

1
2
3 025/02 011/02

023/02 -

- -

- -

TECH.
NOTE BRIEF DETAILS SIGNATURE DATE

To have a common flow restrictor assembly for 2503 &

5202

Replace part number MEC483 with MEC14753

Redrawn instruction diagrams to show overlay straps

around mattress.

Reformated Viaclin service manual 2502 so that it is

similar in structure as the newer manuals. Changed text

‘5.5 ltr/min’ to ‘6.5 ltr/min’. Added note”EXISTING 2501

OR 2502 THAT REQUIRE A REPLACEMENT

POWERUNIT WILL BE REPLACED BY A 2503 POWER

UNIT (SA242) AND AN APPROPRIATE ADAPTER (REF:

MOD KIT MOD14831)”. See IU 088/02

K.Wilson 3/9/02

K.Wilson 16/9/02

K.Wilson 3/10/02

K.Wilson 22/10/02

POLICY STATEMENT

Pegasus Ltd has a policy of continuous product improvement and reserves the right to change details presented in this
Service Manual without notice.

Tel: [phone]

Fax:: [phone]

E-mail: [e-mail]

Web Site: www.pegasus-uk.com

LIST OF CONTENTS

Section Title

1. SAFETY STATEMENT

2. INTRODUCTION
General
System Description

3. SETTING UP/OPERATION
Setting Up
Profiling and Knee-Breaking
Moving the Bed and Power Cuts
CPR (Cardio Pulmonary Resuscitation)
Deflation, Removal, Carrying and Storage
Alarms and Fault Finding

4. CONSTRUCTION OF PRODUCT
Major Elements of the System
Mattress
Power Unit
Technical Details

5. INFECTION CONTROL AND CLEANING
Infection Control
Cleaning Guidelines

6. EQUIPMENT MAINTENANCE
General
Power Unit
Mattress

7. TEST EQUIPMENT

8. PARTS LIST
Power Unit
Mattress

LTF5508 i Issue 3
VIACLIN MODEL 2502 Oct 02

SECTION 1 - SAFETY STATEMENT

1.1. The VIACLIN system must be used in accordance with the manufacturer's instructions.

1.2. The mains electricity supply within the building where the VIACLIN system is to be used must comply

with IEE Regulations.

1.3. Only personnel trained or formally approved by Pegasus Ltd in operation and maintenance of Pegasus

systems may perform maintenance, modification or repair work on Pegasus Ltd Power Control Units.

1.4. Unqualified personnel attempting to work on Pegasus Ltd Power Control Units risk serious injury to

themselves and others, and possibly death by electrocution.

Do not work, or attempt to work on Pegasus Power Units unless you are properly qualified
to do so.

1.5. Pegasus Ltd systems are designed to comply with all relevant electrical safety, manufacturing and

performance standards published by IS0, IEE & BSI.

1.6 Materials used for cleaning procedures may be subject to COSHH regulations - manufacturer's

Instructions for Use must be followed at all times.

1.7 Materials used for maintenance and repair may be subject to COSHH regulations - manufacturer's

Instructions for Use must be followed at all times.

LFT5508 1.1 Issue 3
VIACLIN MODEL 2502 Oct 02

SECTION 2 - INTRODUCTION

2.1 GENERAL

The VIACLIN Alternating Pressure Mattress Overlay is designed for use whenever patients have some mobility problems
and/or who are vulnerable to pressure ulcer development and/or who have existing tissue damage. It gives gentle, dynamic
support to bedridden and immobile people in recumbent, supine and knee-break postures, providing alternatively support
then pressure relief to each part of the underside of the patient.

The bed can be repositioned whilst the Mattress Overlay is still inflated.

The system is suitable for use in hospitals, nursing homes and in the community.

2.2 SYSTEM DESCRIPTION

The system consists of a power unit and a mattress overlay. Audio and visual alarms activate if a fault condition exists for
more than three minutes (compressor failure, overlay or airpipe failure). An audio alarm sounds if the mains supply fails
(disconnected or switched off). These alarms alerts medical staff to the malfunction.

The specially constructed overlay comprises a series of pairs of transverse cells, which are inflated and deflated alternately.
Air to inflate the overlay is provided by an electronically controlled power unit. The air pressure in the overlay is
continuously monitored, and the system is completely self-regulating. The overlay is connected to the power unit by
means of an airpipe which features quick release connections at the power unit end, for convenience and rapid deflation,
to allow cardiac resuscitation procedures. Operator controls are purposely kept to a minimum.

The overlay is positioned on top of the normal bed mattress.

LFT5508 2.1 Issue 3
VIACLIN MODEL 2502 Oct 02

SECTION 3 - SETTING UP/OPERATION

3.1 SETTING UP

CAUTION: Use only on top of the existing bed mattress.

Remove the bedding from the bed.

Ensure there are no sharp objects to damage the Overlay. Place the Overlay on top of the bed mattress with the
umbilical at the foot end of the bed. Tuck the two end flaps under the bed mattress.

Secure the Overlay straps to the mattress. Do not secure to the bed frame (only secure Overlay straps loosely to the
moving parts of the bed frame, (if applicable).

LFT5508 3.1 Issue 3
VIACLIN MODEL 2502 Oct 02

Hang the power unit on the bed or place on the floor.

Connect the three airpipe connectors on to the power unit connectors. Plug the power unit into a suitable mains
socket and switch on.

The system will take approximately 20 minutes to reach full inflation pressure, at which time the green NORMAL light
will come on and the amber light will extinguish. During this start up phase the red FAULT light may come on and the
audible alarm sound, if this occurs turn the power unit off and back on again to reset the alarm.

LFT5508 3.2 Issue 3
VIACLIN MODEL 2502 Oct 02

12

10

9

8

111

2

3

7

4

5

6

!!ALARM!!

VIACLIN

Alternating Pressure Overlay

Once inflated, check the securing straps and tighten if required. For maximum benefit, use only one sheet loosely
placed over the mattress. If the sheet is tucked in ensure that it is left loose over the mattress to avoid hammocking.

Once a patient is placed on the mattress the system will adjust automatically to the patient characteristics
(weight/position) to provide optimum clinical benefit for each patient. The mattress may feel firm at first until it has
adjusted to the individual. Allow approximately 15 minutes for this automatic adjustment to be completed.

If the mattress does not perform as described above, please refer to Section F of this guide ‘Alarms and Fault Finding’.

3.2 PROFILING AND KNEE-BREAKING

The system may be used while the bed is in the profiled or knee-break position:

1. With the bed in its present position, loosen or release the Overlay securing straps.

2. Change the bed to the required position (profile or knee-break).

3. Re-secure the securing straps.

NOTE: Straps must be attached to moving parts of the bed frame to avoid jamming the bed mechanism or stretching
the overlay.

LFT5508 3.3 Issue 3
VIACLIN MODEL 2502 Oct 02

3.3 MOVING THE BED AND POWER CUTS

CAUTION: The patient will not receive the benefit of the VIACLIN system while it is disconnected

and the power unit is switched off. Therefore the system should be reconnected as
soon as possible once the bed has been moved to its new position.

If you need to move the bed with the Mattress Overlay still inflated or in the event of a major mains power failure,
carry out the following procedure:

1. OVERLAY

a Disconnect the two red airpipes from the power unit and quickly connect together.
b Disconnect the black airpipe from the power unit.

2. POWER UNIT

a Switch off and reset the power-down alarm. Disconnect from the mains.

b. The overlay will remain inflated for over 24 hours. The bed can now be moved.

LFT5508 3.4 Issue 3
VIACLIN MODEL 2502 Oct 02

3.4 CPR (CARDIO PULMONARY RESUSCITATION)

In the event of cardiac arrest, disconnect both red airpipes:

1. While system is operating normally,

disconnect from the power unit.

2. While moving the bed, disconnect

from each other.

3.5 DEFLATION, REMOVAL, CARRYING AND STORAGE

POWER UNIT

1. Switch off.

2. Silence alarm.

3. Disconnect from mains.

4. Disconnect all airpipes.

5. Remove from bed.

OVERLAY

1. Undo all securing straps.

2. Roll up the Overlay.

LFT5508 3.5 Issue 3
VIACLIN MODEL 2502 Oct 02

3.6 ALARMS AND FAULT FINDING

ALARMS

The VIACLIN Alternating Pressure Mattress Overlay is equipped with a sophisticated set of alarm functions, these
alert the user to the status of the available mains supply and any mattress overlay defect.

In normal conditions with mains power available, the power unit turned on, the mattress overlay fully inflated and
alternating, the status light on the power unit front panel will be green.

If at any time the mains power should be removed from the power unit, an audible alarm will be heard. This audible
alarm may be cancelled by pressing the alarm reset button for approximately 2 seconds.

If the product develops a defect whilst in use, the status light will turn red and an audible alarm will be heard. This
alarm may be cancelled by turning the mains power switch on the side of the power unit to the OFF (O) position,
then pressing the alarm reset button for approximately 2 seconds.

FAULT FINDING.

SYMPTOM ACTION

No lights on power unit

Status light red and alarm sounding, or alarm sounding
but no lights

Check power unit is connected to the mains power supply
and that the power unit switch is turned to the ON (1)
position.

Turn mains switch on power unit OFF, press alarm reset
button for approximately 2 seconds until alarm cancels, then
switch on again:

a. If the status light does not illuminate, mains power

to the power unit has been lost. Check that the
power unit is connected to the mains supply and
that the power unit switch is turned to the ON (1)
position

b. If the alarm clears then returns after approximately

12 minutes, check air connection between power
unit and mattress overlay, ensuring that all air
connectors are pushed fully home and that the
airpipe is not folded or bent causing air flow to be
reduced. Turn mains switch on power unit OFF,
press the alarm reset button for approximately
2 seconds until alarm cancels, then switch on again

Mattress overlay not inflating, status light green Check all air pipes as in (b) above

LFT5508 3.6 Issue 3
VIACLIN MODEL 2502 Oct 02

SECTION 4 – CONSTRUCTION OF PRODUCT

4.1 MAJOR ELEMENTS OF SYSTEM

The product comprises two major elements:

1. Mattress Overlay

2. Power Unit

4.2 MATTRESS OVERLAY

The mattress has 18 transverse cells interconnected, such that there are 2 sets of cells - each being fully inflated then
fully deflated.

The cells are chemically bonded to pneumatic tubing, which is formed into a harness terminated by the CPR
connector.

The Mattress has a cover which protects the mattress and the bed base from soiling by body fluids, and has a smooth
surface finish to facilitate cleaning.

4.3. POWER UNIT

The Power Unit comprises a housing that has a moulded lid, a base and chassis assembly that is fixed together by four
socket-headed screws that also secure the hook assembly. When closed the casing is sealed to IP44.

The lid incorporates the following:

1. Mains switch - A double-pole, switch mounted the side wall of the casing.

2. Alarm reset button - Fixed adjacent to the mains switch.

3. Fuses - Two 1 Amp, anti surge fuses are fitted adjacent to the mains switch.

4. Air connectors - There are three connectors to enable connection of the airpipe fitted to the opposite side

wall of the casing to that used for the mains switch.

5. Front panel label - The label has a hole for the tri-coloured LED that indicates power supply on (amber),

normal running mode (green) and fault (red). The LED is connected to the integral electronic control unit
(ECU) via an IDT connector.

LFT5508 4.1 Issue 3
VIACLIN MODEL 2502 Oct 02