Eschmann MR, MRS User manual

MR & MRS

OPERATION TABLE

manual Service

699255	T-SM5f

Preliminary

Technical data

Safety notes

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 located on the pedestal as indicated.

Service Manual

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, Peter Road, Lancing, West Sussex, 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.

Trade marks

“MR” and “MRS” areadetr marks of Eschmann Holdings Limited.

All rights reserved. This booklet is protected by copyright. No part of it may be reproduced, stored in a retrieval 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, however, 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-SM5f November 2001

MR & MRS OPERATION TABLES

READ THESE INSTRUCTIONS BEFORE USE

Keep these Instructions in a safe convenient place for future reference. Read in conjunction with the relevant Publications detailed in the preliminary information section.

CONTENTS

		Page
1. PRELIMINARY .. .. .. ..		..	4
2. TECHNICAL DATA .. .. ..		..	5
3. SAFETY NOTES .. .. .. ..		..	6
4. MAINTENANCE .. .. .. ..		..	7
General	.. .. .. .. .. ..	..	8
Cleaning, disinfection, care and storage		..	8

Periodic lubrication, checks & adjustment .. 8


Base Components .. .. .. .. ..						8
Castors and wheels .. .. .. .. ..						8
Brakes and brake mechanism .. .. ..						8
Hydraulic cylinder .. .. .. .. ..						8
Gears	.. .. .. .. .. .. ..					10
Hinge pin and nut .. .. .. .. ..						11
Lateral screw and nut		.. .. .. ..				11
Trend. screw assembly friction collars ..						12
Chair and Break screw assembly .. ..						14
Control arm - cable type .. .. .. ..						14
Control arm - gas spring .. .. .. ..						14
Emergency operation - MRS only .. ..						16
Head / Leg section and catches				.. ..		16
Fault diagnosis and remedies			.. .. ..			17
Excessive rotational movement of table top						17
Inability to raise table top .. .. .. ..						17
Table top not maintaining height .. ..						18
Operation table will not lower .. .. ..						18
Failure of control arm cable .. .. ..						20
Control arm - gas spring .. .. .. ..						20
Removal & installation of components					..	20
Replacement of trend, screw .. .. ..						20

Removing hydraulic cylinder from base .. 21

Replacing ram cup washer	.. ..	..	21
Removing and cleaning ball valve ..		..	21
Changing hydraulic oil .. .. ..		..	21
Replacing control arm cable .. ..		..	22
Replacing an antistatic wheel in base		..	22

				Page
Replacing castor	.. .. .. ..			..	22
Replacing worn brake pad		.. ..		..	22
Replacing brake quadrant .. .. ..				..	23
Replacing quadrant pinion		.. ..		..	23
Replacing broken quadrant pillar ..				..	23
Replacing main control handle			..	..	23
Replacing push-button catches.. ..				..	24
Replacing fine control handwheel ..				..	25
Replacing release handle/bar (old) ..				..	25
Replacing release handle (head new)				..	27
Replacing release bar (leg new)			..	..	28

Replacing gas spring (head/leg section) .. 28

T-SM5f

Page 3 of 29

Part 1

MR & MRS OPERATION TABLES

1.PRELIMINARY INFORMATION

1.1These Instructions for Use should be referred to for details of the MR and MRS general purpose, foursection, mobile, operation tables, REF 80-085-15, 80-085-63 and 80-081-16 (serial numbers MRAB8E0000, MRRB8E0000, MSAB8E0000 respectively, or above) and fixed base MR tables 80-085-92 and 80-085-96. Information is also provided for earlier versions (within each section) if applicable.

1.2This Manual covers both the MR and the MRS operation tables. The controls for the MRS tables are fitted on an adjustable, extended control arm. There are two versions of the control arm which are both described, however the later version only is now available. The MR table is also available in a reduced height version.

1.3Instruction and Service Manuals should be readily accessible for reference prior to and when operating, cleaning and servicing the Operation Table. All manuals are available from Eschmann Equipment, see inside front cover for address details.

Related Technical Publications:-

Instruction for Use - MR and MRS Operation Tables - T-IM18

Illustrated Parts List - MR and MRS Operation Tables - T-IPL6

1.4MR and MRS Operation Tables comply with BS6859 Part 1: 1987 (except for clause 7).

1.5Fixed base tables should be serviced as conventional tables but check that the floor fixings are secure on a regular (three month) basis, also check the antistatic resistor for function and connection and replace the base seal if it becomes damaged..

Oil filler cap

Fig. 1 MR Operation Table : General Arrangement

Fig. 2 MRS Operation Table : General Arrangement

Page 4 of 29

T-SM5f

MR & MRS OPERATION TABLES

Part 2

2. TECHNICAL DATA

DIMENSIONS AND MOVEMENTS

TABLE LOADING

Retention of Adjusted Height: The table will retain its adjusted height with a load of 135kg uniformly applied to the trunk sections.

Longitudinal Deflection Load: The table will withstand a load of 50kg applied at a point 150mm in from either end of the head or leg section.

NET WEIGHT (approx) 196kg

X-RAY ATTENUATION

The X-ray attenuation of the top of this operation

table is equivalent to less than 0.5mm of 99.5%

pure aluminium.

T-SM5f

Page 5 of 29

Part 3

MR & MRS OPERATION TABLES

3. SAFETY NOTES

Attention to the following points will prolong the life and efficiency of your operating 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 the table.

♦Check that the leg section is secure, and put the table base in the brake position before use.

♦Raise the table top fully before washing the table, to expose all the ram covers surface.

♦Read and follow the instructions for cleaning, and for the care of the mattresses and pads.

♦Use the correct mattress and accessories.

♦Service the table and accessories regularly.

♦Remove table accessories and their clamps, in particular rotary clamps from side bars, when they are not in use.

DO NOT:

♦Lift the table by its top.

♦Push the table over rough surfaces, use a trolley.

♦Drop the table (or individual sections) when transporting it.

♦Put heavy weights on the table sections.

♦Put sharp objects on, or against mattresses, pads, or the radiographic table top.

♦Drop heavy objects onto the radiographic top.

♦Spill oil, ether, or other chemical fluids onto the mattress or the pads.

♦Pull the table by the head or leg section, always push it.

♦Exceed maximum table loading

WARNINGS

The MR and MRS Operation Tables have 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.

The MR and MRS Operation Tables have been designed for patients weighing up to 135kg with their centre of gravity (normally the perineum) over the base. However patient positioning and additional loads can compromise table stability. Ensure that loading does not compromise table stability.

With the table in (or during transition into) the castor position, the centre of gravity of the patient (normally the perineum) should lie over the centre of the column . 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). Take extreme care when moving a table with a patient on and ensure that the table is at minimum height

The patient’s weight should be supported whenever the sections are adjusted or removed from the table during repositioning.

The head and leg sections are designed to support and position the appropriate part of the patient’s weight only. Damage leading to failure of the section may be caused if excessive weight is applied. Also do not sit or lean on the control arm of the MRS table.

The maximum loading weight of 10kg must not be exceeded for the Detachable ophthalmic head flap and the Non-Detachable head flap accessories, as this may cause damage to the accessory and could result in injury to the patient.

It is necessary to check at regular intervals for wear, corrosion, material fatigue and ageing on all accessories which support all or part of the body of the patient using a single gas spring. Such accessories are the detachable ophthalmic head-flap and head-flap.

Page 6 of 29

T-SM5f

MR & MRS OPERATION TABLES

Part 4

4. MAINTENANCE

1	Head Section	9	Height Control Pedal
2	Upper Trunk Section	10	Base Control Pedal
3	Lower Trunk Section	11	Cylinder Locking Lever
4	Leg Section	12	Main Control Handle
5	Quick-release Bar (Leg Section Angle)	13	Gear Lever
6	Release Button, L.H. (Leg Section)	14	Release Button, R.H. (Head Section)
7	Oil Filler Cap	15	Quick Release Bar (Head Section Angle)
8	Base

Fig. 3 MR Operation Table : Part identification and controls

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Page 7 of 29

Part 4

MR & MRS OPERATION TABLES

4. MAINTENANCE

GENERAL

4.1 The information provided in this Service Manual falls into four categories:

♦Cleaning, Disinfection, Care and Storage.

♦Periodic lubrication, checks and adjustments

♦Fault diagnosis and remedies

♦Removal and installation of components

CLEANING, DISINFECTION, CARE AND STORAGE

4.2 For Cleaning, Disinfection, Care and Storage instructions refer to Section 8 of the Instructions for Use (Publication T-IM18, also see section 1.3).

PERIODIC LUBRICATION, CHECKS AND ADJUSTMENTS

Base Components

4.3 In order to carry out maintenance procedures to the table base, it is necessary to tilt the table on its side and expose the underside of the base. Proceed as follows:

iRemove the head and leg section in the normal manner (see Instruction for Use, Publication T-IM18).

iiRaise the table top to its maximum height.

iiiPlace an anaesthetist’s stool, or similar strong support, alongside the table.

ivPlace the brake pedal in the ‘castor’ position.

vStand on the same side of the table as the support but with the pump lever on the opposite side. Push the table away about 30 cm and then pull it back. This ensures that all the castors are pointing away from the operator. Two people on the same side of the table as the support (one at each end) can now each place a foot against the base and lever the table over gently, lowering it onto the support.

Castors and wheels

4.4. Clean each castor (see Fig. 5) and wheel free of debris, then lubricate the castor and wheel ball races with a light machine oil (or WD40 aerosol lubricant).

Brakes and brake mechanism

4.5. Check the action of the brake mechanism (see Fig. 5) and also check for wear on the brake pads, broken brake pinion or quadrant teeth, play in the quadrant taper pins and adjustment between quadrant, roller and eccentric pin. Check stop screws for wear. To replace quadrant see section 4.44; to replace quadrant pinion, see section 4.45.

4.6 Fit new brake pads where necessary, referring to section 4.43.

Hydraulic Cylinder

4.7 Raise the table top to its maximum height, then depress the height adjustment (hydraulic pump) pedal fully and check for smoothness and rate of descent.

Fig. 4 Ram key adjustment

4.8Raise the table top to its maximum height again and release the ram cover securing screws at the top. Refer to Fig. 4 and lower the 3-section telescopic cover (1) to expose the ram (2) and ram key (3).

4.9Remove the ram key, clean out keyway and refit key.

4.10Examine ram surface for rust and, if present, clean off with fine emery cloth. (Note: Later rams have a black surface coating do not confuse this with rust and attempt to remove it). Lubricate exposed surface of ram. Seal the top of the cylinder with cloth wound round the ram to prevent damage if using emery cloth.

Page 8 of 29

T-SM5f

MR & MRS OPERATION TABLES

Part 4

4. MAINTENANCE

DETAIL C

1.	Base casting	8.	Wheel spindle	15.	Oil sump
2.	Base cover	9.	Base control pedal	16.	Roller
3.	Castor frame	10.	Brake pad screws	17.	Quadrant securing nuts
4.	Castor	11.	Brake pad	18.	Brake shaft collars
5.	Castor mounting screw 12.		Stop screw	19.	Eccentric pin
6.	Wheel	13.	Pinion	20.	Quadrant pillar
7a/b. Grub screws		14.	Quadrant
		Fig. 5 Base assembly

T-SM5f					Page 9 of 29

Part 4

MR & MRS OPERATION TABLES

4. MAINTENANCE

4.11Before refitting ram cover, check that table will raise and lower smoothly. If this is not the case, the ram key is probably secured too tightly. Release the key attachment bolts (4) slightly to remove excessive friction, then retighten.

4.12Check for signs of oil leaks. If table will not pump to its full height, refill reservoir with the Eschmann oil supplied with the table, in small measures, lowering the table after each addition. This will avoid the risk of introducing too much oil into the hydraulic system.

Gears

4.13 Check function of gear selector lever in conjunction with main control handle and ensure that each table top movement is satisfactorily achieved. Check to see if there is any excessive play in table top in any particular direction (see section 4.14 and 4.15). This applies particularly to the two grub screws (4, Fig. 10) securing screwed bush to screw housing on Trendelenburg and Break screw assemblies. Check friction collar adjustment on Trendelenburg and Break screw gears (see sections 4.16-4.19); also check that

1.	Main control handle	9.	Pivot gear, lateral tilt
2.	Gear selector lever	10.	Drive gear, lateral tilt
3.	Selector shaft	11.	Gear shaft
4.	Trendelenburg idler gear	12.	Drive gear, break
5.	Break idler gear	13.	Drive gear, Trendelenburg
6.	Gear selector unit	14.	Trendelenburg screw and gearbox
7.	Selector gear, lateral tilt	15.	Break screw and gearbox (right hand)

8.Break screw and gearbox (left hand)

Fig. 6 Gearbox of MR operation table

Page 10 of 29

T-SM5f

+ 22 hidden pages

Replacing gas spring (control arm) ..		..	28
Hydraulic system operation notes	..	..	28
ILLUSTRATIONS
Fig.1 MR Operation table (G.A.)	..	..	4
Fig.2 MRS Operation table (G.A.) ..		..	4
Fig.3 MR table - Parts and controls ..		..	7
Fig.4 Ram key adjustment .. .. ..		..	8
Fig.5 Base assembly .. .. .. ..		..	9
Fig.6 Gearbox of MR table .. .. ..		..	10
Fig.7 Hinge pin and nut adjustment ..		..	11
Fig.8 Lateral screw and nut adjustment		..	11
Fig.9 Releasing Trend. screw assembly		..	13
Fig.10 Trendelenburg screw assembly		..	13
Fig.11 Control arm (early MRS table)		..	15
Fig.12 Removing hydraulic cylinder ..		..	15
Fig.13 Hydraulic cylinder assembly ..		..	16
Fig.14 Ram release mechanism .. ..		..	17
Fig.15 Control arm cable replacement		..	19
Fig.16 Replacing a control handle	..	..	24
Fig.17 Catch mechanism for leg section		..	24
Fig.18 Head section without gas spring		..	25
Fig.19 Head section with gas spring ..		..	26
Fig.20 Control arm with gas spring ..		..	27
Fig.21 Hydraulic system operation ..		..	29