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Eschman T-20 O/R Table Service Manual

1. Fig A2 T20 a Schematic diagram Pedestal Section T SM47j P52 54 uva 9 NOS 622011 E 0 0 91 SH3HLO aM NMOHS S3HIM HAAISOS4 g AD ul VOd 2 39NvHO 30 39nv9 13 AU3LLV8 E og 3AnvW har Mie 5 2 2 uva 91 MOTA 622011 S
2. HLHV3 voeL SISSVHO i 1709 7331 6631 16 189111 YYOL AZL N 189111 AZL AH3LLVE e Ii eN NOR HN 3i OL SV AS 1 alvid3sva alvid HOLSYI 145 AH3 LLV8 NIV Fig 20 Schematic diagram Base Section P53 54 T SM47j ESCHMANN APPENDIX 4 ELECTRICAL SAFETY CHECKS WARNING These electrical safety checks should only be undertaken in the following sequence The following three electrical safety checks should be undertaken after all maintenance procedures have been completed with the covers on and the table in a ready for use condition 1 0 PAT testing 1 1 The table should be tested to ensure it conforms to the current requirements for PAT Portable Appliance Testing tests as detailed in the Eschmann Service Schedule No 2011 2 0 Antistatic path resistance 2 1 antistatic path resistance should be measured using a Megger tester switched to the 500V range as follows 2 2 Connect one probe of the Megger to a side rail of the table and the other probe of the Megger to the surface of a castor wheel of the castor assembly to which the antistatic resistor is connected The reading should be 6 6MQ 10 2 3 Connect one probe of the Megger to a side rail of the table and
3. pepeeu pp pepeeu JOSUAS 9 11 9X0 J9M07 JeBueu eyoA apis Owed pue owed Alqwasse punoJdeJA sowed pue y 550 ON Hed esf 9 0N Fig 6 3 Table column general arrangement P31 54 T SM47j Reassemble table see note below by reversing the above noting use of grease and threadlock in the sections referred to and the warning at the top of this section Check Appendix 2 and proceed as detailed in the Application software manual before replacing covers Finally test all table functions Note When replacing the wrapround assembly tighten the four M10 screws use of 4 x M10 spring washers now preferred to threadlock but do not torque Apply threadlock part number 670650 to the four slide bearing screws at the lower edge of the wrapround Then whilst pushing the wrapround diagonally so that it is firmly pressed against all four bearing pads tighten the four slide bearings screws Finally torque the four M10 screws to 40Nm 6 4 5 Tilt and Trendelenburg actuator motor To replace a Trendelenb
4. Maximum cranially Table in normal orientation Sig Fig 2 2 Maximum patient weight v table position graphs T SM47j P11 54 The graph indicates the maximum patient weight that can placed on the table when adjusted as shown with their centre of gravity normally the umbilicas positioned relative to the table as indicated In these examples the maximum patient weight is approximately 300kg and 215kg Maximum traverse caudally Table head and In both graphs the shaded 222 area of the chart indicates the safe working zone Table head and leg sections reversed Fig 2 3 Maximum patient weight v table position graphs P12 54 T SM47j 3 0 DESCRIPTION See Fig 3 1 Appendix 3 for schematic diagrams 3 1 Power supply assembly This assembly Part number 111765 which is located in the table base has no user serviceable parts and must be changed as a complete unit The assembly includes a Battery charger loom a Battery charger module a Battery management PCA a Battery connector loom a Chassis plate two Battery support brackets a Switch two Fuses 32 x 6 35mm
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6. 120 a OPERATION TABLE 111707 T SM47j OESCHMANN Preliminary Information Technical data Technical description Safety notes Maintenance Part removal adjustment replacement Read these Instructions before use Keep these Instructions in a safe convenient place for future reference Read conjunction with the Publications detailed in Section 1 1 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 enquiries 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 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 Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 765040 Fax 44 0 1903 875711 Overseas Customers Contact your local distributor In case of doubt contact Eschmann Equipment Patents and Trade marks The ESCHMANN name and logo are registered trade marks of Eschmann Holdings Limited Eschmann Equipment is a trading name of Eschmann Holdings Limited
7. 6 5 2 2 Traverse drive belt To replace traverse drive belt proceed as follows noting comments for later tables vi vii viii Place the table into the Service position as detailed in section 1 9 noting safety warnings to gain access and remove the bottom cross beam cover item 17 of Fig 6 7 Remove the two M10 set screws in the break attachment blocks items 11 and 14 of Fig 6 5 clamping the ends of the lead screws By turning each lead screw or by moving the drive belt wind lead screws out of the traverse nuts item 8 Fig 6 7 towards the head end long trunk Note that dome plugs will be ejected from the attachment blocks Slacken the two 8 locking nuts to release the belt tension as much as possible not necessary on later tables Note the path of the drive belt shown in Fig 6 7 Remove two M6 socket head screws securing the motor support posts to the traverse crossbeam assembly item 1 of Fig 6 7 Slide motor assembly away from the cross beam to free the drive belt Remove the head end long trunk end limit switch pins item 11 of Fig 6 7 Remove the traverse nut housings item 9 of Fig 6 7 one at a time Release the old drive belt and reassemble each traverse nut housing with the new drive belt ensuring correct orientation of parts bearings should have the text facing out Loosen the traverse motor assembly belt tensioners not necessary on later tables and replace t
8. 33 6 5 1 2 Gassprings 33 0 5 1 3 TOP COVED 2 RR ee es 33 6 5 1 4 Gasspringrelease head pin 33 6 5 1 5 Gas spring release handle 35 6 5 1 6 X ray translucenttop 35 6 5 2 Trunk sections 35 6 5 2 1 Traverse motor 35 6 5 22 Traverse drive belt 36 6 5 2 3 Break motor 36 6 5 2 4 Breakgearbox 36 6 5 2 5 Siderails 39 6 5 2 6 Topcovers 39 6 5 2 7 Push button components 39 6 5 2 8 Traverse rod bearing 39 6 5 2 9 Drive belt guide bearing 41 6 5 2 10 Attachment blocks 41 6 5 2 11 Blacktops 41 Electrical components 41 6 6 2 Three actuator 42 6 6 3 Fouractuator PCA 42 6 6 4 Infrared receiver 42 6 6 5 Power assembly 43 6 6 6 Traverse motor 43 continued over page P3 54 ESCHMANN 6 6 7 Break motor 43 6 6 8 Tiltand Trendelenburg motors 43 6 6 9 Telescopic column assembly 43 6 6 10 Break potentiometer loom 43 6 6 11 Tilt potentiometer loom 43 6 6 12 Trendelenburg potentiometer 43 6 613 Height potentiometer loom 43 6 6 14 Traverse motor loom am
9. 4 13 24 23 22 NOTE The table illustrated has external pedal locking catches Some tables have internal locking catches see section 6 2 and 6 3 for details 1 Fig 1 0 Identification of main parts P6 54 T SM47j Key to Fig 1 0 Head section Long trunk section Short trunk section Leg section Leg section gas spring Short trunk section release button Long trunk section release button Battery fuses Wheel foot pedal Head section release bar Head section gas spring Standby control panel Base Pedestal Castor foot pedal Leg section release bar Mains fuses Connection socket for mains ONLY use Eschmann mains cord Part No 391177 Main battery charging state LED Red on batteries in bulk charge Amber Mains on batteries in top up charge duration 2 hours Green on batteries in trickle charge i e fully charged Standby battery charging state LED colour code as main battery above Main table On Off switch Off On Connection socket for Eschmann footswitch ONLY Table On LED green Bright in use micro controllers active Dim Table ready for instant use but in battery save sleep mode 24 Connection socket for Eschmann handset ONLY 25 Head and leg section end blocks use to stow UK handset 26 Accessory side rails can also be used to stow handset 27 Standby battery switch Cli
10. 20 is a trade mark of Eschmann Holdings Limited Patents Worldwide Patents Pending Copyright 2005 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 The CE marking affixed to the product certifies that it complies with the 0473 European Medical Devices Directive 93 42 EEC and related legislation T SM47j July 2005 0473 5 1 0 Preliminary information 1 0 Preliminary information 5 2 0 Technical data 2 1 Weights meg aah need east 8 22 Dimensions 8 2 3 Movements 8 24 Tableloading 8 25 Electrical 8 2 6 Classification and symbology 9 2 7 Use in conjunction with other equipment 9 2 8 Standards compliance 9 2 9 Environmental conditions 9 3 0 Technical description 3 1 Powersupply assembly 13 3 2 Control electronics 13 3 2 1 Ov
11. Remove both the pivot pins and the faulty damper v Replace the damper with a new unit piston end to the pedal anchor block end not the damper angle bracket end When replacing pivot pins apply grease part number 110477 and ensure the piston spring clip is in the correct orientation as noted in iv above T SM47j vi vii Compress or extend the damper length manually to enable the damper angle bracket to be secured back onto the base plate using threadlock part number 670650 on the screw threads Reassemble table by reversing the above replace covers as section 6 2 2 2 and check table base function 6 3 4 Front wheels To replace a front wheel in the event of wear or damage refer to Fig 6 2 and proceed as follows Ensure both pedals are in the raised position Remove the appropriate base cover as detailed in section 6 2 2 1 Replace the castor pedal see note in 6 2 2 2 iv and raise the table onto its castors at the short trunk end Remove the screw from the wheel its axle and remove the wheel Replace the wheel with a new one and replace the screw using threadlock part number 670650 on the screw thread Tighten the screw until the wheel tread guards have been clamped reducing any lateral play to a minimum Remove castor pedal replace covers as 6 2 2 2 reattach castor pedal see note in 6 2 2 2 iv and check table base function 6 3 5 Castors 6 3 5 1 Castor assembly To replace a castor a
12. c Remove the ring crimp terminals of the loom where they connect to the connector block noting connection annotation R O Y B for reconnection d If replacing the loom disconnect it from the four actuator PCA and connect the new loom back as found If replacing the lower connector block release the two M8 screws to remove it replace the new block and remake the ring crimp connections iii Reassemble the table and carry out a full table function test 6 6 16 Switch and accessory panel looms To replace either of these looms proceed as follows i Release the top of the bellows as detailed in 6 2 3 5 ii the connections from the PCA and then from inside the bellows release the retaining screws to remove the switch or accessory panel loom iii Replace the required loom reassemble the table and carry out a full table function test 6 6 17 Column energy chain and loom To replace a column energy chain and loom item 10 of Fig 6 8 proceed as follows i Gain access to the lower column by lifting the telescopic covers as detailed in section 6 2 3 2 then remove the base covers as detailed in section 6 2 2 ii Remove the two remaining connections coming from the bottom of the column energy chain loom where they join the mains panel and the power supply assembly Note that the other two connections to the infrared PCAs were removed when taking off the covers iii Remove the single connection coming from the top
13. 26 6 2b Table base general arrangement int l catch 27 6 2c Table base general arrangement int l catch andincreasedheight 28 6 3 Table column general arrangement 31 6 4 General arrangement head amp leg section 34 65 Tablelongtrunk general arrangement 37 6 6 Tableshorttrunk general arrangement 38 6 7 Tabletraverse general arrangement 40 6 8 Table base main electrical components 42 6 9 Handset button functions and seriallabels 44 6 10 Old and new infrared Handset buttons 44 1 T20 aSchematic diagram Base Section 51 A2 T20 a Schematic diagram Pedestal Section 52 T20 aSchematic diagram Trunk Section 53 Appendix 1 Torque conversions 49 Appendix 2 Application software guide Appendix 3 T20 a Table schematics Appendix 4 Electrical safety checks 54 T SM47j 1 0 PRELIMINARY INFORMATION WARNING Before servicing this operation table the engineer should be familiar with all the warnings and cautions contained within the Instructions for use detailed in section 1 1 This service manual does not provide details of how to operate the table nor does it provide information on the symbols and warning signs provided on the table All this information is in the Instructions for use supplied with the table Additional copies of the Instructions for use
14. WOO1H313WOLLN31Od x v3u8 Avaya WOO Avaya WOO H313WOLLN31Od Avaya Fig A1 T20 a Schematic diagram Trunk Section P51 54 T SM47j 30 HLYVa NWITTOO 3AVH LIL 1 cx x een a ND H3MOd 169011 asva HOLIMS Eu En LLL 7 __ ae N 5 v E 2 E 2 E Le Xd z amp zsu 21110068 12 l3SQNVH KLzezsu NOLLOHIO 9MS NOISNVdX3 it Ast B 8 zi ATIVONVO ATIVINVHO 3SH3AVHL SMS 5 af 5 TANVd 6 3g AO 4 YMS 3QIUU3AO 8 HO1IMS1003 9 E r 2 u 2 LIIL EMS HOLIMSLOOJ 13SANVH 9 9 4 er 5 Em 5 LHOISH ZMS E NMOG 1HOI3H 4 21995 HOLIMSLOOA LHOI3H 2 3SH3A3H ON3HL LMS 2 2 2 AGE n SHOSS300Hd Lm E 1119 VOd OND e L YOLVNLOV VOd 7 i 7 7 7 7 7 7 aM 66 noo OL zar
15. 20A T type two Fuse holders two battery pairs and all connections cable ties and screws etc 3 2 Control electronics 3 2 1 Overview The control electronics for the T20 a is distributed between two the 4 actuator and the 3 actuator PCA These two PCA s contain three distinct microprocessor daughter PCAs two on the 4 actuator PCA and one on the 3 actuator PCA The 4 actuator PCA 111524 is located on the column and includes the main controller and the 4 actuator controller Each of these controllers consists of a microprocessor daughter PCA 111526 which have their control electronics on the 4 actuator PCA The Three actuator PCA 111525 is located in the long trunk section of the table and contains the 3 actuator controller another microprocessor daughter PCA 111526 with its control electronics on the Three actuator PCA 3 2 1 1 The daughter PCAs consist of a Motorola MC68HC912B32 micro controller a watchdog circuit an RS232 line driver and an SPI UART and RS485 line driver All the micro controllers on the T20 a require these components The RS232 communications can be used to provide a telemetry link to custom software running on a PC Once fitted to their respective controller boards the micro controllers are programmed with the appropriate software application There is a main controller application 110442 and an
16. 4 Telescopic covers 23 6 241 Removal of telescopic covers 23 6 2 4 2 Refitting the telescopic covers 23 6 2 5 Bellows 23 6 251 Removal ofthe bellows 23 6 2 5 2 Replacing the bellows 24 Table base components 24 0 3 2 Batlefles 522225 Pe OSs edad aad 24 6 3 3 Pedaldampers 24 6 3 4 Frontwheels 25 6 3 5 Castors ee ac 25 6 351 Castor assembly 25 6 3 5 2 25 6 3 6 25 6 3 7 Castor pillar bushes 29 6 3 8 Pedalspindlebushes 29 6 3 9 Lifting roller assembly 29 6 3 10 Pedalcatch block 29 6 3 11 Pedalanti skidpads 29 6 3 12 Pedal catch pawl and spring 29 Table column components 30 6 4 2 Trendelenburg actuator 30 6 4 3 Tiltactuator 30 6 4 4 Telescopic column assembly 30 6 4 5 Tilt amp Trendelenburg motor 32 6 4 6 Tiltbush 32 6 4 7 Trendelenburg bush 32 6 4 8 Bearingpads 32 Table sections 33 6 5 1 Headandlegsection 33 6 511 Guidepins
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18. access fuses inside the covers remove and replace the covers as detailed in section 6 2 6 6 21 Table infrared code change 6 6 21 1 Itis possible to reprogram the identifier code of the table to match that of any handset using a combination of button presses proceed as follows Press and hold button B16 of Fig 6 10 ii Whilst continuing to hold button B16 press and hold button B17 of Fig 6 10 There must be a short gap between these button presses and do not try to push them together or in the reverse sequence as this will not work iii Continue to hold both buttons B16 and B17 until the hand control LED item 22 Fig 1 0 comes on and then release the buttons The LED will stay on for 2 seconds to indicate that the table identifier code now matches the handset Test that the table responds correctly to the handset iv Write the new identifier code i e the infrared handset identifier code on the serial label of the table in the space provided see Fig 6 9 deleting the original one 6 6 22 Infrared handset code change 6 6 22 1 It is possible to change the identifier code of the infrared handset to match that of any table obtain Service Kit Part No 111040 or 111745 see Note in section 6 6 19 2 and proceed as follows Follow 6 6 19 2 i to gain access to the handset PCA ii Locate on the PCA the two switches controlling the infrared code These should be set to match the code on the units labe
19. actuator controller application 110443 Both the 4 actuator and 3 actuator are programmed with the same actuator controller application 110443 A configuration file is then downloaded to each micro controller that specifies which controllers are present on which board It is possible to configure any actuator to any board however the configuration of the electronics is specific to each actuator Microprocessor daughter PCAs T SM47j 3 2 1 2 The main controller The main controller provides the control and supervisory functions for the table This consists of the interface to the infrared handset corded handset via RS232 footswitch and standby panel It also controls the table power LED The main controller communicates with the two actuator controllers one of which is co located on the 4 actuator PCA by means of an RS485 multi drop bus This system enables multiple slave controllers to be attached at any time The main controller issues a health check poll message to each of the actuators up to four of which can be controlled by the single PCA to ensure that they are functioning correctly When a command is received from any of the user input devices the main controller issues the appropriate movement commands to the required actuator or actuator groups in the case of combined movements 3 2 1 3 The 4 actuator PCA The 4 actuator PCA is responsible for movement of four actuators on or wit
20. all cleaning materials in accordance with local waste regulations In the case of skin contact wash and rinse immediately with water If splashed into eyes rinse well with water and seek medical advice If acid mist is inhaled inhale fresh air and seek medical advice Connection of leads T SM47j 5 0 5 1 Power supply assembly This assembly Part number 111765 which is located in the table base has no user serviceable parts and must be changed as a complete unit also see section 3 1 5 2 Table fault finding 5 2 1 The Instructions for use contains a basic fault finding table that can be used to solve any minor problems This covers the main user errors i e there is no fault that can occur when the user has not read and understood the Instructions for use It also contains the first line of fault finding i e check external fuses try another handset try another mains lead The following section 5 2 2 provides atest sequence to help determine the fault for the majority of faults that may occur that could stop the table responding to an input via a control device Mechanical faults are normally self evident in that a part is worn damaged or broken In this case refer to the appropriate section of this manual for part replacement information Appendix 3 provides the schematic diagrammes that can also be used in fault finding 5 2 2 Follow the sequence below to identify most major faul
21. and check all base functions for correct operation 6 3 11 Pedal anti skid pads To replace the pedal anti skid pads when worn or contaminated with foreign matter simply remove the old ones clean the location recess thoroughly remove the release paper from self adhesive backing and adhere the new ones firmly in place Note that the pads come as a pair and are left and right handed 6 3 12 Pedal catch pawl and spring To replace the pedal catch pawl or spring only fitted to tables with internal pedal catch if they are worn or damaged refer to Fig 6 2b and proceed as follows i Remove the applicable base cover as detailed in section 6 2 2 1 ii Remove the two screws securing the pedal catch pawl assembly and remove the assembly from the table To replace the spring simply remove the old one and replace with a new one To replace the catch remove one starlock washer and remove the pawl spindle Assemble using a new catch pawl and new starlock washer iii Check catch pawl rotates freely and reassemble the pedal catch pawl assembly to the table and check pedal operation iv Replace covers as section 6 2 2 2 and check all base functions for correct operation P29 54 6 4 TABLE COLUMN COMPONENTS 6 4 1 The following parts on the table column may need replacement in the event of wear damage or malfunction see notes below in each section The procedures for these are detailed in the sections t
22. and hold the standby battery switch whilst operating the tilt motor via a handset b Each battery within a pair should atthe same voltage i e within 0 5V of each other C Ifthe voltage of one battery is significantly lower than the other gt 2V change the Power supply assembly iii Whenchanging batteries always change them as a pair main or standby Disconnect them atthe inline connector on the top of each battery iv Replace covers if required recondition the battery management system see section 6 6 26 and check table functions 6 3 3 Pedal dampers To replace a pedal damper if operation of the associated pedal shows sign of unit failure pedal operation not damped or oil is visible during inspection of the base during maintenance refer to Fig 6 2a or 6 2b as appropriate and proceed as follows i Ensure both pedals are in the raised position ii Remove the appropriate base cover as detailed in section 6 2 2 1 To gain easier access for this procedure remove the damper angle bracket from the table base plate by removing its two retaining screws This will enable the damper to be swung out and up clear of its low position making removal of the pivot pins easier iv Note the orientation of the spring clip on the piston pivot pins this is critical and must be copied when replacing them the limb of the clip should rest against the pedal anchor block to stop any lateral movement of the pedal assembly
23. down thread lubricate actuating nipple with grease part number 110477 Screw gas spring into the release head T SM47j casting until play has been removed between the release handle actuator and the gas spring release button then back off approximately half a turn Apply threadlock part number 670650 and tighten the piston locking nut onto the release head casting Apply grease part number 110477 to the shank and threadlock part number 670650 to the thread of the shoulder screw and replace it into the mounting block tighten to a torque setting of 10Nm vi Actuate the release lever to align the guide pins and replace section into a table trunk section Check that the section works correctly and that both gas springs are working together adjust if required as iv above and remove any excess threadlock vii Before disposing of the gas spring it is suggested that the high pressure gas is released from within the cylinder to avoid the possibility of injury or return it to Eschmann Equipment To release the gas nitrogen and a small amount of hydraulic oil locate the gas spring positively onto the bed of a drilling machine taking care not to puncture the cylinder Do not centre punch to provide a drill guide as this may rupture the cylinder and wear suitable eye and hand protection Use a 2 3mm diameter drill at slow speed and drill a hole 25 30mm from the mounting end of the cylinder to a depth of half the cylinder diame
24. left Four actuator PCA Program main controller Configure main controller Program actuator controller Configure actuator controller Calibrate tilt Calibrate Trend Calibrate height Telescopic column assembly Recalibrate height Tilt bush Recalibrate tilt Recalibrate Trend Tilt actuator Recalibrate tilt Trendelenburg actuator Recalibrate Trend P50 54 Trendelenburg bush Recalibrate tilt Recalibrate Trend Bearing pads Recalibrate height Break gearbox Recalibrate break right or Recalibrate break Left as applicable Break potentiometer loom Recalibrate break right or Recalibrate break Left as applicable Tilt Trend loom includes potentiometers Recalibrate tilt Recalibrate Trend Height potentiometer loom Recalibrate height Break gearbox loom Recalibrate break right or Recalibrate break Left as applicable T SM47j APPENDIX 3 SCHEMATIC DIAGRAMS 829111 WOO1 490718 HOLO3NNOO N33498 NOS SAdAL N33HOS SHOOLIMNW NMOHS
25. of the loom where it joins the four actuator PCA Remove all other cable ties and loom restraints P45 54 ESCHMANN iv Remove the cable ties at both ends of the energy chain to gain access to the retaining screws securing the energy chain remove the screws and take off the chain and loom assembly taking note of loom routing for replacement v Replace the new chain and loom assembly by reversing the above ensuring all looms are routed correctly and secured as found and clear of moving parts Then test all table functions 6 6 18 Break gearbox loom To replace a break gearbox loom item 19 of Fig 6 7 proceed as follows i Remove the head and leg section and then the trunk sections as detailed in section 6 2 5 noting the warning at the beginning of section 6 2 5 ii Remove the cross beam top cover item 10 of Fig 6 7 to gain access to the break gearbox loom securing screws Remove the P clips and connections to the break potentiometer the three actuator PCA and spade connections on the break motor iii Replace the loom remake all connections and secure the loom as found Check Appendix 2 and proceed as detailed in the Application software manual Reassemble the table and carry out a full table function test 6 6 19 Batteries table and handset 6 6 19 1 To replace the table batteries in the pedestal base refer to section 6 3 2 and replace them as a pair main or standby also see 6 6 26 to recondition t
26. or leads in turn see note in section 6 6 6 If either of the motors fail to run in both directions replace the telescopic column assembly as detailed in section 6 4 4 T SM47j 6 6 10 Break potentiometer loom 6 6 10 1 Toreplace a break potentiometer loom see note in 6 6 1 remove both the cover over the potentiometer and the short trunk bottom cover item 3 or 11 of Fig 6 6 6 6 10 2 Remove the short trunk black top ready for recalibration The potentiometer can now be removed by releasing the connector on the end of its short loom Replace with a new break potentiometer loom 6 6 10 3 Thenew potentiometer must be calibrated check Appendix 2 and proceed as detailed in the Application software manual 6 6 10 3 Reassembling the table using threadlock part number 670650 on all screws noting any applicable torque values as shown in Fig 6 5 and 6 6 and the note on Fig 6 6 6 6 11 Tilt potentiometer loom 6 6 11 1 Thetilt and Trendelenburg potentiometer looms see note in 6 6 1 must be changed as a pair they are on the same loom Remove the trunk sections and top location angles as detailed in section 6 2 5 1 parts i iv and the top of column cover item 12 Fig 6 1 6 6 11 2 Gain access to the top of the column as detailed in section 6 2 3 3 and remove the connection on the four actuator PCA from the tilt and Trendelenburg potentiometer loom 6 6 11 3 Remove both the potentiometers from the Trendelenburg frame see No
27. short trunk side arm with the gearbox attached Remove the gearbox from the short trunk side arm by removing the three M8 button head screws two at the top one underneath and the black top location dowel retain for replacing into the new gearbox Reassemble the table use threadlock part number 670650 on screw threads see note on Fig 6 6 and note any applicable torque values shown on Fig 6 5 and 6 6 but note that the break potentiometers will need to be recalibrated before refitting the black top to the short trunk Check Appendix 2 and proceed as detailed in the Application software manual T SM47j Torque settings Lead screws M10 set screw 20Nm Actuator arms M8 csk screw 14 Nm Sidebar screw 21 Black top M6 csk screw 6 Nm All M8 button head screws 10Nm Torx cover screws 0 5Nm R clip 11 Break attachment block right hand Ball bearing 12 Traverse rod Spring compression 13 Leadscrew traverse Plunger for push button 14 Break attachment block left hand Attachment block right hand 15 Traverse powered assembly see Fig 6 4 Push button blade 16 Side arm long trunk left hand Attachment block left hand 17 Black top long trunk Spring compression 18 Side rail long trunk UK Push button 19 Cover long trunk 0 Side arm long trunk right hand 20 Mattress retainer Fig 6 5 Table long trunk general arrangement T SM47j P37 54 Torque settings __ Note On later tables e
28. the other probe of the Megger to the surface of any other castor wheel i e not the one used in 2 2 The reading should be gt 100MQ 3 0 Enclosure leakage current 3 1 Using Tool 110721 and a DVM digital voltage meter test the enclosure leakage current of the table as below Note that in the tests that follow 1mV 1uA 3 2 Connect Tool No 110721 to the mains and plug the table mains cord into the tool s socket P54 54 3 3 Connect the other end of the table mains cord into the table s mains inlet socket 3 4 Connect the Green socket of the tool to the Enclosure leakage test probe 3 5 Connect the Enclosure leakage test probe to a side rail of the table 3 6 Connect the cords from the DVM either way round to the two Black sockets of Tool 110721 3 7 With switches 1 and 2 of the Tool off and switch 3 on the DVM should read gt 10 amp lt 50 if lt 10 gt 50uA there is a fault Note reading for later Disconnect the Enclosure leakage test probe from the table and the DVM should read 0 3 8 With switches 1 and 3 of the Tool on and switch 2 off the DVM should still read gt 10 8 lt 50 if lt 10uA gt 50 there is a fault Disconnect the Enclosure leakage test probe from the table and the DVM should read 0 3 9 With switches 1 2 and 3 of the Tool all off and the Enclosure leakage te
29. top Reassemble section as 6 5 1 3 and finally check section function 6 5 2 Trunk sections The following parts may need replacement in the event of wear or damage see notes below in each section and test details in the relevant part of section 6 6 before replacement The procedures for these part replacements are detailed in the sections shown below 6 5 2 1 Traverse motor 6 5 2 2 Traverse drive belt 6 5 2 3 Break motor 6 5 2 4 Break gearbox 6 5 2 5 Side rails T SM47j 6 5 2 6 covers 6 5 2 7 Push button components 6 5 2 8 Traverse rod bearing 6 5 2 9 Drive belt guide needle bearing 6 5 2 10 Attachment blocks 6 5 2 11 Black tops To gain access for some of these procedures it is not necessary to remove the trunk sections but to simply tip the table into the Service Position see section 1 9 Note safety warning in section 4 0 6 5 2 1 To replace a traverse motor first check that the motor has failed and not the control circuit as detailed in section 6 6 6 If the motor has failed replace it as follows noting comments for later tables Traverse motor Place the table into the Service position as detailed in section 1 9 noting safety warnings in Section 4 0 to gain access to the bottom cross beam cover item 17 of Fig 6 7 which can now be removed Slacken two 8 locking nuts releasing belt tension as much as possible not necessary on later tables Note the path of the drive
30. trunk sections which are heavy and require two people to lift safely 6 2 5 1 To remove the bellows completely proceed as follows but note that access to the column can be gained by releasing the telescopic covers and bellows without removing them as detailed in section 6 2 3 Removal of the bellows Remove as much as possible from the tabletop including all sections fitted to the two trunk sections and the mattress ii Release the top of the bellows as detailed in section 6 2 3 5 points i ii iii Release the bottom of the bellows as detailed section 6 2 3 4 points ii iv Reach inside the bellows and remove the four screws two per panel securing the switch panel retainers item 7 of Fig 6 1 to the accessory panel and the switch panel items 8 and 9 of Fig 6 1 The switch panel retainers can now be removed Remove the trunk sections see note below together with the traversing and break mechanisms by removing the four screws that secure this assembly to the top of the pedestal two M10 hexagonal head screws underneath each side Carefully place the trunk sections to one side leaving them in a stable position not resting on any fragile components P23 54 Note The trunk sections may become when the M10 screws are removed and extreme care should be taken Ensure trunks sections are supported during removal of these screws vi Remove the two to
31. vii Remove the appropriate sections top cover as 6 5 2 6 parts i ii Remove the sections black top Remove the black tops location dowel using a jacking screw if required and then all the button head screws securing the attachment block Remove the R clip and dismantle and remove all the push button components as 6 5 2 7 Slide out the attachment block and replace it with the new one Reassemble the push button components as 6 5 2 7 Reassemble the table by reversing the above use threadlock part number 670650 on screw threads and note any applicable torque values shown in Fig 6 5 and 6 6 Test all table functions 6 5 2 11 Black tops To replace a black top if damaged proceed as follows iv Remove the appropriate sections top cover as 6 5 2 6 parts i ii Remove the sections black top and replace it with the new one Reassemble the table by reversing the above use threadlock part number 670650 on screw threads and note any applicable torque values shown in Fig 6 5 and 6 6 Test all table functions T SM47j 6 6 ELECTRICAL COMPONENTS WARNING Ensure correct procedures are used if mains voltages are exposed Take care when handling or getting close to PCAs as some components can become hot enough to cause burns When testing the table take care that any attached leads or cables do not constitute a tripping hazard Also see safety warnings section 4 0 CAUTION Do not power any mot
32. 15 8TJ Made in England 44 0 1903 753322 www eschmann co uk T20AA1 11001 B5 Left down ia 120 103 1101 Hand controls original B8 Up infra red code B10 Caudally e 6 Flexion Extension 090 Eschmann Equipment Peter Road Lancing B11 Extension West Sussex 15 8TJ MADE IN ENGLAND 44 0 1903 753322 www eschmann co uk B12 Flexion SN 720A1J1001 REF 120 103 1101 INPUT 100 240V a c 120VA 50Hz 2002 11 60s 600s 22 B13 Return to 090096 _ a pre set position Tables original xn infra red code zoxsm N C Ak Fig 6 9 Handset button functions and serial labels Space to write new table infra red code Note Labels shown above are examples see the applied serial label for the actual data and j N Jt LL gt gt Dummy buttons without function B17 OLD INFRARED HANDSET NEW INFRARED HANDSET Fig 6 10 Old and new infrared Handset buttons P44 54 Dummy buttons without function T SM47j 6 6 13 4 Replace the new height potentiometer loom and itto the four actuator Re fasten the cable to the table base and replace the covers The height potentiometer must now be calibrated check Appendix 2 and proceed as detailed in the Application software manual 6 6 14 Traverse mo
33. 3 10 Pedal catch block 6 3 11 Pedal anti skid pads 6 3 12 Pedal catch pawl and spring Fig 6 2a shows the general arrangement for a table with external pedal catches and Fig 6 2b and Fig 6 2c show the general arrangement for a table with internal pedal catches Fig 6 2c shows the new base arrangement for tables having a Serial number prefix of T2AC or later These figures identify the main parts of the table base assembly refer to them as required Ensure you refer to the correct instructions according to the type of pedal catch fitted to the table also see section 6 1 9 and base arragemnet according to table height Always ensure the correct parts are used during part replacement refer to the illustrated Parts list P24 54 6 3 2 Batteries IMPORTANT NOTE See section 6 6 26 battery management system reconditioning before changing the batteries i Check fuses in the event of power failure before replacing batteries before removing or replacing either battery inline fuse see section 6 6 26 ii Ensure the table is switched off at the main column switch If batteries are suspect do not change a them unless they are obviously faulty using the following notes as a guide a The fully charged single battery voltage should be at least 12 5V or a series voltage of 25 27 5V per pair and a series voltage of between 23 5V and 25 5V when powering the tilt motor table not loaded To test the standby batteries press
34. 3 3 parts i iii for pedal damper replacement ii Swing the lifting roller assembly and spindle clear of the pedal anchor blocks to enable removal of the lifting roller spindle ii Replace the complete lifting roller assembly includes bearings and reassemble do not forget to refit the M10 washers at each end of the roller assembly iv Reassemble as detailed in section 6 3 3 using the grease and threadlock as specified v Replace covers as section 6 2 2 2 and check all base functions for correct operation T SM47j 6 3 10 Pedal caich block To replace or adjust the pedal catch block not fitted to tables with internal catch if worn or damaged place the table on a flat floor surface refer to Fig 6 2a and proceed as follows i Remove the applicable base cover as detailed in section 6 2 2 1 ii If replacing the pedal catch block remove the two securing screws and replace with a new one using threadlock part number 670650 on the screws and adjust as below iii To adjust the pedal catch block tighten or loosen the fixing screws so that the block just moves Ensure the other pedal is in the raised position Replace the pedal and push it down as far as it will go and move it towards the base Slide the catch block towards the pedal until it just touches the top of the pedal arm Tighten the catch block screws and check pedal operation iv Raise the pedal and remove it from the table v Replace covers as section 6 2 2 2
35. 5 3 1 and 6 6 26 Also look to see if the PCA indicator lights are flashing on for 1 second and off for 1 second If they are off or flashing faster this indicates an electronics fault see 5 2 3 5 Ifthe fault is only apparent for one motion this could indicate a failed motor or failed sensor for that motion or an electronics fault If the motion starts and then stops immediately this could indicate a failed sensor or an over current situation Test motor as detailed in section 6 6 if the motor works and no small movement is observed following a demand for that motion it indicates an electronics fault see 5 2 3 5 2 3 Electronic faults can only be determined with the table connected to a PC with the T20 Application Software installed Consult the Application Software Manual as detailed in section 1 1 which provides guidance on fault diagnosis Also note that when correcting electronic faults and following some parts replacement the table will require reprogramming reconfiguring or recalibration These aspects are also fully covered inthe Application Software Manual 5 2 4 Break motion control 5 241 Thetwo break arms are independently controlled and are synchronised to operate within a programmed limit of each other This control system can result in small variances that appear as a slight misalignment this is acceptable and a part of the normal table control software routine In the unlikely event that t
36. Service Table details Service Engineer Engineers Name Eschmann Hospital Contact Tel No cesare Person responsible for table M xoi Dept ae a dae Health Authority ee Table details LOGALION Account If appl Service detail nern Time completed 274 visit YES NO Delete as required T SM47j P19 54 6 0 PART REMOVAL ADJUSTMENT REPLACEMENT 6 1 GENERAL 611 This section has been split into the following sections for easy reference note safety warnings in section 4 0 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 1 2 Within the text detailing a part replacement any specific setting or adjustment is fully detailed Each section also provides specific details of any required lubrication during assembly the use of threadlock fluids and any specific torque settings that should be adhered to Note Conversion chart and conversion data for Torque values in Appendix 1 Table base and column covers Table base components Table column components Table sections Electrical components Function tests after maintenance Accessories 6 1 3 All replacement parts must be supplied by Eschmann and note that this also includes all the nuts screws roll pins pivot pins etc that are speci
37. W HOLIMS 6 N SHOSS3OOUd VOd 8 5 SIXV Lov Yr ws NANTO 5 ar 5 YOLOW Ovid ASVd 33S vir w S Ho j unug o 91 SUSHLO W uus 1 0 06 NMOHS 6 N HOLOW QN3H L 9 er PALi HOSS320Hd uva 42 NOS 4 H3T10H1NO9 W YOLOW eur 929111 8 HOSS300ud sir N NOS 1 se een 209014 ya HOLON 3AnvW aw ONIY 1 um 5 6 917 HOLOW JTL gau Gu a jp sir Nos 8 W 1 HOLON MOTI3A E 5 am t cod 5 er 4 XOog8uvao LIL N3auo au sr tut ve HOLOMW ama er au NMOHS 8 L Hal3WollNalod E 1H9I3H mr ANIT 18 1HVHO Lr 310709 341M 1 4 nos el 1 NAWN109 vr g ie 4 LE 209011 L3SANVH WOO H313NOLLN310d 5 il e AL ust XLzezsu AGE i 13SQNVH NOILONN W007 49078 HOLO3NNOO
38. al head screws that secure the trunk sections to the column always ensure that precautions similar to those detailed in 4 1 above are taken Remove all accessories sections and trunk mattress and support the trunk sections during screw removal 4 4 When the Trend and or tilt actuators are removed the trunk sections will not be stable Before removal follow similar precautions to those detailed in section 4 1 Remove all accessories sections and trunk mattress and support the trunk sections during actuator removal Replace the actuator as soon as possible 4 5 Working with mains voltage The only time that it may be required to work with mains voltage applied to the table is whilst testing the battery charger During this procedure ensure that normal safe M10 trunk screw removal Trend and tilt actuator removal P16 54 working procedures are employed for an activity that entails working with mains voltage such as i Reduce the amount of live work to the minimum possible ii Use common sense and stop working if approached distractions can kill Ensure the area is clear of all unnecessary personnel or warn people in the area to stay clear during live work Also ensure that you are not entirely alone and that someone could come to your assistance if you should suffer an electric shock iv Only use the correct equipment probes and cables for the work in hand v Mains power should be supplied via an RCD residual curren
39. ared handset ii Raise the telescopic cover sufficiently to enable the covers to be correctly positioned and aligned iii Replace all the fixing screws without threadlock and the earth equalization pin using threadlock part number 670650 iv Replace and secure the foot pedals see note below ensuring they are placed at their correct ends long pedal at head end with the internal return spring in place spring only fitted if the pedal has an external catch Use threadlock part number 670650 on both screws Note When replacing the foot pedal shoulder screw on pedals with internal spring return initially tighten with fingers to ensure that the shoulder of the screw has correctly located into the hole in the shaft v Test table base functions 6 2 3 Access to column 6 2 3 1 Access be gained behind the column covers in four ways Either release the bottom of the telescopic covers and lift them to gain access to the lower column see section 6 2 3 2 or release the top of the telescopic covers and lower them to gain access to the lower mid column see section 6 2 3 3 or release the bottom of the bellows and raise them to gain access to the upper mid column see section 6 2 3 4 or release the top of the bellows and lower them to gain access to the top of the column see section 6 2 3 5 6 2 3 2 Lower column access Raise the height of the tabletop as far as possible this will ensure maximum access and exp
40. arts i vi for castor replacement noting part orientation ii Carefully tap out both headed bushes always change as a pair from the castor plate and replace with new bushes iii Reassemble as detailed in section 6 3 5 1 using the grease and threadlock as specified Replace covers as 6 2 2 2 and check table base function 6 3 8 Pedal spindle bushes To replace the pedal spindle bushes if worn refer to Fig 6 2a or 6 2b as applicable and proceed as follows i Before removing parts note the orientation of the bushes in the pedal anchor blocks ii Remove the applicable pedal spindle and lifting wheel assembly as detailed in section 6 3 5 1 parts i vi for castor replacement and then remove the remaining anchor block as well iii Carefully tap out headed bushes from all applicable pedal anchor blocks and replace with new bushes two anchor blocks head end three anchor blocks leg end always replace bushes as a spindle set Replace the rear pedal anchor block and then reassemble as detailed in section 6 3 5 1 using grease and threadlock as specified taking care to replace pedal anchor blocks in the correct orientation v Replace covers as 6 2 2 2 and check table base function 6 3 9 Lifting roller assembly To replace the lifting wheel bearings if worn refer to Fig 6 2a or 6 2b as applicable and proceed as follows Remove the applicable damper angle bracket from the table base plate as detailed in section 6
41. ause burns during electrosurgery and must be avoided 2 7 2 Defibrillation equipment With the mains cord attached the equipment has defibrillator proof applied parts with type BF protection against electric shock 2 7 3 Other When the 20 is used in conjunction with other infrared controlled devices their controllers should be checked to ensure that no interference between them and the 20 15 possible prior to surgical intervention Also see the Instructions for Use 2 8 Standards compliance The table has been designed and built to comply with the following international standards BS EN 60601 1 1990 issue 2 October 1997 BS EN 60601 1 2 1993 BS EN 60601 2 46 1998 BS EN 60601 1 4 1997 2 9 Environmental conditions 2 9 1 Operating environment The table has been designed to operate in the following environment 10 C to 40 69KPa to 106KPa 30 to 7596 RH non condensing Temperature range Pressure range Humidity range 2 9 2 Transport amp storage environment The table can be transported and stored safely in the following environment 30 to 50 69KPa to 106KPa 30 to 90 RH non condensing Temperature range Pressure range Humidity range NOTE Items marked are to be changed with caution During change or replacement they must only be disconnected for a maximum of 60 seconds If battery power is removed from the table for longer than this then re
42. belt before removing the motor assembly Remove the two M6 socket head screws securing the motor support posts to the traverse crossbeam assembly item 1 of Fig 6 7 Remove the motor assembly and then remove the two spade connections noting orientation from the motor terminals iii Release the screw securing the pulley to the motor spindle and remove the three screws holding the motor to the motor support plate iv Secure the new motor to the motor support plate use threadlock part number 670650 on all these and all other screw threads replace the pulley but do not tighten the securing screw at this stage v Connect the motor to the original spade connectors ensuring correct orientation and reassemble the motor assembly to the traverse cross beam ensuring the belt is correctly routed by referring to Fig 6 7 Align the pulley and tighten the location screw note torque setting of 9Nm vi Adjust the belt tensioners and tighten them when adequate tension is achieved do not over tighten to the extent that the inner faces of the belt touch Run the traverse motor from a 24V d c supply and check for correct belt alignment repeat in the opposite direction Adjust tension on later tables by rotating motor plate about support A tighten support B then A when tension correct see Fig 6 7 vii Continue to reassemble the table by reversing section i above viii Test all table functions P35 54
43. can be obtained from Eschmann Equipment Only qualified and trained engineers should service or maintain this operation table to ensure that all the built in safety features are not compromised 1 1 This Service Manual should be referred to for details of the T20 a Powered Operation Table Serial Number SN T2AA3A0000 or above REF T20 223 2301 REF 120 221 2301 amp T20 106 2301 REF 20 221 2101 amp 20 106 2101 These models have Denyer style accessory side rails The related publications listed below provide additional information T IM102 111701 Instructions for use T IPL35 111706 Illustrated parts list T IM94 111012 Series Application software manual T IM56 698907 General accessory leaflet The number in brackets above is the part number for that publication 1 2 Instructions for use and Service manuals should be readily accessible for reference prior to and when operating cleaning servicing or maintaining the operation table amp 120 108 2301 1 3 The table and all accessories are not supplied sterile therefore the table and all accessories should be cleaned and disinfected in line with hospital practice and the information supplied in the Instructions for Use before use 14 The manuals listed above and the Application software are available to order from Eschmann Equipment see inside front cover for address details 1 5 sure that routine servicing is carrie
44. conditioning of the battery management system must be carried out see section 6 6 26 T SM47j P9 54 ESCHMANN 1120mm max see section 2 2 250mm nominal gt ja 720mm min see section 2 2 These are maximum movements for each aspect they may not be available in certain combinations e g maximum tilt and maximum Trendelenburg Movements that could cause damage cannot be catered for e g position of the leg section Fig 2 1 Major dimensions and movements P10 54 T SM47j The graph indicates the maximum patient weight that can be placed on the table when adjusted as shown with their centre of gravity normally the umbilicas positioned relative to the table as indicated In these examples the maximum patient weight is approximately 300kg and 215kg 2 Maximum traverse caudally In both graphs the shaded area of the chart indicates the safe working zone Table in normal orientation
45. d 17 of Fig 6 6 and items 10 and 16 of Fig 6 5 Note that on the long trunk section there is a central short screw that can be released through the hole on the inside of the side arm ii Secure the new side rail to the section use threadlock part number 670650 on screw threads and note torque value of 21Nm 6 5 2 6 Top covers To remove or replace a long or short trunk top cover proceed as follows traversing the table as required to gain access to the fixing screws i Remove the side rails as detailed in section 6 5 2 5 and then the small screws securing the lower edge of the cover to the side arms ii Remove the screw cover on the mattress retaining Screws and then remove the mattress retainers Carefully release the lower edge of the cover on each side and flex the cover from the middle to release it not by bending out the sides see diagram below Take care not to damage it if itis to be reused and not replaced RA VOX Vv iii replace the cover reverse the above using threadlock part number 670650 on all screw threads except the small M3 Torx screws retaining the lower edge of the cover note torque setting of 0 5Nm for these and note any other applicable torque values shown in Fig 6 5 and 6 6 6 5 2 7 Push button components The push button assembly locking or non locking does not require any special adjustment after assembly Should any part require replacement or cleaning follow the method below
46. d out as detailed in the service schedule section 5 4 by Eschmann trained or accredited engineers 1 6 Theservice schedule provided in this manual details a program of maintenance work to be carried out at six monthly intervals refer to the applicable section of this T SM47j manual for details of how to perform these various functions Any special adjustments required for components are detailed in the part replacement section 6 0 for that item to save duplication As routine the Service Schedule should be followed in the event of an additional service due to a fault developing with any aspect of the table this will ensure that all aspects of the table are covered WARNING Ensure that the correct screw torque settings are used as detailed within this manual to ensure Safety and that parts are not damaged 1 7 Throughout this manual there are recommended torque settings for many of the screws In the main these are only provided on the illustrations Ensure that these are checked and the correct torque settings are used where specified These are provided to ensure safety i e screws are tightened correctly and that components are not damaged by excessively high torques 1 8 Fig 1 0 identifies the main parts of the T20 a operation table 19 The table can be placed into a Service Position that provides easy access to components within the top of column area ensure table is switched off before opening to
47. e detailed below Head and leg section see Fig 6 4 6 5 1 1 Guide pins 6 5 1 2 Gas springs 6 5 1 3 Cover 6 5 1 4 Gas spring release head pivot pin 6 5 1 5 Gas spring release handle 6 5 1 6 X ray translucent top See Fig 6 4 for the general arrangement of the head and leg section assembly the figure shows the leg section but note that the head section is similar no cross bar or middle side bar screws 6 5 1 1 To replace a guide pin if worn or damaged remove the retaining screw and refit a new pin Apply threadlock to the screw part number 670650 and lubricate the pin sparingly with grease part number 110477 Tighten securing screw to a torque setting of 8Nm Check section fits table correctly Guide pins 6 5 1 2 Gas springs WARNING Gas springs are filled with high pressure gas DO NOT attempt to open them see section 6 5 1 2 vii before disposal CAUTION Gas springs do not require additional lubrication To replace a gas spring if it shows sign of oil leakage or has become spongy pressure applied on one side of the section produces noticeably more movement than the other proceed as follows i Remove section from table and rest it on a suitable work surface upside down ii Remove the shoulder screw in the mounting block at the cylinder end iii Release locking nut at the end of the piston and unscrew gas spring piston from release head casting iv Wind nut on the new gas spring well
48. e limit switch bracket Spring compression Traverse limit switch cam Torque settings M10 screw fixing to column 48Nm M6 skt hd fixing screw 9 Nm Exploded view of _ motor assembly rotated 90 Motor support plate detail for later tables 4 9 Traverse motor amp m switches Cover crossbeam bottom early version drawn Three actuator PCA Break gearbox loom Valeo motor Pulley Flange Traverse motor plate Needle bearing Traverse motor plate support Shoulder screw M8 nonstandard Insulation sheet Headed bush Fig 6 7 Table traverse general arrangement T SM47j 6 5 2 9 Drive belt guide needle bearing To replace a traverse drive belt guide needle bearing item 24 of Fig 6 7 proceed as follows Remove the motor as detailed section 6 5 2 1 parts i ii Remove the two nuts on the shoulder screws item 26 of Fig 6 7 and release the two needle bearings Replace the new bearings pack with grease part number 110477 and reassemble the motor assembly use threadlock part number 670650 on screw threads and note any applicable torque values noting part orientation as shown in Fig 6 7 Reassemble as section 6 5 2 1 parts v viil Test all table functions 6 5 2 10 Attachment blocks To replace an attachment block if the guide pin location hole is worn or if the block is damaged proceed as follows vi
49. e short trunk Remove the motor connector from the loom junction and remove the two motor fixing screws to release the motor Then check that motor has failed and not the control circuit as detailed in section 6 6 7 If the motor has failed replace it as below or replace the original and then check the other break motor Remove the drive connector from the old motor before discarding Replace the drive connector onto the new motor and reassemble the table by reversing the above use threadlock part number 670650 on screw threads and see note on Fig 6 6 Test all table functions 6 5 2 4 Break gearbox To replace a break gearbox which includes the motor proceed as follows vi Traverse the table top to a suitable position and remove the short trunk bottom covers items 3 and 11 of Fig 6 6 from the short trunk Remove the short trunk top cover as detailed in section 6 5 2 6 Remove connections from the break potentiometer loom and from the break motor where they join the break motor loom Remove the break potentiometer cover and then the break potentiometer loom from the break gearbox and retain the break potentiometer loom to fit to the new gearbox Remove the long trunk cover see 6 5 2 6 and the short trunk black top see 6 5 2 12 and do not replace black top until after recalibration Remove the two countersunk 8 screws that secure the arm of the break gearbox assembly to the long trunk and remove the
50. eck the security and the routing of the Three actuator PCA connectors energy chains and traverse and break motor looms within the traverse housing Cable tie if necessary Check that traverse motor and traverse belt tensioners are secure to the support plate and lubricate tensioner bearings between screw and bearing only Check traverse motor 6 5 2 1 and adjustment of the traverse belt tensioners 6 5 2 2 Check the condition and lubricate if necessary the drive belt guide needle bearings between screw and bearing only 6 5 2 9 P18 54 T SM47j Trunk sections and covers 20 Check condition excessive wear breakage oftraverse rod bearings 6 5 2 8 21 Check operation and adjustment of the traverse limit switch assemblies 6 6 14 NOTE Check that the traverse movement stops when the traverse limit switch pin is depressed from both ends and from both sides of the table 22 Check that the set screws that retain the traverse leadscrews are tight 20Nm and lubricate the lead screw and traverse rod 23 Clean the male and female pins on the 4 way communication connector block to ensure a good contact check for cracks or damage 6 6 15 24 Remove long short trunk push button assemblies clean and check condition of catch blade 6 5 2 7 do not lubricate 25 Check guide pin holes in the attachment blocks for excessive wear 6 5 2 10 26 Checks for equal and even movement of the two break motors i e check both b
51. ed as detailed but replace the two Trendelenburg bushes item 11b of Fig 6 3 always replacing them as a pair Note It will also be necessary to remove the R clip and pin from the top of the Trendelenburg actuator and release the connection on the four actuator PCA on the column from the two potentiometers on the Trendelenburg frame and ensure the loom from the potentiometers is free from any fixing to the table Replace and reconnect on assembly Check Appendix 2 and proceed as detailed in the Application software manual before replacing covers Finally test all table functions 6 4 8 Bearing pads To replace the bearing pads in the wrapround assembly proceed as follows i Remove the wrapround assembly as detailed in section 6 4 4 parts ii Carefully tap out the four bearing pads and replace them with new ones always replace as a set of four iii Reassemble the table by reversing the above noting the assembly notes in section 6 4 4 parts xi xiii iv Check Appendix 2 and proceed as detailed in the Application software manual before replacing covers Finally test all table functions T SM47j 6 5 TABLE SECTIONS This section is split into two parts as follows 6 5 1 6 5 2 Trunk sections long and short see Figs 6 5 to 6 7 6 5 1 Head and leg section The following parts may need replacement in the event of wear or damage see notes below in each section and the procedures for these ar
52. erview 13 3 2 2 Handsetoverview 14 4 0 Safety warnings 41 Service position 16 42 Lifting 16 43 MliOtrunkscrewremoval 16 4 4 Trend and tilt actuator 16 4 5 Working with mains voltage 16 46 GasspringS 16 47 PCAS 16 48 Biologicalcontamination 16 4 9 Connection of leads 16 4 10 Leaking batteries 16 5 0 Maintenance 5 1 Power supply assembly 17 5 2 Table 17 5 2 4 Break motion control 17 5 2 5 Trunk section connector blocks 17 5 3 Fuselocation 17 54 Service schedule and safety check 18 6 0 Part removal adjustment replacement 61 20 6 2 base and column covers 20 6 2 2 Base covers 20 6 2 2 1 Removal of base covers 20 6 2 2 2 Replacing base covers 21 6 2 3 Access to column 21 6 2 3 2 Lower column access 21 6 2 3 3 Lower mid column access 21 6 2 3 4 Upper mid column access 21 6 2 3 5 Top of column access 23 T SM47j 6 3 6 4 6 5 6 6 6 2
53. escopic covers slowly until sufficient access has been gained behind them to allow disconnection of the standby control panel ribbon cable from its connection on the column PCA vi Continue to lower the telescopic covers and disconnect the earth wire from the middle telescopic cover where it is connected to the wrap round T SM47j Remove the four screws two per join holding the top telescopic section together and remove the section Continue removing the top telescopic section disconnecting the earth link as required until all sections have been removed Note orientation of parts for later assembly 6 2 4 2 the telescopic covers Ensure the plastic scratch and noise reducers in place on the lower and upper edges of each telescopic section before starting to refit them ii Refitthe covers by reversing the removal sequence detailed above checking that the earth connections and the standby control panel are reconnected Use threadlock part number 670650 on all screws iii On completion test that the telescopic covers move correctly by powering tabletop use handset not standby panel up and down from minimum to maximum several times Check bellows work correctly by moving table through several complete sequences of extreme tilt and Trendelenburg movements Then check all the functions of the standby panel 6 2 5 Bellows WARNING Removal and replacement of the bellows entails removal of the
54. feedback both the left and right break actuators have potentiometers and the traverse actuator has limit switches which open when the long trunk reaches either end of its movement The left and right break actuators are independently controlled to move at a set speed and to maintain a minimum deviation between them P13 54 3 2 2 Handset overview There are two versions of handset cordless type infrared handset with an infrared emitter powered by 2 AA cells and a corded version corded handset with an RS232 link to the main processor on the 4 actuator PCA The latter version derives its power from the T20 a 3 2 2 1 Infrared handset The 4 x 5 matrix keyboard is decoded using a proprietary keyboard decoder This device is powered down and remains dormant until a key is pressed causing its clock oscillator to be initialised The key is decoded and the 38kHz modulated signal is fed to the infrared LED via a FET The whole system is powered via 2 AA batteries 3 2 2 2 Corded handset The 4 x 5 matrix keyboard is decoded using a proprietary keyboard decoder This device is powered down and remains dormant until a key is pressed causing its clock oscillator to be initialised The key is decoded and the 38kHz modulated signal is fed to a PIC processor The processor decodes the output from the keyboard decoder into RS232 This output is fed to an RS232 line driver The corded handset s power i
55. fied in the Illustrated parts list Some of these are provided to a specific standard e g high tensile and the use of similar items could compromise the strength and therefore the safety of the table 6 1 4 All electrical components are non repairable and must be replaced with new Eschmann parts only to maintain the safety of the system Replacement is usually a self evident procedure but ensure i Good wiring practice is observed and static discharge procedures are adopted as applicable when handling PCAs printed circuit assemblies ii All wiring is replaced as found and secured away from any moving parts using adequate quantities of cable clips and restraints iii All fixings are replaced as found and no substitutes are used iv The function checks detailed in this manual section 6 7 are carried out on completion of any part replacement 6 1 5 After all procedures the table should be left clean and in full working order run function test detailed in 6 7 to ensure safety and ensure the Electrical safety checks in Appendix 4 6 1 6 Before any part removal replacement procedure ensure the table is not connected to the mains If mains power is required at any time during diagnostic checks ensure that appropriate safe working procedures for live working are adopted see section 4 5 P20 54 6 1 7 To avoid duplication of common procedures a cross reference to the required part of the manual detailing the p
56. hat follow 6 4 2 Trendelenburg actuator 6 4 3 Tilt actuator 6 4 4 Telescopic column assembly 6 4 5 Tilt and Trendelenburg actuator motor 6 4 6 Tilt bushes 6 4 7 Trendelenburg bushes 6 4 8 Bearing Pads Fig 6 2 and 6 3 show the general arrangement and identify the main parts of the table base assembly and column refer to these as required 6 4 2 Trendelenburg actuator To replace the Trendelenburg actuator if damaged worn or has failed see section 6 6 8 to test motor and 6 4 5 for motor replacement refer to Fig 6 3 and proceed as follows vi Gain access to the top of the column as detailed in section 6 2 3 Remove motor cable spade connectors from where they connect onto the mid column PCA note two sizes to aid correct connection and the earth lead See safety warnings in section 4 0 as the table top will not be stable during the following procedure Remove the R clips from the top and bottom pivot pins remove the pins and remove the Trendelenburg actuator Before refitting a new Trendelenburg actuator check both pivot pins for wear and replace as required Replace the Trendelenburg actuator by the reverse of the above and remake connections Reassemble table recalibrate Trendelenburg and carry out a function test 6 4 3 Tilt actuator Replacement of the Tilt actuator see section 6 6 8 for motor test details and 6 4 5 for motor replacement is similar to replacing the Trendelenburg actuator as deta
57. he motor assembly onto the crossbeam frame note torque value of 9Nm Ensure the correct routing of the drive belt see Fig 6 7 and adjust the belt tensioners tighten them when adequate tension is achieved do not over tighten to the extent that the inner faces of the belt touch Adjust tension on later tables by rotating motor plate about support A tighten support then when tension correct see Fig 6 7 Run the traverse motor with a 24V d c supply and check for correct belt alignment Repeat in opposite direction Reposition motor drive pulley if required Power or turn lead screws back into break attach ment blocks and when both are correctly aligned the flats on the lead screws are vertical and facing their M10 set screws see note below tighten the two M10 set screws in the break attachment blocks to clamp the lead screw note torque setting of 20Nm Replace the dome plugs in attachment blocks Note When tightening the M10 set screws ensure that they only engage onto the flat of the lead screw and do not engage onto the thread of the lead screw Reassemble the table by reversing the above and test all table functions P36 54 6 5 2 3 Break motor To replace a break motor proceed as follows noting that either of the two motors could have failed and both need to be checked Traverse the table top to a suitable position and remove the short trunk bottom covers items 3 and 11 of Fig 6 6 from th
58. he battery management system if required 6 6 19 2 To replace the batteries in the infrared handset proceed as follows Note Service kit part number 111040 UK side rails or 111745 Denyer side rails contains all the required parts including a new spring clip and screws also see section 6 6 23 1 Remove the six screws from the back of unit and carefully separate the front and back moulding noting that the internal PCA is connected to both mouldings ii Remove both batteries and always replace both as a pair Ensure the new batteries are replaced in accordance with the markings in the moulding recess iii Replace the waterproof seal with new one and ensure that it is in place within its seating this is required to ensure the IP rating is not compromised Check the connection on the PCA from the battery leads and the overlay are in place and that the PCA is resting on the moulded ledges near the batteries and correctly positioned over the two circular posts at the opposite end before clipping the back and front mouldings together iv Replace the securing screws using the six new screws evenly and tighten them to a torque setting of 0 5Nm v Testthe unit functions correctly P46 54 6 6 20 6 6 20 1 All the table fuses are detailed in the Technical Data Section 2 5 5 When replacing fuses check for any obvious causes and investigate the reason for failure if the fuse continues to fail Fuses 6 6 20 2 To
59. heck for wear and replace parts as required following the procedure below Remove the cover as detailed in section 6 5 1 3 ii Remove the gas spring as detailed in section 6 5 1 2 Onaleg section remove the cross bar by removing the four retaining screws iv Remove the end cap by removing its fixing screws and slide it out of the side arm v Remove the pivot pin from the end cap and check it and the release head for wear or damage replace parts as required vi Reassemble using the reverse of sections i v above lubricating the pivot pin with grease part number 110477 and noting the use of grease threadlock and torque values Fig 6 4 when replacing the gas spring and sidebar screws see sections 6 5 1 2 and 6 5 1 3 On the leg section the cross bar screws also require threadlock part number 670650 Finally check section function 6 5 1 5 Gas spring release handle If the gas spring release handle is damaged remove replace it as below i Remove section from table and rest on a suitable work surface upside down ii Using a suitable punch knock out the roll pins that hold the handle in the release heads iii Reassemble by reversing the above lubricating with grease part number 110477 and finally check section function 6 5 1 6 X ray translucent top To replace an X ray translucent top proceed as follows Remove cover from section as 6 5 1 3 ii Remove old and replace new X ray translucent
60. hin the table s column These are the top and bottom height actuators inside the column assembly the Trendelenburg actuator and the Tilt actuator mounted on the column A number of signals control the movement of each actuator signal is used to set the speed of the motor digital signals control direction forward reverse a digital signal enables the drive circuit and another digital signal effects a brake on the motor by shorting the windings together The electronics provide a digital fault signal to indicate when there is a problem with the control circuit or an over current situation has occurred An analogue signal is also provided on all but the bottom height actuator The analogue signal on the top height actuator is the output from a potentiometer that indicates the combined position of the height actuators Although the column contains two motors there is only a single potentiometer to indicate the height of the column This analogue signal is fed to the top height actuator the bottom height actuator is effectively slaved to the top 3 2 1 4 The Three actuator PCA The Three actuator PCA is responsible for movement of the three actuators within the tables long and short trunk sections These are the left break actuator right break actuator and the traverse actuator These actuators are controlled by the same signals as on the 4 actuator PCA In terms of
61. his deviation goes outside of the programmed limit the table break motion only will stop working This can sometimes be corrected as below 5 2 4 2 Whilst observing the two break arms press for approximately 0 5 seconds only a break control button on the handset B7 or B8 of Fig 6 9 once or twice If this makes the deviation worse press the other break control button as above once or twice If the break motion still does not work correctly after this there could be a fault in one of the following Break motor Break potentiometer Wiring to any of the above Significant uneven table loading This problem will only be evident during use and if investigated at service it will be difficult to reproduce 5 2 5 Trunk section connector blocks 5 2 5 1 Ifallthetoptable functions stop working e g break and traverse the connector blocks item 5 Fig 6 7 and item 14 Fig 6 3 could be failing to connect correctly due to contamination etc Check that a good contact is being made between the column and trunks connector blocks 5 3 Fuse location 5 3 1 All fuse locations are identified in section 2 5 4 and Fig 1 0 DO NOT REMOVE OR CHANGE INLINE BATTERY FUSES UNLESS YOU HAVE READ SECTION 6 6 26 P17 54 ESCHMANN 5 4 _ Service schedule and safety check This should be performed every 6 months to ensure the 4 Priorto changing a motor check it has failed and that continued safe operation of the table the fault is notin the cont
62. ht the maximum Trendelenburg and leg section movements cannot be achieved due to the proximity of 29 2V d c max when charge state LED the floor Similarly with a large amount of tilt set maximum red or orange 27 6V d c when charge state Trendelenburg cannot be achieved LED green Max Trendelenburg 1 is 5 2 359 90 2 5 4 Fuses reverse Trendelenburg 1 in is 35 extension 4 T 2809 2541 External fuses Max flexion 4 90 Mains input fuses item 17 Fig 1 0 Head section 5 45 2 x T4A 5 x 20mm 250V E ot B 1 Leg section 3 100 455 altery fuses termi Fig 1 0 Max lateral tilt 7 18 2 20 6 35 x 32mm 500V 8 54 T SM47j Note The right hand fuse is linked to the main batteries and the left hand fuse i e nearestto the backup battery switch is linked to the backup batteries Mains plug fuse 10A type is dependent on plug which may have been changed from that originally supplied 2 5 4 2 Internal fuses only accessible by engineer Battery fuses joining each battery pair 2 x 30A blade type 1 per battery pair 2 5 5 Duty cycle 7 This symbol is used to indicate the table s duty cycle which in the worst case is 60s 600s the ratio of the operating time to the sum of the operating time and the ensuing interval see note below Each motor drive has its own duty cycle and this is dependent on l
63. iled above in section 6 4 2 follow this to replace the tilt actuator note no earth connection on tilt actuator Recalibrate Tilt P30 54 iv vi vii viii xi 6 4 4 Telescopic column assembly WARNING Removal and replacement of the telescopic column assembly entails lifting the trunk sections the complete wrapround assembly and blocking up the base assembly These procedures require two people to perform safely do not proceed unless two people are available To replace the telescopic column assembly see section 6 6 9 for test details place the table on a flat surface in the braked orientation and proceed as follows Gain access to the top of the column as detailed in section 6 2 3 Remove trunk sections as detailed in section 6 2 5 for bellows replacement also see safety warnings section 4 0 Remove the connector of the loom coming out the top of the cable guide chain from the four actuator PCA by pressing the release clips moulded into the plug Release the column energy chain two screws top and bottom may be hidden under cables from the wrapround assembly removing cable ties as required replace these on assembly Release see note below the lower end of the height potentiometer cable from the base plate and allow it to slowly retract back NOTE DO NOT ALLOW CABLE TO SNAP BACK Loosen the wrapround column slide bearings screws at the lower edge of the wrapround Remove the top of colum
64. intain the antistatic pathway the table must be used on an electrically conductive or antistatic floor and The following are the nominal major dimensions of the with mattresses supplied by Eschmann standard table with head and leg sections fitted and Equipment include the 50mm mattress and side rails if applicable see Fig 2 1 for illustration the number in brackets after the 2 52 Batteries item details which part 2 2 Dimensions Table base Overall engin 2 E E 7 21 u Main batteries Maximumheight 4 1120mm Two 12V 10 0Ah sealed lead acid Minimum height 5 js E 720mm Backup batteries Maximumtoptraverse 2 250mm Two 12V 1 2Ah sealed lead acid Overall width 6 600mm see battery disposal caution in the Instructions for Use Sidebars Denyer _ e 87 8x 5 5mm Infrared handset Two 1 5V size AA Alkaline Note Must only be changed in accordance with the notes in the section 2 3 Movements 6 6 19 2 to ensure the IP rating is not compromised 5mm less for Serial Numbers prefixed 2 or T2AB The following table movements are maximums and cannot 2 5 3 Internal battery charger be assumed to be available in all combinations of table 2 2 2 Terma battery __ positioning see Fig 2 1 for illustration the number in Input brackets after the item details which part For example 100 240V a c 2 4A max 50 60Hz with the table in its normal configuration and at minimum heig
65. irections and confirm the amount of movement agrees with that in the technical data section using a digital protractor Return the table top to level with the auto level button See caution above Operate the table into maximum Trendelenburg in both directions and confirm the amount of movement agrees with that in the technical data section using a digital protractor Return the table top to level with the auto level button Operate the table to maximum traverse in both directions and confirm the amount of movement agrees with that in the technical data section See caution above Operate the table to maximum and minimum height and confirm the heights agree with those in the technical data section See caution above Operate the table into maximum break in both directions and confirm the amount of movement agrees with those in the technical data section using a digital protractor Return the table top to level with the auto level button See caution above Operate the table into maximum Flexion and maximum Extension and return the table top to level with the auto level button Lower both head and leg section fully ensure the table is braked and switch it off Leave batteries on charge if they are not fully charged P48 54 6 8 ACCESSORIES Most accessories are basic in nature and part replacement is not usually required Servicing is covered for similar items in the preceding sections e g guide pin replacement C
66. l see Fig 6 9 Using a slot head screwdriver of a suitable size rotate the switches to the required new control code note each switch can be set to a hexadecimal setting of 0 Switch 1 is the first part of the two digit code iv Amend the label on the handset to reflect the new setting as clearly as possible in the space provided and delete the old code v Checkall connections and reassemble the handset using the new screws and tighten them to a torque setting of 0 5Nm as detailed in 6 6 19 2 iii v noting that the new seal is required to maintain the IP rating Test that the table responds correctly to the re coded handset T SM47j 6 6 23 6 6 23 1 The Handsets not contain serviceable parts but the infrared handset batteries and the spring clips on either unit can be replaced If servicing the infrared handset service kit 111040 or 111745 see Note in section 6 6 19 2 contains allthe parts required Proceed as follows Handset service i Replace batteries in the infrared handset as 6 6 19 2 ii Replace the handset spring clip by removing the old and replacing it with a new one using new screws and tighten them to a torque setting of 0 5Nm Do not use threadlock 6 6 24 6 6 24 1 Processor PCAs should not be replaced as a separate item they must be changed together with and as part of the main actuator PCA only Processor PCA 6 6 25 Standby panel and loom 6 6 25 1 If the standby panel is no
67. l covers in the reverse of the sequence above checking that the bellows have been correctly positioned in their top and bottom clamps Use threadlock part number 670650 on all screws vii Testthatthe bellows work correctly by moving table through several complete sequences of extreme tilt and Trendelenburg movements use handset not standby panel 6 2 4 Telescopic covers 6 2 4 1 Removal of telescopic covers CAUTION Ensure the ribbon cable from the standby control panel and the earth wire are released during removal of covers see v and vii below To remove the telescopic covers completely from the column proceed as follows but note that access to the column can be gained by releasing the telescopic covers not removing them see sections 6 2 3 2 and 6 2 3 3 Raise the height of the tabletop sufficiently to expose the screws at the lower edge of the lowest telescopic section where it joins the base covers ii Remove the two screws from lower edge of each side of the lowest telescopic cover not the end face screws See note in 6 2 3 2 ii iii Remove fourteen plastic rivets see inset of Fig 6 1 for details around the lower edge of the bellows iv Lift the bellows to the left and right of the accessory and switch panels items 8 and 9 of Fig 6 1 and remove the four screws securing the top edge of the upper telescopic cover to the telescopic cover support brackets item 6 of Fig 6 1 v Lower the tel
68. leaning and disinfection is the same as for the main table and is covered in the Instructions for use supplied with the product T SM47j APPENDIX 1 TORQUE CONVERSIONS In the text ofthis document torque values are all detailed in Nm Ifthe torque tools being used are imperial use the chart below to convert the values to either Ib in or lb ft as required Always ensure that the equipment in use is both calibrated and that this calibration is valid i e it has not expired For accuracy the following conversion factors can be used 1Nm 8 85 Ib in 0 7375 Ib ft 50 40 2 304 2 e 5 5 o 5 20 5 e 5 E 10 0 10 20 30 40 50 60 Torque setting in Nm T SM47j P49 54 ESCHMANN APPENDIX 2 APPLICATION SOFTWARE GUIDE When some parts are replaced it will be necessary to reprogram reconfigure or recalibrate the table PCAs The following list provides guidance on which parts and what actions need to be taken when these parts are changed After reassembling the table but before refitting covers especially the short trunk black top in some cases the table should be connected to a PC boards and protractor if required to enable the following procedures to be followed Consult the Application Software Manual Three actuator 3 axis PCA Program 3 axis controller Configure 3 axis controller Calibrate break right Calibrate break
69. llars bearings and pins if removed Reassemble table replace covers as section 6 2 2 2 and check all base functions for correct operation 6 3 6 Brake pads To change the brake pads when worn or hard and becoming brittle refer to Fig 6 2a or 6 2b as applicable and proceed as follows Remove the head end base cover as detailed in section 6 2 2 2 and then replace the wheel foot pedal see note in 6 2 2 2 iv Raise the table at the head end onto its castors wheel orientation Always change both brake pads and use threadlock part number 670650 on screw If applicable ensure the spacer is replaced SN T2AC or later only Remove wheel foot pedal replace covers as 6 2 2 2 and check table base function P25 54 Torque settings ____ M10 x 40mm screws securing item 1 to item 2 40Nm Castor screws 4Nm Base plate Column assembly Brake pad Front wheel Castor pillar Castor pillar spacer Castor plate front Damper angle bracket Castor plate rear Pedal damper Pedal anchor block Catch block Pedal spindle bush Pedal anti skid pad Front pedal spindle assembly Resistor assy static discharge Lifting wheel axle front Castor pillar bush Brake pedal front castor Castor insulation pad Rear pedal spindle assembly Castor Lifting wheel axle rear Isolating bush and special washer Lifting roller assembly M10 Washer Brake pedal rear wheel Special neoprene washer Note Item 28 no longer fi
70. lows rivet removal replacement detail To remove rivets A a Pull up plunger head see do not damage rivet head b Pull rivet out of cover see replace rivets RSS amp n SAAS CT Wu 222 a Align holes in cover sections see b Placerivet in hole so that shoulder of rivet shaft is flush with outer cover face see B Pressrivet plunger head until flush see Base cover front Accessory panel and loom Base cover rear Switch panel and loom Upstand assembly Bellows retainer top 4 Telescopic cover assembly Top of column cover Bellows Top of column end cover 2 Telescopic cover support bracket 2 Top of column side cover 2 Switch panel retainer 2 Cover crossbeam side 2 Fig 6 1 Table covers general arrangement P22 54 T SM47j v Test that the bellows work correctly by moving table through several complete sequences of extreme tilt and Trendelenburg use handset not standby panel 6 2 3 5 of column access Remove the steel covers items 12 13 and 14 of Fig 6 1 surrounding the top of the bellows two screws per side cover three screws end cover ii Remove twelve screws holding the four top bellow clamping strips item 10 of Fig 6 1 in place This will release the top of the bellows allowing them to be lowered gaining access to the top of the column On completion of work on the top of the column replacing the bellows and stee
71. lso has a footswitch test footswitch by operating the table using all the footswitch functions in sequence 6 7 6 Standby control panel CAUTION Do not power the table into combined tilt and Trendelenburg orientations from the standby control panel Operate the table from the standby control panel by using all of the available motions in each direction levelling the table approximately after each motion 6 7 7 Sections head and leg Check that the head and leg sections fit correctly to the trunk sections that all release buttons are working correctly that each section can be adjusted to the amount shown in the Technical Data section using a digital protractor and that they lock securely in several different positions P47 54 ESCHMANN 6 7 8 Base pedals Operate each base pedal to ensure it functions correctly that motion is correctly damped by the spring damper and that the return spring is in situ and working correctly 6 7 9 Cycle of movements CAUTION During the following cycle of movements designed to test all table functions note that extreme care must be taken not to damage the table when powering the table to maximum movements e g with table at minimum height maximum Trendelenburg cannot be achieved and with leg section fully lowered minimum height cannot be achieved 1 Press the autolevel button until the table top has returned to level Operate the table into maximum tilt in both d
72. maintenance procedure part replacement adjustment calibration etc the table should be tested for function as follows 6 7 1 Batteries Check that both sets of batteries are charged by checking the corded handset LEDs they should be green If either of the battery charge LEDs show amber or red place batteries on charge leave table with batteries on charge at the end of the function test if both LEDs have not changed to green 6 7 2 Battery charger Check that when plugged into the mains the battery charging light shows red or amber it will only show a green LED after a two hour top up battery charge Also note Caution in section 1 0 6 7 3 Corded handset If the table has a corded handset operate the table through the cycle of movements detailed below in section 6 7 9 to test all the table functions and the corded handset 6 7 4 Infrared handset If the table also has an infrared handset and the table movements have been tested using a corded handset as above test the infrared handset by operating at least a third of the functions briefly from the infrared handset If the table movements have not been tested using the corded handset operate the table through the cycle of movements detailed below in section 6 7 9 to test all the functions using the infrared handset Check that the infrared handset operates the table up to 1 5 meters 6 7 5 Footswitch control If the table a
73. n cover to gain access to the four top of column cap head screws and remove them Lift the complete wrapround assembly up and off of the telescopic column assembly and carefully place to one side leaving it in a stable position not resting on any fragile components Using suitable blocks jack up the table base keep blocks clear of castors and wheels to obtain access to the underside of the table base plate Remove the four cap head screws that secure the telescopic column assembly to the table base plate Note the orientation of the telescopic column assembly by noting position of leads at the top of the assembly and remove it from the base plate Replace the new telescopic column assembly apply threadlock part number 670650 to the screws and tighten to 40Nm T SM47j ji UBD pue GOO ul SEM JOSUSS 995 10sues 19945 uone nsu p Jo YL jo mou do Jo ow MIL soyenjoe quiesse pues pasn 10 Joyenjoe 5 OLIN Buueeg dio soyenjoe soyenjoe 01 WOO usng uoneoo uoneoo 401 quiesse
74. nsure that Lead screws M10 set screw 20Nm the grommet strip is in place in Actuator arms M8 csk screw 14 Nm the cable and conduit slot of Sidebar screw 21Nm items 3 and 11 Black top M6 csk screw 6 Nm All M8 button head screws 10Nm All Torx cover screws 0 5Nm 15 Side rail short trunk UK Attachment block left hand Black top short trunk Spring compression Cover bottom short trunk left hand Push button R clip Side arm short trunk right hand Bearing Break gearbox assembly left hand Spring compression Side arm short trunk left hand Plunger for push button Mattress retainer Attachment block right hand Cover short trunk Push button blade Break potentiometer loom Break gearbox assy right hand Motor Cover bottom short trunk right hand Fig 6 6 Table short trunk general arrangement P38 54 T SM47j vii Continue to reassemble the table by reversing the above use threadlock part number 670650 on screw threads and note any applicable torque values shown on Fig 6 5 and 6 6 Ensure all electrical connections are remade and all looms are secured as found and carry out a full function test 6 5 2 5 Side rails To replace a long or short trunk side proceed as follows traversing the table fully cranially as required to gain access to the fixing screws Remove the screws securing the side rail from beneath the table top on the inside edge of the side arms items 15 an
75. oading and table position as detailed below Trendelenburg 1 4 60s 240s at a maximum torque of 417Nm e g 135kg load offset 31cm from the fulcrum or a 300kg load offset 14cm from the fulcrum Where this load is the patient and accessories weight and the offset is how far the loads centre of gravity is from the centre of the column Traverse 1 4 60s 240s when the table is horizontal and at the maximum load of 300kg or at 17 5 with a patient weight of 225kg or at 35 witha patient weight of 150kg Break 1 10 60s 600s at maximum patient weight of 300kg Height 1 4 60s 2405 at maximum patient weight of 300kg not offset Tilt 1 4 60s 240s at maximum patient weight of 300kg Note The duty cycles above are all for the worst case i e maximum loads For reduced loading the above duty cycles can be increased 2 6 Classification and symbology All the symbols used on this table are shown and explained in the Instructions for Use These detail the safety category and class of this table as marked on the table or section by the use of these symbols 2 7 Use conjunction with other equipment 2 7 1 Electrosurgical equipment The T20 a operation table has been designed to minimise the possibility of accidental electrosurgery burns and can be used in conjunction with electrosurgical equipment However contact with any metal surfaces e g table side bars or other equipment etc can c
76. ons from the break potentiometer loom and connections from the break motor where they join the break motor loom iii Remove the four M8 countersunk screws securing the short trunk in place two either side and remove the short trunk by sliding the gearbox arms out of the long trunk Remove the set screws securing the end of the lead screws items 13 of Fig 6 5 and remove the black top items 17 of Fig 6 5 from the long trunk section v Remove the black top location dowels from the break attachment blocks items 11 and 14 of Fig 6 5 and all the button head screws vi Whilst supporting each side arm in turn withdraw the break attachment blocks Slide out the traverse rods and knock out the traverse rod bearings viii Carefully replace the new set of bearings and reassemble the table by reversing the above use threadlock part number 670650 on screw threads see note on Fig 6 6 and note any applicable torque values shown in Fig 6 5 6 6 and 6 7 e g lead screw set screw 20Nm black top screws 6Nm Ensure all electrical connections have been made ix Test all table functions P39 54 ESCHMANN 40 54 Limit switch arrangement for later model tables 14 28 12 Traverse crossbeam assy fixed top Pulley Igus bearing Traverse bearing housing Top connector assy Belt Bearing Traverse nut Traverse nut housing Cover crossbeam top Traverse limit switch pin Travers
77. ontinue to lower the telescopic covers and if required i e if table is near maximum height disconnect the earth wire from the middle telescopic cover where it is connected to the wrap round On completion of work on the lower mid column replace the column covers in the reverse of the sequence above check the electrical connections have been made correctly during assembly Use threadlock part number 670650 on all screws vi Test the telescopic covers and standby panel function correctly by powering table between maximum and minimum height several times and testing other standby buttons 6 2 3 4 column access i Remove fourteen plastic rivets see inset of Fig 6 1 for details around the lower edge of the bellows Liftthe bellows to the left and right of the accessory and switch panels items 8 and 9 of Fig 6 1 and remove the two screws securing each switch panel retainer item 7 of Fig 6 1 to the telescopic cover support brackets item 6 of Fig 6 1 iii bellows can now be raised but take care not to lift then too far without disconnecting the loom connections from the switch panels where they connect to the column PCA iv completion of work on the upper mid column replace the column covers in the reverse of above sequence check thatthe electrical connections have been remade correctly during assembly Use threadlock part number 670650 on all screws P21 54 ESCHMANN Bel
78. op of the tilt actuator Release the electrical connections as required and ensure the loom from the connector block is free from any fixing to the table P32 54 iii Remove the connector assembly block two screws and release the tilt potentiometer iv Remove two screws at one junction of tilt frame end beam and a tilt frame side beam Then remove the two screws diagonally opposite at the other junction of tilt frame end beam and tilt frame side beam v Slide off and remove the two pairs of tilt frame end and side beam assemblies vi Remove two screws at each junction of the Trendelenburg frame beams and slide off the two Trendelenburg frame assemblies vii Note orientation and carefully tap out both tilt frame headed bushes always change as a pair from the Trendelenburg frame replace them with new bushes Reassemble by reversing the above using threadlock part number 113042 on all tilt and trend gimbal frame screws and threadlock part number 670650 on all other screws and grease part number 110477 on bearings and actuator pins Ensure all loom cables are replaced as found clear of all moving parts Check Appendix 2 and proceed as detailed in the Application software manual before replacing covers Finally test all table functions 6 4 7 Trendelenburg bush Note the warning in section 6 2 5 before continuing To replace a Trendelenburg bush item 116 of Fig 6 3 refer to section 6 4 6 proce
79. or directly from the batteries if movement is near to either end of its limit without ensuring that the direction of movement is away from that limit 6 6 1 The following parts may need replacement in the event of failure see notes below in each section for test details prior to removal The procedures for replacement are detailed in the following sections 6 6 2 Three actuator PCA 6 6 3 Four actuator PCA 6 6 4 Infrared receiver PCA 6 6 5 Power supply assembly 6 6 6 Traverse motor 6 6 7 Break motor 6 6 8 Tilt and Trendelenburg motors 6 6 9 Telescopic column assembly 6 6 10 Break potentiometer loom 6 6 11 Tilt potentiometer loom 6 6 12 Trendelenburg potentiometer loom 6 6 13 Height potentiometer loom 6 6 14 Traverse motor loom amp m switches 6 6 15 Connector block assemblies amp looms 6 6 16 Switch and accessory panel looms 6 6 17 Column energy chain and loom 6 6 18 Break gearbox loom 6 6 19 Batteries 6 6 20 Fuses 6 6 21 Table infrared code change 6 6 22 Infrared handset code change 6 6 23 Handset service 6 6 24 Processor PCA 6 6 25 Standby panel and loom During part replacement ensure that all assembly notes are followed with respect to lubrication and torque values The chart in Appendix 2 gives a guide on what aspects need to be considered in terms of programming configuring and calibration for most items that may need to be replaced Also note Appendix 3 the schematic diagrams and Appendix 4 Elec
80. ose the screws at the lower edge of the lowest telescopic section where it joins the base covers ii Remove the two screws from the lower edge of each side of the lowest telescopic cover not the end face screws Note These screws differ in length and must be put back as found short 12mm to short trunk end long 15mm to long trunk end T SM47j ii Raise the telescopic covers to gain access to the lower part ofthe column iv Oncompletion of work on the lower column replace the four lower retaining screws to secure the telescopic covers to the base v Test that the telescopic covers function correctly by powering the table between maximum and minimum height several times 6 2 3 3 Lower mid column access CAUTION Ensure the cable to the standby control panel and the earth wire is released before lowering the telescopic covers see iii and iv below i Remove fourteen plastic rivets see inset of Fig 6 1 for details around the lower edge of the bellows Lift the bellows to the left and right of the accessory and switch panels items 8 and 9 of Fig 6 1 and remove the four screws securing the top edge of the upper telescopic cover to the telescopic cover support brackets item 6 of Fig 6 1 iii Lower the telescopic covers slowly until sufficient access has been gained behind them to allow disconnection of the ribbon cable from the standby control panel where it connects onto the column PCA iv C
81. over These are held in place with two plastic rivets simply pull out the rivet to release the PCA the mount will remain on the cover iii Replace the new and secure in place with the two rivets reassemble and carry out a full table function test To replace a four actuator PCA item 23 of Fig 6 3 proceed as follows Gain access to the upper column as detailed in section 6 2 3 Switch panel loom Accessory panel loom Column energy chain loom Cover support bracket r h Cover support bracket I h Power supply assembly see above Mains indicator panel loom Standby panel loom 4 2 3 4 5 6 7 8 Fig 6 8 Table base main electrical components P42 54 T SM47j 6 6 5 Power supply assembly 6 6 5 1 The power supply assembly item 6 of Fig 6 8 is replaced as a complete unit 6 6 5 2 Remove the long base cover as detailed in section 6 2 2 6 6 5 3 To replace the complete Power supply assembly remove all external connections to the PSU mains connection and energy chain loom Remove the complete Power supply assembly by releasing the screws that secure it to the table base Replace the new Power supply assembly and reconnect all the looms 6 6 5 4 Reassemble the table and carry out a table function test 6 6 6 Traverse motor 6 6 6 1 Prior to changing a traverse motor ensure that the unit has failed and not the control circuit by placing 24V directly from the batteries in the table base across
82. p To achieve this position first note the safety warning in section 4 1 Remove as much as possible from the table top e g leg and head sections accessories and mattresses etc Remove the top of column steel covers items 13 and 14 of Fig 6 1 Remove the four M10 screws each side that secure the trunk sections to the pedestal not the M6 cap head screws that can be seen passing through the oilite bushes on each side and allow the trunk section to pivot short trunk down about the oilite bush pivots item 16 Fig 6 3 Extreme care should be taken at all times with the table in this position especially during transition into and out of the Service Position Use tool number T2203 to maintain contact between the connector blocks if required when the table is in the Service Position When returning the table out ofthe Service Position ensure the eight M10 screws are tightened to the correct torque and that the covers are replaced 1 10 The Instructions for use provided with the table contain all the cleaning disinfection and care instructions consult this for these aspects as they are not duplicated in this manual CAUTION Continued use of the table batteries when critically can damage the batteries Charge batteries regularly to maintain peak performance Do not remove the table from charge until both charging LED s are green to avoid false battery level indication on the handset P5 54
83. p m switches 45 6 6 15 Connector blocks amp looms 45 6 6 16 Switch amp accessory panel looms 45 6 6 17 energy chain and loom 45 6 6 18 Breakgearboxloom 46 6 6 19 Batteries table 8 handset 46 6 6 20 FUSES anna mern 46 6 6 21 Table infrared code change 46 6 6 22 Infrared handset code change 46 6 6 23 Handsetservice 47 6 6 24 Processor PCA 47 6 6 25 Standby panel andloom 47 6 6 26 Battery management reconditioning 47 67 Functiontests 47 6 7 1 Batteries 47 6 7 2 Battery charger 47 6 7 3 Cordedhandset 47 6 7 4 Infrared handset 47 6 7 5 Footswitch control 47 6 7 6 Standby controlpanel 47 6 7 7 Sections head leg 47 6 7 8 pedals 48 6 7 9 Cycle of movements 48 6 8 Accessories 48 4 54 Figures 1 0 Identification of main parts 6 21 Major dimensions and movements 10 22 Maximumpatientweights 11 23 Maximum patient weights 12 3 1 Schematic diagrams 15 61 covers general arrangement 22 6 2a Table base general arrangement ext l catch
84. p location angles item 15 of Fig 6 3 and carefully remove the bellows by lifting them up and off the top of the column 6 2 5 2 Replacing the bellows Replace the bellows by reversing the removal sequence ensuring that the trunk sections are replaced in the correct orientation short trunk section at leg end Note that the four M10 fixings screws should be tightened to a torque setting of 48Nm Also ensure that the sprung electrical contact pins on the underside of the long trunk section are not damaged use threadlock part number 670650 on all screws except those securing the switch panel and the accessory panel Check that the bellows have been correctly positioned in their top and bottom retainers and that they work correctly by moving table use handset not standby panel through several complete sequences of extreme tilt and Trendelenburg movements Test that the telescopic covers move correctly by powering the tabletop up and down from minimum to maximum several times 6 3 TABLE BASE COMPONENTS 6 3 1 The following parts on the table base may need replacement in the event of wear damage or malfunction see notes in each section for the Power supply assembly see section 6 6 5 The procedures for these are detailed in the following sections 6 3 2 Batteries 6 3 3 Pedal dampers 6 3 4 Front wheels 6 3 5 Castors 6 3 6 Brake pads 6 3 7 Castor pillar bushes 6 3 8 Pedal spindle bushes 6 3 9 Lifting roller assembly 6
85. p on handset must match side type see Instructions for Use Note For location of the Serial Number plate see inside front cover T SM47j P7 54 ESCHMANN 2 0 TECHNICAL DATA 2 4 Table loadin See maximum patient weight distribution charts in Fig 2 2 2 1 _ Weights and 2 3 for various table positions and orientations The nominal weights of the standard table components Maximum section loading is stated on each item and is are listed below for mattresses detailed below for reference Leg section without mattress 11 50kg Leg section 44kg L Head section 7 T 22kg eg section mattress js 2 75kg A For accessories the maximum loading is stated on each Head section without mattress 7 75kg item and detailed in the User Handbook supplied with them Maad Sechan matrasse 7 7 20080 For specific notes on the obese patient see the Instructions Table base and column only 192 00kg for Use Long and short trunk assembly 55 75kg Long and short trunk mattress 2 7 25kg 2 5 Electrical Total weight standard table 5 2 2790 251 Antistatic requirements Lightweight leg section 4 50kg m Footrest incl tt 7 00k The table has an antistatic pathway from the table top ootrest incl mattress U U i FR through an internal resistor to the castors Width extender incl mattress 6 00kg Perineal instrument tray ds 3 00kg CAUTION without mattress To complete and ma
86. reak arms in the short trunk move up and down together If required replace adjust or recalibrate 6 5 2 3 and 6 5 2 4 27 Service infrared handset 6 6 23 Check function and condition of corded handset 28 Check that all side rail fixing screws are tight in the long and short trunk sections 21Nm and the head and leg sections 15Nm 29 Checkthe condition of the trunk section covers 6 5 2 6 and 6 5 1 3 30 Ensure tabletop is not in the service position and the locking screws are replaced to lock the trunk sections out of the service position 31 Ensure free movement of the telescopic covers Check condition and function of Standby control panel replace if adhesion to column cover shows any sign of failure 6 6 25 32 Ensure the base covers are refitted 6 2 2 2 33 Conduct the function tests 6 7 correct any faults and conduct the function tests again until all functions are working correctly Head and leg sections 34 Check all guide pins for wear or damage 6 5 1 1 35 Check gas springs for leaks or poor performance 6 5 1 2 36 Check gas spring pivot pins and shoulder screws for security and wear 6 5 1 4 36 Check the condition of the head and leg section covers 6 5 2 6 and 6 5 1 3 Ensure the Electrical safety checks have been carried out see Appendix 4 of the Service Manual Leave table clean and in a fully functioning condition with batteries on charge and table switched off
87. rocedure is provided where required Note these sections also contain assembly notes that must be followed 6 1 8 All part numbers can be foundiin the Illustrated parts list Publication number T IPL35 available from Eschmann Equipment at the address on the inside of the front cover This Illustrated parts list should be available for reference during part removal or replacement 6 1 9 The locking catch for foot pedals can be external or internal Please check which type is fitted to the table and follow the appropriate notes in the sections that follow The external catch is shown in Fig 6 2a item 20 and the internal catch is shown in Fig 6 2b item 6 5 1 9 Tables with a Serial Number prefix T2AC or later have been increased in height by 5mm Check that the correct parts are fitted by referring to the Illustrated parts list Fig 6 2b and Fig 6 2c shown both configurations 6 2 TABLE BASE amp COLUMN COVERS 6 2 1 The removal replacement and method of gaining access behind the table covers has been split into the following sections for easy reference 6 2 2 Base covers 6 2 3 Access to column 6 2 4 Telescopic covers 6 2 5 Bellows For reference Fig 6 1 shows the general arrangement of all the cover components 6 2 2 Base covers CAUTION Ensure the cable to both of the infrared PCA s are released before sliding the base covers away from the base see v below 6 2 2 1 i Raise the height of the tabletop sufficien
88. rol electronics 6 6 6 6 6 9 NOTES 5 Inthe sections below where the word check is used Thenimbersinbracksfsinihisschedile deisileihe itis inferred that if the check reveals a fault then this section of this manual that should be referred to when Soule 7 performing or checking the activity detailed 6 Tilttabletop into service position as required 1 9 but 2 Prior to service operate all table functions 6 7 to note wating SEGBOI AS ensure correct operation any problems for 7 The right hand column should be used to tick off each investigation during the service item of the schedule on completion and to note parts 3 Remove base covers as required 6 2 2 1 Access can gained to the lower lower mid upper mid and 8 This schedule should be photocopied and completed top of the column 6 2 3 2 to 6 2 3 5 If necessary the copies to be retained by the engineer conducting the telescopic covers can be removed 6 2 4 1 service and the person responsible for the table Base and column 1 Check pedal dampers for wear or leaking 6 3 3 2 Disassemble clean and lubricate the two fixed wheel assemblies and the four castor assemblies 6 3 4 6 3 5 Test resistor assembly as 6 3 5 1 viii 3 Check brake pads for wear damage or hard and brittle 6 3 6 4 Check the castor pillar and pedal spindle bushes for wear 6 3 7 and 6 3 8 5 Check and lubricate both lifting roller a
89. runk sections may tilt dramatically unless the sections are fully supported during screw removal Always lower the trunk sections into and out of the Service position slowly and always return the table trunk sections to the normal position taking care not to trap fingers as soon as possible replacing the eight M10 screws securely Also remove the following before placing the table into the Service position Head section Leg section Trunk mattress All accessories When powering the table in the Service position using tool T2203 to connect the table top connector blocks extreme care should be taken and powering the table in this position should be limited to essential testing only It is preferable to return the table out of the Service position before powering the table 4 2 Lifting During some the procedures detailed in this manual it is necessary to lift heavy assemblies These are the long and short trunk assembly the wrapround assembly and the telescopic assembly These all require two people to lift safely and any procedure that requires these to be removed from the table should not be attempted if two people are not available Other components although not heavy enough to require two people should be handled using the correct lifting techniques to minimise personnel injury It is advised that suitable protective footwear is worn when handling heavy parts 4 3 When removing the four M10 hexagon
90. s bearings and pins Reconnect the static discharge assembly to the base plate and earth lead if removed Check function of pedal latching mechanisms Check for a nominal resistance of 6 6 between atable side rail and the surface of the castor wheel to which the resistor assembly item 22 of Fig 6 2 is connected to ensure that the static path has not been compromised or gt 100MQ on other castors Reassemble table replace covers as section 6 2 2 2 and check all base functions for correct operation 6 3 5 2 Castor wheels If feplacing the castor wheels only proceed as follows lt To replace the leg end wheels raise both base pedals remove the leg end base cover as detailed in section 6 2 2 1 and then change the leg end wheels as below in parts iii v If required i e changing the head end wheels refer to 6 3 5 1 follow parts ii vi and remove the head end castor plate assembly then replace the head end wheels as below in parts iii v Remove the nut from the wheel spindle and replace the wheels as a pair part number 110900 2 per castor If replacing the washers as well use 3 washers part number 710704 only Use threadlock part number 670650 on nut thread Reassemble the table by reversing the above ensuring that the following points are observed a Correct positioning of all components b Usethreadlock part number 670650 on all threads c Reapply grease part number 110477 to castor pi
91. s supplied directly from the T20 a 5V power supply The handset contains a DC DC converter to supply 3 3V for the keyboard decoder There are indicator LED s to show the charge status of the table batteries main and standby P14 54 T SM47j PROCESSOR CONTROL FET DRIVERS OVER CURRENT MANAGER POSITIONAL FEEDBACK CONTROL FROM HOST MICRO Basic control and feedback all actuator drivers POSITION ENCODERS AND ANCILLARIES OVER CURRENT MANAGERS POWER CONNECTORS MANAGEMENT INC CONNECTORS amp INTERFACES MICRO CONNECTORS Four Actuator PCA POSITION pi AXIS TRAVERSE H MONITORS E zul OVER CURRENT MANAGERS si POWER MANAGEMENT Three actuator PCA PROCESSOR COMMUNICATIONS INTERFACE CONNECTOR 64 WAY Processor PCA Keyboard Battery Power Management Keyboard Encoder Infrared Driver Emitter Handset remote version Keyboard Connector Lead Power Management Keyboard Encoder RS232 Decoder Driver Handset corded version Fig 3 1 Schematic diagrams T SM47j P15 54 ESCHMANN 4 0 SAFETY WARNINGS 4 1 Service position When the four M10 screws each side that secure the trunk sections to the pedestal are removed to place the table in the Service position as detailed in section 1 9 always take extreme care and ensure table is switched off before tilting top into or out off the Service position When the M10 screws are removed the table t
92. ssemblies 6 3 9 6 Check for wear of both pedal catch mechanisms 6 3 12 and renew the anti slip pad on both pedals 6 3 11 7 Check security of all fixing screws nuts and retaining clips within the base area and check the pedal operation works smoothly and correctly 8 Check main and standby battery voltage standby and load as 6 3 2 iia Check security connectors and loom routing of PSU 9 Check the Trendelenburg tilt and telescopic column actuator assemblies for excessive wear or failure 6 4 2 6 4 3 6 4 4 and 6 4 5 and grease worm and wheel on Trendelenburg and tilt motor assemblies 10 Check the security and positioning of all wiring looms and connections Add cable ties reposition or replace as necessary 11 Check switch and fuse panels for operation and signs of damage 6 6 16 12 Check for wear or damage to the tilt and Trendelenburg bushes in the trend and tilt frame 6 4 6 and 6 4 7 Check all fixing screws within the inner and outer tiltand Trend gimbal assemblies 13 Check the wraparound aligning bearing pads adjust as required to remove play or replace 6 4 8 14 Check height potentiometer is secure to the wrapround and that the cable is in good condition and secure to the base 6 6 13 15 Check the security and the routing of the 4 actuator PCA connectors energy chains and all looms within the column Cable tie if necessary 16 Remove and replace bellows if split damaged 6 2 5 17 Ch
93. ssembly in the event of wear or damage refer to Fig 6 2a or 6 2b as appropriate and proceed as follows noting that the procedure is similar for all castors If replacing the wheels only refer to 6 3 5 2 vi vii Ensure both pedals are in the raised position Remove the appropriate base cover as detailed in section 6 2 2 1 Remove the appropriate damper angle bracket and at the leg end remove the two fixing screws in each of the two outer pedal anchor blocks In the case of the head end remove the two fixing screws in the outer pedal anchor block only If required remove the connection from the static discharge resistor assembly where it joins the table base and or the earth lead connection Slide the pedal spindle and lifting wheel assembly away from the remaining pedal anchor block and clear of the table base Lift the castor plate assembly up and off of the castor pillars Remove the faulty castor from the castor plate four screws Note position of the isolating bushes special washers and insulation pad Replace the new castor by reversing the above ensuring that the following points are observed a Correct positioning of all components and refer to note on Fig 6 2b T SM47j viii Use threadlock part number 670650 on all threads and tighten castor screws to 4Nm Do not overtighten as this can compromise the insulation properties of the insulation pad Reapply grease part number 110477 to castor pillar
94. st probe disconnected from the table the DVM should read the same as noted in 3 7 3 10 If readings above too high this could be that a long mains cord is in use if too low this could be mains supply is not on mains fuses in table have blown fuse in mains plug has blown connection of equipment incorrect or there is a fault in the table mains wiring has failed open circuit 3 11 Repeat sections 3 5 3 9 above but connect the Enclosure leakage test probe to the middle two column covers simultaneously instead of to the side rail T SM47j DISCOVER NEW INNOVATION NEW TECHNOLOGY DISCOVER ESCHMANN Eschmann Equipment Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 753322 Fax 44 0 1903 875789 www eschmann co uk
95. t device vi off the mains power whenever possible to reduce risks 4 6 Gas springs When removing or servicing the table head and leg sections gas springs refer to the warning in section 6 5 1 2 They do not require lubrication and do not attempt to open them Also note the disposal notes provided in 6 5 1 2 vii 4 7 Hot parts on PCAs During service and when covers are removed note that parts of the PCAs can become hot enough to cause burns Beware that touching these assemblies when hot could result in unexpected body movements 4 8 Biological contamination During servicing of the table it is advised that protective gloves should be warn to avoid biological contamination It is preferable that the table be cleaned and disinfected before service 4 9 When connecting test leads to the table during service ensure that these do not constitute a tripping hazard 4 10 Leaking batteries In the unlikely event of a battery leaking in the table base avoid spreading the contamination sulphuric acid and i Wear suitable personnel protection goggles gloves etc do not smoke and avoid sparks ii Use a bonding agent such as sand or sodium carbonate to absorb and neutralise the bulk of the electrolyte Wash and rinse well the contaminated area with water taking care not to splash electronics or any other table base components ii Do not flush electrolyte into the sewer system but dispose of the used bonding agent and
96. t functioning correctly or if the adhesive is showing signs of lifting away from the cover it should be replaced as follows Lower the telescopic covers as detailed in section 6 2 3 2 disconnect loom from the panel ii Remove the old standby panel by peeling it off the cover and then remove any old adhesive from the column cover Clean the cover well ensuring it is free from any dirt dust or grease iii Adhere the new standby panel by removing the adhesive backing paper and pressing it firmly into place iv Reconnect the loom reassemble refer to section 6 2 3 2 and fully test the function of the new standby panel 6 6 26 Battery management reconditioning Battery management system reconditioning must be performed if the inline battery fuses or the batteries are disconnected for longer than 60 seconds or the table is stored without charging for an extended period of time The system is reconditioned by fully charging the batteries so that both LEDs on the base turn green followed by discharging the table fully i e until the main battery indicator on the handset turns red The table can then be fully charged and used as normal The process of fully discharging the batteries can be achieved during normal use although the handset indication will not give the true indication of battery capacity on this first discharge i e LED may go from green straight to red T SM47j 6 7 FUNCTION TESTS Before and after any
97. te Fig 6 3 and replace them with the new loom assembly Ensure the loom is replaced as found and connect to the four actuator PCA 6 6 11 4 After reassembling the table using threadlock part number 670650 on all screws the new potentiometers must be calibrated check Appendix 2 and proceed as detailed in the Application software manual 6 6 12 Trendelenburg potentiometer 6 6 12 1 The tilt and Trendelenburg potentiometer looms must be changed as a pair they are on the same loom See 6 6 11 1 above for details 6 6 13 Height potentiometer loom 6 6 13 1 To replace a height potentiometer loom see note in 6 6 1 raise the height of the table to make access easier and then gain access to the column as detailed in 6 2 3 6 6 13 2 Remove the connection on the four actuator PCA from the height potentiometer loom then release see note below the lower end of the height potentiometer cable from the base plate and allow it to slowly retract back NOTE DO NOT ALLOW CABLE TO SNAP BACK 6 6 13 3 Finally remove the height potentiometer assembly item 17 of Fig 6 3 from the lower edge of the wrapround assembly P43 54 BUTTON REFERENCE FUNCTION nn amp ACTION Trendelenburg B1 Trendelenburg B2 Reverse Trendelenburg B3 Down B6 Right down B7 Down Traverse B9 Cranially B4 Up YESCHMANN ran UIP MENT Eschmann Equipment Peter Road Lancing West Sussex BN
98. te assembly it may be necessary to use shims Torque settings item 26 If pedal can be pressed past the locking M10 x 40mm screws securing point too easily then add a shim If too many shims item 1 to 2 40Nm are added the pedal may be difficult to release Castor screws 4Nm Base plate Column assembly Brake pad Front wheel assembly Castor pillar Catch assembly Standby battery tray Front castor plate spacer Brake pad spacer Headed bush M10 nut Disc spring Rear pedal spindle assembly Castor insulation pad Rear castor plate assembly Front pedal spindle assembly Castor pillar bush Front castor plate assembly Rear pedal shaft spacer Static discharge connector Static discharge resistor assy Front pedal shaft thrust ring Castor Rear damper anchor bracket Rear pedal Isolating bush Front damper bracket Front pedal Special washer Damper Front castor plate shim Hex hd set bolt Damper clevis pin Castor plate Lifting roller assembly Pedal anchor block M10 x 50mm Screw Lifting roller spindle or use clip supplied as part of Damper Fig 6 2c Table base general arrangement internal pedal catch and increased height Serial Numbers prefixed T2AC or later 1 2 3 4 5 6 7 8 9 P28 54 T SM47j 6 3 7 Castor pillar bushes To replace the castor pillar bushes if worn refer to Fig 6 2a or 6 2b as applicable and proceed as follows i Remove the applicable castor plate assembly as detailed in section 6 3 5 1 p
99. ter to vent the gas Clean up any oil spillage 6 5 1 3 Top cover To replace a top cover if damaged proceed as follows i Remove section from table and rest it on a suitable work surface upside down ii Remove the four M8 screws six on the leg section that secure the sidebars ii section over and remove the mattress retainers iv Carefully release the lower edge of the cover each side and flex the cover from the middle do not bend out the sides see diagram Replace cover with the new one and replace the mattress retainers using threadlock part number 670650 on the screw threads v 1 v v Replace the sidebars and secure using threadlock part number 670650 on the screw threads and tighten to a torque setting of 15Nm Finally check section function P33 54 Torque settings Guide pin screw 8Nm Gas spring shoulder screw 10 Nm Sidebar screw 15Nm Mattress retainer 2 Guide pin locking Cover Mounting block 2 X ray translucent top Gas spring 2 Side arm Gas spring release handle Side arm Release head gas spring 2 Side bar 2 End cap 2 Guide pin Cross bar leg section only Fig 6 4 General arrangement of head and leg section Note Leg section illustrated P34 54 T SM47j 6 5 1 4 Gas spring release head pivot pin If the piston end of a gas spring shows sign of excess wear or play at its pivot remove the pivot pin and release head c
100. the motor terminals or lead see note below If the motor fails to run in both directions replace it as detailed in section 6 5 2 1 Note To test motors Tool No 2201 can be used this consists of an inline on off switch with leads to clip onto the battery terminals and the motor terminals or leads To reverse the motor direction reverse the battery connections 6 6 7 Break motor 6 6 7 1 Prior to changing a break motor ensure that the unit has failed and not the control circuit IMPORTANT Remove the motor from the short trunk section before continuing as detailed in section 6 5 2 3 Place 24V directly from the batteries in the table base across the suspect motor terminals or leads see note in section 6 6 6 If the motor fails to run in both directions replace it as detailed in section 6 5 2 3 6 6 8 Tilt and Trendelenburg motors 6 6 8 1 Prior to changing a tilt or Trendelenburg motor ensure that the unit has failed and not the control circuit by placing 24V directly from the batteries in the table base across the motor terminals or lead see note in section 6 6 6 If the motor fails to run in both directions replace it as detailed in section 6 4 5 6 6 9 Telescopic column assembly 6 6 9 1 Prior to changing telescopic column assembly ensure that one of the two motors within the column have failed and not the control circuit Place 24V directly from the batteries in the table base across each of the motor terminals
101. tly to expose the screws at the lower edge of the lowest telescopic section where it joins the base covers Removal of base covers ii Remove both foot pedals by releasing their retaining screws taking care not to loose the return spring spring only fitted if the pedal has an external catch iii Remove the button head screw from the end of the long base cover and the countersunk screw from both sides of the covers where they join at their lower edge iv Remove the two screws from the lower edge of each side of the lowest telescopic cover not the end face screws Note These screws differ in length and must be put back as found short 12mm to short trunk end long 15mm to long trunk end T SM47j v Raise the telescopic covers sufficiently to clear the base covers and slide the base covers away from the pedestal column taking care to release the cable connected to the infrared receiver PCA fitted below each base cover section The cable plug is released by pressing the moulded release catch vi Continue to slide the base covers away from the table until clear and place them safe until replaced 6 2 2 2 Replacing base covers Slide the base covers into a suitable position to enable the two infrared receiver leads to be reconnected to the PCA fitted to each cover section ensuring the plug snaps into place correctly Check both the receivers are working by covering each in turn and send a control command via an infr
102. to take the assembly apart and reassemble it replacing parts T SM47j as required during the procedure On the short trunk it will be necessary to remove the P clip on the break gearbox loom and the bottom cover item 3 and 11 of Fig 6 6 i Remove the R clip in the end of the push button from below the table top This will release all the push button components locking or non locking ii Slide out the push button with its return spring and for the locking push button push the plunger i e item 4 of Fig 6 5 out the back of the attachment block which Will eject the ball bearing and compression spring iii Clean or replace components as required clean out any debris from recess and reassemble without lubrication Ensure that on assembly the slot in the top of the push button blade is correctly positioned over the roll pin in the attachment block iv Reassemble the table use threadlock part number 670650 on screw threads and note any applicable torque values shown in Fig 6 5 and 6 6 replacing the P clip and the bottom cover if removed and check button function by attaching and removing a suitable table section several times 6 5 2 8 Traverse rod bearing To replace the traverse rod bearings item 3 of Fig 6 7 always replace as a set of four proceed as follows Remove the long trunk section cover as 6 5 2 6 ii Remove the short trunk bottom covers items and 11 of Fig 6 6 and release connecti
103. tor loom and microswitches The traverse motor loom and microswitches are within the crossbeam see Fig 6 7 Note that all T20 a tables have the later switch arrangement Change the traverse motor loom and microswitches as follows Place table into the Service position as detailed in section 1 9 noting safety warnings in section 4 0 and then remove the bottom crossbeam cover item 17 of Fig 6 7 ii Loosen the four set screws in the two traverse limit switch cams and slide out the traverse limit switch pins take care not to lose the springs or headed bushes noting orientation Disconnect the loom from the three actuator PCA iii Remove the M4 screws securing the two traverse limit switch brackets slide them down and away from the cross beam and release the microswitches iv Fasten the new traverse motor loom microswitches onto the traverse limit switch brackets and reassemble by reversing the above ensure the limit switch pins are fully inserted into the cams and are aligned without any torsional spring Check the microswitches change state when the traverse limit switch pins are pressed and that all pins move freely v Check the new loom has been routed correctly and connected onto the three actuator PCA Reassemble the table and carry out a full table function test 6 6 15 Connector block assemblies and looms The connector block assemblies top item 5 of Fig 6 7 and bottom item 14 of Fig 6 3 enable the tr
104. trical safety checks Note Potentiometers can be tested before replacement as detailed in the Application software manual P41 54 ESCHMANN 6 6 2 Three actuator PCA ii Remove all connections to the four actuator PCA and remove it from the column remove the four M4 screws and take care not to loose the four small spacers iii Replace the new four actuator PCA with the insulation sheet and spacers as found reconnect all the loom connections and then check Appendix 2 and proceed as detailed in the Application software manual To replace a three actuator PCA item 18 of Fig 6 7 proceed as follows Place table into the Service position as detailed in section 1 9 noting safety warnings and then remove the bottom crossbeam cover item 17 of Fig 6 7 ii Remove all connections to the three actuator PCA iv Reassemble the table and carry out a full table and remove it from within the crossbeam function test iii Replace the new three actuator PCA with the old insulation sheet reconnect all the connections and 6 6 4 Infrared receiver PCA then check Appendix 2 and proceed as detailed To replace an infrared receiver PCA proceed as follows Remove the appropriate base cover as detailed in iv Reassemble the table and carry out a full table section 6 2 2 take care of loom to ii Remove the infrared receiver PCA from inside the 6 6 3 Four actuator PCA c
105. ts that result in a lack of response to a control command 1 When the table is initially switched on is the table on LED item 23 of Fig 1 0 bright dull or off for the first few seconds If dull turn the table off wait at least 10 seconds and then turn back on If the LED is still dull or off this indicates an electronics fault see 5 2 3 If bright move to 2 below If it is flashing this also indicates an electronics fault see 5 2 3 2 Try the standby control panel any motion except Trendelenburg if this fails try the standby control panel with the backup battery switch depressed If the table works from the standby control panel this indicates a fault with the control device or its connection to the table If the table works from the standby control panel only when the backup battery switch is pressed this indicates a fault with the main batteries replace the whole Power supply unit Now try Trendelenburg from the standby control panel if this and only this motion works it indicates a problem with the main control PCA 3 If one of the motor groups only has failed then this indicates a problem with its associated PCA as follows Break and traverse Three actuator PCA Tilt Trend and Height 4 Actuator PCA This distinction may help in reducing the amount of diagnostics and cover removal T SM47j 4 Remove covers and check battery fuses see section
106. tted 1 2 3 4 5 6 7 8 9 Fig 6 2a Table base general arrangement external catch P26 54 T SM47j Note During maintenance of the front pedal or castor plate assembly it may be necessary to use shims Torque settings item 26 If pedal can be pressed past the locking M10 x 40mm screws securing point too easily then add a shim If too many shims item 1 to 2 40Nm are added the pedal may be difficult to release SS SF Castor screws 4Nm 21 Base plate Column assembly Brake pad Front wheel assembly Castor pillar Catch assembly Standby battery tray Front castor plate spacer M20 Plain washer form B Headed bush M10 nut Disc spring Rear pedal spindle assembly Castor insulation pad Rear castor plate assembly Front pedal spindle assembly Castor pillar bush Front castor plate assembly Rear pedal shaft spacer Static discharge connector Static discharge resistor assy Front pedal shaft thrust ring Castor Rear damper anchor bracket Rear pedal Isolating bush Front damper bracket Front pedal Special washer Damper Front castor plate shim Hex hd set bolt Damper clevis pin Castor plate Lifting roller assembly Pedal anchor block M10 x 50mm Screw Lifting roller spindle or use clip supplied as part of Damper 1 2 3 4 5 6 7 8 9 Fig 6 2b Table base general arrangement internal pedal catch T SM47j P27 54 Note During maintenance of the front pedal or castor pla
107. unk sections to be removed without disconnecting any looms or wiring Each part of the connector block assembly has a loom attached These items are replaced as follows i Toreplace the top connector block and loom which connects to the three actuator PCA proceed as follows a Gain access to inside the crossbeam by removing the head and leg section and then the trunk sections as detailed in section 6 2 5 for bellows replacement noting the warning at the beginning of section 6 2 5 b Remove the cross beam top cover item 10 of Fig 6 7 to gain access to the top connector block and loom Remove the ring crimp terminals of the loom where they connect to the connector block noting connection annotation R O Y B for reconnection T SM47j If replacing the loom disconnect it from the three actuator PCA and connect the new loom back as found If replacing the top connector block release the two M6 screws to remove it replace the new block and remake the ring crimp connections ii replace the lower connector block and loom which connects to the four actuator PCA proceed as follows a Remove the trunk sections from the table as detailed in section 6 2 5 for bellows replacement noting the warning at the beginning of section 6 2 5 but note that only the metal top of column covers items 12 13 and 14 of Fig 6 1 need to be removed the bellows can remain attached b Remove the top of column cover item 11 of Fig 6 1
108. urg or tilt actuator motor see section 6 6 8 for motor test details refer to Fig 6 3 and proceed as follows i Gain access to the top of the column as detailed in section 6 2 3 ii Remove the motor cable spade connectors from where they connect onto the four actuator PCA note two sizes to aid correct connection Remove the two motor fixing screws to release the motor assembly and then remove the motor mount from the motor two screws iv Apply grease part number 110477 to the worm Fasten the motor mount onto the new motor apply threadlock part number 670650 to fixing screws v Check condition of wheel whilst disassembled and change actuator assembly if required Apply grease part number 110477 to the wheel vi Replace the new motor onto the location dowels apply threadlock part number 670650 to the fixing Screws Reassemble table by reversing the above and test all table functions 6 4 6 Tilt bush To replace a tilt bush item 11a of Fig 6 3 refer to Fig 6 3 and proceed as follows i Note the warning in section 6 2 5 before continuing Remove the trunk sections and top location angles as detailed in section 6 2 5 for bellows replacement and the top of column cover item 12 of Fig 6 1 ii lt is recommended that both bushes items 11a Fig 6 3 are replaced one in the Trend frame front beam and one in the Trend frame rear beam items 2 and 3 of Fig 6 3 Remove the R clip and pin from the t

Eschman T-20 O/R Table Service Manual

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