Eschmann RX-500 Service manual
RX500
OPERATION TABLE
Service Manual
698265
T-SM13h
Preliminary Information
Technical Data
Safety Notes
Introduction
Description
Maintenance
Eschmann After Sales Service Department
The Eschmann After Sales Service Department is staffed and equipped to provide advice and assistance
during normal office hours. To avoid delays when making enquires, please quote the Model and Serial
Number of your Operation Table which is shown on the Serial Number plate, the location of which is
shown below. Please ensure you include all alpha and numeric digits of the Serial Number .
The Serial Number Plate
is on the inside of the
long trunk section here.
For further information visit www.eschmann.co.uk
All correspondence relating to the after sales service of Eschmann Equipment to be addressed to :
UK Customers
Eschmann Equipment, P eter Road, Lancing, W est Susse x BN15 8TJ , England.
Tel: +44 (0) 1903 765040. Fax: +44 (0) 1903 762006.
Overseas Customers
Contact your local distributor. In case of doubt contact Eschmann Equipment.
Patents and Trade marks
The ESCHMANN name and logo are registered tr ade marks of Eschmann Holdings Limited .
“Eschmann Equipment” is a trading name of Eschmann Holdings L imited.
“RX600” is a tr ade mark of Eschmann Holdings L imited.
Patents: GB 2260075 & GB 2242624; F rance 536922 & 450836; US5116032;
Germany P69206378.1 & P69104883.5; Italy 536922 & 450836.
Patents pending in Japan, application n umbers 263630/92 & 97990/91.
Copyright © 2002
All rights reserved. This booklet is protected by cop yright. No part of it may be reproduced, stored in a retriev al
system or transmitted in any form or by any means , electronic, mechanical, photocopying, recording or otherwise
without written permission from Eschmann Holdings Limited.
The information in this publication was correct at the time of going to print. The Company , howe ver, reserves the
right to modify or improve the equipment referred to .
If the CE mark is affixed to the product, it indicates compliance with Council Directive
93/42/EEC of 14 June 1993 concerning medical devices.
T-SM13h October 2002
Service Manual
RX500RX500
RX500
RX500RX500
OPERATION TABLE
READ THESE INSTRUCTIONS BEFORE USE
Keep these Instructions in a saf e convenient place for future ref erence. Read in conjunction
with the relevant Publications detailed in the preliminary information section.
CONTENTS
Section Contents Page
1. PRELIMINARY INFORMATION ..................... 4
2. TECHNICAL DAT A.......................................... 4
3. SAFETY NOTES ............................................ 5
4. INTRODUCTION............................................ 6
General ....................................................... 7
Electrical System ........................................ 7
Main Control Board ................................. 7
Height Opto Board .................................. 7
Tilt Opto Board........................................ 7
Base Distribution Board .......................... 8
Top-Of-Column Distr ibution Board .......... 8
Top-Of-Column Solenoids Board ............ 8
Power Circuits ......................................... 8
Hand Control ........................................... 8
Footswitch ............................................... 8
Ta ble-Base ON/OFF Control ................... 8
Built-in Battery Charger........................... 9
External Batter y Charger ........................ 9
Standby System Connections................. 9
5. DESCRIPTION ............................................. 10
6. MAINTENANCE ........................................... 14
General ..................................................... 14
Cleaning and Storage ............................... 14
General Care and Lubrication................... 14
Gas Springs .......................................... 14
Head, Leg, & Infill Sections................... 14
Head, Leg, & Infill-Locking Mech. ......... 14
Long and Short Tr unk Sections ............. 14
Radiographic Tops................................. 14
Underside of the Table Base ................. 14
Access to Fuses.................................... 15
Hand control.......................................... 15
After Maintenance................................. 15
Functional Checks .................................... 15
General ................................................. 15
Hydraulic System...................................... 18
General ................................................. 18
Topping-Up Reservoir ........................... 18
Adjustments .............................................. 18
Trendelenburg Microswitch ................... 18
Lateral Tilt Opto..................................... 18
Break Microswitch................................. 19
Tilt Switch.............................................. 20
Removal and Installation........................... 20
General ................................................. 20
Remove Table Base Covers .................. 20
Install Table End Base Covers .............. 20
Remove Top-Of-Column Covers ........... 21
Install Top-Of-Column Covers ............... 21
Releasing Telescopic Cover & Upstand 21
Refixing Telescopic Cover & Upstand ... 21
Removing the Telescopic Cover............ 21
Replacing the Telescopic Cover ............ 21
Section Contents Page
Remove Long & Short Trunk Assemblies . 23
Install Long & Short Trunk Assemblies . 23
Remove Break Cylinder ........................ 26
Install Break Cylinder ............................ 26
Remove Lateral Tilt Cylinder................. 27
Install Lateral Tilt Cylinder..................... 27
Remove Trendelenburg Cylinder........... 27
Install Trendelenburg Cylinder............... 28
Remove Height Cylinder ....................... 28
Install Height Cylinder ........................... 28
Gas Spring Replacement...................... 29
Remove Batteries.................................. 29
Install Batteries ..................................... 29
Remove the Base Feet ......................... 29
Install the Base Feet ............................. 30
Infill interlocking mechanism replacement ..............
Push button replacement and adjustment ..............
Remove/Install Hydraulic Components .. 30
Remove/Install Electrical Components... 30
Fault Diagnosis ......................................... 31
Table 1: Fault Diagnosis ........................ 31
Circuit Diagram Index............................ 30
Table 2: Codes for 2-Digit Display ......... 34
FIGURES
1 RX500 Operation Table .................................. 6
2 RX500 Operation Table: Base Details .......... 10
3 RX500 Operation Table: Column/Trunk Detail 12
4 RX500 Operation T ab le: Base
5 RX500 Operation T able: Base
6 Table Tilted for Access .................................. 15
7 Base Detail Table Tilted ................................ 15
8 Main Control Board....................................... 15
9 Hydraulic System - Schematic Diagram....... 16
10 Hydraulic System - Main Components ......... 17
11 Trendelenburg Microswitch ........................... 19
12 Lateral Tilt Opto ............................................ 19
13 Break Microswitch ........................................ 19
14 Tilt Switch ..................................................... 20
15 Cover Retaining Push Riv ets........................ 21
16 Top of Column Hinge Assembly Detail ......... 22
17 Top of Trendelenburg Cylinder...................... 23
18 Break Cylinders ............................................ 24
19 Lateral Tilt Cylinder ....................................... 25
20 Trendelenburg Cylinder ................................ 27
21 Top of Column Detail .................................... 28
22 Bottom of Height Cylinder Detail .................. 28
23 Gas Spring Detail ......................................... 29
24 Base Feet Detail ........................................... 29
25 Infill interlocking mechanism......................... 30
26 Catch mechanism......................................... 30
27 Hand Control Functions................................ 34
28-35Circuit Diagrams*................................. 35-40
(* also see Circuit Diagram Index on page 33)
(short trunk end) ....
(long trunk end) .....
30
30
13
13
T-SM13h 3/40
1. PRELIMINARY INFORMATION
1.1 This Service Manual should be referred to for details of the RX500 Powered Operation Table,
REF 80-600-29 (series) and REF 80-600-61 (series) having Serial Number R5BC8J0000 or above.
Related Technical Publications, available on request from Eschmann Equipment :-
Instructions for Use - T-IM28 - RX500 Powered Operation Table
Illustrated Parts List - T-IPL11- RX500 Powered Operation Table
1.2 Instruction and Service Manuals should be readily accessible for reference prior to and when operating,
cleaning and servicing the Operation Table.
2. TECHNICAL DA TA
DIMENSION
Table with standard table-top (Fig. 1) :
Width including sidebars ............................. 560mm
Sidebars ......................................(31.75 x 6.35)mm
Overall length (with infill section)............... 2000mm
Minimum table height (without mattresses) ....... 700mm
Maximum table height (without mattresses) ....1040mm
SAFETY
The table is built to comply with BS5724 Part 1,
BS5724 Part 2 Section 2.22, IEC601-1,
IEC601-1-2:1993 and BS6859 Part 1. The mattresses
comply with BS2891.
TABLE LOADING
The standard table (Fig. 1) satisfies a static load test
in accordance with the requirements of BS5724
SYMBOLS & SAFETY CLASSIFICATIONS
Caution Refer to the accompanying
documents, the “Instructions for Use”.
or IPX 4 indicates that the equipment will
withstand a moderate quantity of fluid spilled
from above.
Safety Category
Indicates that the equipment is in safety
category BF, i.e. it is manufactured to a
safety standard which agrees with
international regulations for medical electrical
equipment, and provides a high degree of protection
against electric shock. The symbol also indicates that
the equipment will not be damaged by defibrillator
discharge.
Indicates that the equipment is in safety
category B, i.e. it is manufactured to a safety
standard which agrees with international regulations
for medical electrical equipment, and provides a
minimum degree of protection against electric shock.
Class 2 Indicates that the built-in battery
charger is designed to electrical protection Class 2.
MOVEMENTS
Maximum Trendelenburg....................................35°
Maximum Reverse Trendelenburg......................35°
Maximum Lateral Tilt (left and right)...................15°
Maximum Extension......................................... 220°
Maximum Flexion.............................................130°
Head section adjustment ................................ ±45°
Leg section adjustment ......................... (-100+10)°
Note: With the table at minimum height, maximum
Trendelenburg, and maximum head and leg section
movements are reduced due to physical restrictions
(i.e. proximity of floor)..
WEIGHT (nominal)
Ta ble with standard table-top (Fig. 1)............ 300kg
Anaesthetic Proof
Indicates that the parts of the equipment marked
AP are designed for use within a distance of (5
to 25cm) of a part of an enclosed medical gas
system. BS5724 Part 1, 1989 refers.
Indicates that the parts of the equipment
marked APG are designed for use within a
distance of 5cm of a part of an enclosed medical
gas system. BS5724 Part 1,1989 refers.
WARNING
The head section of this operation table is
classified as ‘EQ UIPMENT not suitable f or use in
the presence of a flammable anaesthetic mixture
with air or with Oxygen or Nitrous Oxide’ and is
NOT classified as ‘Category AP Equipment’ or
‘Category APG Equipment’ when it (the head
section) is in its lowest position and the table top
is in full Trendelenburg position.
Inspection
The table must be inspected at regular intervals, and
if necessary , serviced, to ensure that it complies with
all AP and APG requirements relevant to physical
deterioration or breakage of electrical components,
connections and cable insulation.
4/40 T-SM13h
2. TECHNICAL DA TA
MISCELLANEOUS
RX500RX500
RX500
RX500RX500
OPERATION TABLE
Antistatic requirements
The table has an antistatic pathway from the tabletop, through an internal resistor to the castors, which
are held in contact with the floor at all times.
CAUTION
1. T o complete the antistatic pathway , the tabl e
must be used on an electrically conductive, or
on an antistatic floor.
2. Always use purpose-designed Eschmann
mattresses to maintain the antistatic pathway.
Electrical data
System Power
Batteries:
Type....................................... Two sealed lead-acid
Output (each) ......................................... 12V 24Ah
Built-In Battery Charger:
Input ...................................... 200-240Vac 50/60Hz
Output ..............................27.6Vdc (nom) 3A (max)
System Fuses:
Motor....................................... 30A 1.5in. (AGU 30)
Base Control Board: (1)........ F6.3A 250V 20mm
(1)........ T2.5A 250V 20mm
(1)........... T2A 250V 20mm
CAUTION
This equipment contains environmentally
hazardous lead-acid batteries. If the batteries fail,
or if the equipment is to be disposed of, it is
recommended that the batteries are taken to a
disposal site designated for the disposal of leadacid batteries, or that the batteries are collected
by an agent who specialises in the collection of
lead-acid batteries.
Hydraulic Oil
Type.....................Eschmann RX (Part No. 699408)
3. SAFETY NOTES
Attention to the following points will prolong the life and efficiency of the RX500 Powered
Operation Table and will help to avoid the risk of accidents, or damage.
DO:
♦ Keep the Instruction Manual close-to-hand.
♦ Read the instructions carefully before using table.
♦ Check that the head and leg sections are secure,
and put the table base in the braked position
before use.
♦ Disconnect the built-in battery charger from the
power supply and switch tab le off before washing.
♦ Read and follow the instructions f or cleaning, and
for the care of the mattresses.
♦ Use the correct mattresses and accessories.
♦ Remove table accessories and their clamps (in
particular rotary clamps) from sidebars, when
they are not being used.
♦ Ensure that the table is serviced at regular intervals
(every 6 months is the recommended frequency)
by Eschmann personnel only , or accredited agents.
DO NOT:
♦ Lift the table by its table-top.
♦ Push the table over rough surf aces, use a trolley .
♦ Drop the table (or individual sections).
♦ Put heavy weights on the table sections.
♦ Put sharp objects on, or against, mattresses,
pads, or the radiographic table-tops.
♦ Drop heavy objects onto the radiographic tab le-tops.
♦ Spill oil, ether, or other fluids onto the
mattresses or the pads.
♦ Pull the table by any of the table-top sections,
always push it.
♦ Hold or support the leg section by its black
radiographic top, as this is a remov able item and
might come off.
Note: The table cannot be used (under normal
circumstances) with table base standby door open.
WARNING
The RX500 Powered Operation Table has been designed to minimise the possibility of accidental
electrosurgery burns. Contact with any metal surfaces (e.g. table side bars, or other equipment
etc.) can cause burns during electrosurgery and must be avoided.
With the table in (or during transition into) the castor position, the centre of gravity of the patient
(normally the perineum) should lie no more than 200mm away from the centre of the column (i.e. no
more than the length of the short trunk section). Whenever this is not practical the overhanging
weight of the patient and table should be adequately supported (e.g. by at least two able people).
Also see Warnings in Instruction for Use and within the text of this publication.
T-SM13h 5/40
4. INTRODUCTION
View on ‘A’
1. Head section
2. Infill section
3. Short trunk section
4. Long trunk section
5 Leg section
6. Release bar
7. Gas springs
8. Release button (leg section removal)
9. Release button (Infill section removal)
10. Hand control
11. Release button (head section removal)
12. Release bar
13. Telescopic column
14. Table base
15. Hand control or footswitch socket
16. Hand control or footswitch socket
View on base short trunk end
17. Hand control plug
18. Table
19. Push button switches to engage standby
hydraulic connectors
20. Standby hydraulic connectors
21. Quick-charge external battery charge socket
22. High current 30A fuse
23. Standby door microswitch
24. Standby power pack connector
25. Standby door
26. Built-in battery charger socket
27. Battery charger ‘on’ indicator (green)
28. Battery charger door
29. Removable mains lead
30. Cover retaining screws
31. Top of column covers
View on base long trunk end
(on/off) switch
Fig. 1 RX500 Powered Operation Table
6/40 T-SM13h
4. INTRODUCTION
RX500RX500
RX500
RX500RX500
OPERATION TABLE
GENERAL
4.1 This Service Manual contains a technical
description and maintenance procedures for the
RX500 Pow ered Operation Table.
4.2 The RX500 Pow ered Operation Table is a fully
mobile table with a five section top comprising short
and long trunk sections, an interchangeable infill
section and head and leg sections.
4.3 The table enables a full range of surgical and
radiographic procedures to be done including: general,
urological, gynaecological, cardiothoracic, ophthalmic,
ENT and neurosurgical. Certain procedures require
the addition of specific accessories, information about
which is availab le on request.
4.4 The RX500 Powered Operation Table is an
electro-hydraulically operated, battery powered unit,
remotely operated from a touch-button hand control, or
a footswitch, both plug into the top of the table column
4.5 Power is provided by tw o 12V sealed lead-acid
batteries in the table base. The 12V batteries are
connected in series to give an output voltage of 24V.
T rickle charging for the batteries is pro vided by an inbuilt
battery charger, provision is also made for connection
of an external battery charger for quick battery charging.
4.6 All table top trunk movements are electrically
controlled using either the hand control or, as an
optional accessory the four function foots witch (height
and Trendelenburg only) which is used by the surgeon
during certain procedures.
4.7 The operation table has these main sections:
G Base.
G Central column.
G Long trunk.
G Short trunk.
G Interchangeable head, leg and infill sections.
NOTE: Instr uction and Service manuals should be
readily accessible for reference prior to, and when
operating, cleaning, and servicing the table.
ELECTRICAL SYSTEM
NOTE: Electrical/electronic circuit diagrams are
provided at the end of this Manual in section 6 (see
index page 33).
Main Control Board
4.8 The main control board receives signals from
the hand control via an RS485 serial communication
link. The board also receives signals from the
footswitch, base cover switches, levelling
microswitches, tilt switch, opto boards, standby unit
socket, door switch and table on/off controls.
4.9 Outputs from the main control board pass
to the hand control via an RS485 serial
communication link, to the hydraulic solenoids via the
top-of-column distribution and solenoid boards, and
to the base distribution board, motor on/off control
and motor direction control. The main control board
is supplied with 24V d.c. from the batteries and
generates its own 12V d.c. and 5V d.c. supplies.
4.10 The principal functional areas of the main
control board are:
- Input buffering (pull-up and pull-down resistors
and capacitors).
- The microcontroller, which uses software to
implement table control functions.
- Output buffering (current drivers and le vel shifters).
- Motor direction dr ive and on/off control.
Height Opto Board
4.11 The height opto board is fitted at the base of
the column in a fixed position relative to the baseplate .
It responds to a metal reflector plate which moves up
and down with the column chassis and hence with
the table top. When the reflector mo ves in front of the
three reflective opto sensors (only two are used)
electrical signals are generated to signal to the main
control board that the table is at or above ‘minimum
height’, or in the ‘castor’ position.
4.12 When the reflector plate is in front of reflective
opto coupler 01 and at the correct distance from it, a
signal is produced which passes via J1 on the opto
board and the 10-way ribbon cable to J22 on the main
control board.
4.13 When the reflector plate is in front of both
reflective opto couplers 01 and 03 signals from both
pass to the main control board which stops the table
movement at the correct position.
Tilt Opto Board
4.14 The tilt opto board is fitted at the top of the
column in a fixed position relative to the y oke. It responds
to a metal plate which moves with the yok e and hence
with the table top. When the reflector moves in front of
the opto sensors electrical signals are generated to
signal the main control board that the table is lev el.
4.15 When the reflector plate moves in front of the
opto sensor, a logic signal 0 is produced which passes
via J1 on the opto board to the top of column
distribution board and then via a 10-way ribbon cable
to J2-4 on the main control board.
4.16 When the reflector plate is not in front of the
opto sensor, a logic signal 1 is produced which is
passed to the main control board as above.
T-SM13h 7/40
4. INTRODUCTION
Base Distribution Board
4.17 This board receives signals from the main
control board for the height (extend) solenoid, the
height (contract) solenoid, the pump-isolate (forw ard)
solenoid and the pump-isolate (reverse) solenoid.
4.18 The board also passes signals to the main
control board from the cover microswitches .
4.19 Any inductive ov erswings from the solenoids
are blocked by diodes Dl to D4. PL7 on the base
distribution board is connected via a 14-way ribbon
cable to J4 on the main control board.
Top-of-Column Distribution Board
4.20 This board connects to J2 on the main control
board via a 34-way retractable ribbon cable which
terminates on PL1 of this board. It distributes signals
to 10-way hand control/footswitch sockets PL2 and
PL3, and to:
G the tilt switch via PL7
G the Trendelenburg level position microswitch
via PL5
G the lateral tilt opto board via PL4
G the break level position microswitch via PL6
G top-of-column solenoids board via PL8
G table ON/OFF switch via PL9
Top-of-Column Solenoids Board
4.21 This board receives signals on J7 via a 10way ribbon cable from J8 on the top-of-column
distribution board to drive the top-of-column solenoids
via cage clamp connectors J1 to J6. It also blocks
inductive overs wings from solenoids using diodes D1
to D6.
Power Circuits
4.22 The power source for the table are two 12V,
24Ah sealed lead acid batteries connected in series.
A 30A in-line, high current fuse protects the batteries,
motor, FET’ s , rela y and interconnections. The fuse is
fitted on a panel in the table base.
4.23 Current from the batteries passes via the
reversing rela y , where it is s witched by the FET’ s, and
then passes to the pump motor and returns to the
batteries. The 24V d.c. supply is also routed to the
hydraulic solenoids and the main control board.
Hand control
4.24 The RX500 hand control communicates with
the main control board via an RS485 serial
communication link. The hand control contains a
microcontroller which receives inputs from the hand
control buttons and generates outputs which go to
the hand control LED’s and the hand control audib le
warning device. The microcontroller uses software to
implement hand control, control functions.
4.25 The hand-control incorporates a 2-digit display
that indicates a code if a problem should occur. Such
problems could be the result of the user pushing a
button in the wrong sequence or at the wrong time or
of a system failure (see Table 1 - Fault Diagnosis,
Ta ble 2 - Codes for 2-Digit display and Fig. 27)
Footswitch (Optional Accessory)
4.26 The footswitch plugs into either of the two 10way sockets used by the hand control. It uses the
same +5V d.c. and 0V pins, but the signal lines are
different from those of the hand control. The f ootswitch
does not use a serial communication link.
4.27 There are four functions on the footswitch:
G Height up
G Height down
G Trendelenburg
G Reverse Trendelenburg.
4.28 Each of these f our functions is associated with
two microswitches mounted inside the body of the
footswitch, one normally open and the other normally
closed. The normally open microswitch for each
function is connected on one side to the +5V d.c. line
and on the other side to a common ‘alarm’ line. The
normally closed microswitch for each function is
connected on one side to the 0V line and on the other
side to an individual input line on the main control
board. If , for any function of the f ootswitch, e .g. height
up, the normally open microswitch operates and the
normally closed microswitch does not, or vice versa,
the main control board will recognise a fault and freeze
the table. The likelihood of two microswitches failing
at the same time is very remote.
Table Base ON/OFF Control
4.29 An ‘on/off’ toggle switch, fitted on the top of
the table column, switches 24V d.c. on the main
control board. To isolate the system the 30Amp fuse
should be removed.
8/40 T-SM13h
4. INTRODUCTION
RX500RX500
RX500
RX500RX500
OPERATION TABLE
Built-in Battery Charger
4.30 This is a low current output ‘trickle’ charger
which replenishes an average day’s table use of the
batteries with an overnight charge.
4.31 The mains input comes via the mains lead,
which should be fitted with a fused plug. The output
of the charger is regulated to provide 27.6V d.c. to
the batteries for float charging. This voltage will fall
when the batteries are not completely charged and
hence are drawing a significant current. The charger
has short-circuit and thermal protection. There is an
output from the board which supplies current to the
batteries, an output to the ‘trickle’ charger indicator
LED and an input from the external charger. Current
from either the internal or the external charger is
routed to the batteries via the ‘trickle’ charger board.
External Battery Charger (Optional Accessory)
4.32 The external battery charger plugs into the
external battery charger socket in the table base and
supplies current via the ‘trickle’ charger board to the
batteries.
Standby System Connections
4.33 An RX Standby Unit (optional accessory)
which provides standby hydraulic and electrical
services, can be connected to the RX500 table via
hydraulic connectors and an electrical socket behind
the door on the table base (short trunk section end).
4.34 Next t o the h ydraulic connectors are two pushbuttons which release stored hydraulic pressure when
the standby hydraulic connections are made. This is
done by energizing the pump forward and reverse
solenoids with power from the standby unit.
4.35 To connect the standby unit to the table it is
necessary to open the base door. This operates a
microswitch which disconnects the main control board
solenoid control circuits from the solenoids so that
they can be controlled by the standby unit, also the
pump motor is hydraulically isolated from the hydr aulic
solenoids. The electrical signals from the standby
socket pass to J1 on the main control board (15-wa y
D-connector).
T-SM13h 9/40
5. DESCRIPTION
For greater detail of
the table base ends also
refer to Fig. 4 and 5
Fig. 2 RX500 Operation Table : Base details, covers on and off
10/40 T-SM13h
5. DESCRIPTION
Key to Figs 2 and 3
RX500RX500
RX500
RX500RX500
OPERATION TABLE
1. Short trunk assembly
2. Long trunk assembly
3. Lateral tilt cylinder
4. Wrap around
5. Tr unk assembly plastic covers
6. Wedge
7. Outer column
8. Battery
9. Manifold block No 1
10. Castor plate guide pillar
11. Hydraulic power unit
12. High current fuse, 30A
13. Mains socket
14. Battery charging LED (green)
15. Cover retaining screw location
16. External batter y charger socket
17. Drip gutter
27. Base distribution PCB
28. Castor frame assembly
29. Manifold block No 2
30. Door microswitch
31. Standby power pack connector
32. Standby hydraulic connectors
33. Push buttons to engage standby
hydraulic connectors
34. Hydraulic reservoir
35. Ribbon cable reel assembly
36. Top-of-column distribution PCB
37. Hinge
38. Lateral tilt opto board
39. Yoke
40. Cover microswitch
41. Table ‘on/off’ switch
42 Base seal
18. Opto reflector plate
19. Inner column
20. Manifold block No 4
21. Manifold block No 3
22. Upper bezel
23. Cable from hand control
24. Trendelenburg cylinder
25. Break cylinders
26. Main control PCB
43. Column seal
44. Long trunk base cover
45. Short trunk base cover
46. Telescopic column cover
47. Column upstand
48. Antistatic discharge path resistor
49. Base cover spring support
50. Base foot
51. Base skirt
T-SM13h 11/40
5. DESCRIPTION
Fig. 3 RX500 Operation Table : Column and trunk section detail
12/40 T-SM13h
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