SERVICE MANUAL - Charles L. Crain

1 model 2700110--015--018 Rev. ADate Effective:November, 2002 SERVICE MANUALWhen contacting Global Surgical Corporation for either Customer SERVICE or TechnicalService, it will be helpful if you have yourCustomer Identification Numberand yourCustomer Order Numberavailable. Please take a moment to record these numbers,which are printed on your invoice, on the spaces below:Customer Identification Number:_____Customer Order Number:_____3610 Tree Court Industrial Louis, MO 631221--800--861--3585 COPYRIGHT NOTICE Copyright 2001, Global SurgicaltCorporation. No part of this publication maybe copied, photocopied, reproduced. translated, or reduced to any electronicmedium or machine--readable form, in whole or in part, without the prior writtenconsent of Global SurgicaltCorporation, 3610 Tree Court Industrial Blvd., , MO of ContentsiSMR 2700 MAXICHAIRS ection 1: General SERVICE chair Optional 2: SERVICE and Warranty Warranty Technical services Internet SERVICE User 3: Component Removal and Manifold Fuse Fuse Replacement (for Chairs with s/n 1001 thru 1547) Fuse Replacement (for Chairs with s/n 1548 and above) Maxi select Controller Status LED Maxi select Controller Features and Maxi select Controller Set--up Headrest Friction Headrest Removal and Installation of Lubrication of Back Up/Down Slide 4.

2 Component Removal and Maxi select Controller PC Board Armrest Shaft Early Production Current Production Membrane Switch Replacing the Membrane Switch Ribbon Lower Cylinder Upper Cylinder Hydraulic Power Pack Unit Assembly Stop Caliper Brake Removal/Replacement of Power Cord Installing the Maxi select Controller Cable Calfrest 5: Exploded Parts Lower Skeleton Exploded of ContentsiiSMR 2700 MAXICHAIRList of Tables1--1. chair Maxi select Controller of IllustrationsFigure 1--1. Overall 2--1. Removing the Rear chair 2--2. Manifold Adjustment Screw 2--3. Replacing Fuses (Chairs with S/N 1001 thru 1547) 2--4. Replacing Fuses (Chairs with S/N 1548 and above) 2--5. MaxiSelect Controller 2--6. MaxiSelect Controller 2--7. MANUAL Headrest Friction 2--8. Removing the Rear chair 2--9. Lubricating the Back Up/down Slide Shaft Assembl; 3--1.

3 Removing the Rear chair 3--2. Replacing the PC 3--3. Replacement of the Armrest Shaft and Pivot 3--4. Replacing Membrane 3--5. Replacing the Ribbon 3--6. Replacing Lower Hydraulic 3--7. Replacing Plastic 3--8. Removing Rear Hydraulic Line on the Upper Hydraulic 3--9. Removing Front Hydraulic Line on the Upper Hydraulic 3--10. Removing Socket Head Cap Screw from Cylinder 3--11. Removing the Upper Hydraulic 3--12. Replacing the Hydraulic Power Pack Unit 3--13. Replacing the Emergency Stop Caliper 3--14. Removing the Power Cord Plug from the Power 3--15. Power Cord Plug 3--16. Rewiring Power Cable 3--17. Installing Protective Cover on Maxi select 3--18. Removal and Installation of 3--19. Securing chair Side 4--1. Lower Skeleton 4--3. Lower Skeleton Exploded 4--4. Lower Skeleton Exploded Parts (continued) and WarningsiiiSMR 2700 MAXICHAIRThis symbol on the product is an attention symbol, alerting the user to toread the Owner s MANUAL for important installation or operating instructions,or important safety information, which should be read symbol on the product indicates a potential electrical shock hazard, andalerts the user to read the Owner s MANUAL for important safety informationon how to avoid the symbol appearing in theillustrations corresponds to the numberedstep in the :Disconnect all electrical power from the chair before attempting to servicethe internal components of the chair .

4 There is a risk of electrical shockresulting in injury or death if the power is not :Never adjust the Pressure Relief Value to the fully seated clockwiseposition. SEVERE DAMAGE to the hydraulic pump can result. Themaximum adjustment is 3/4 turn from the fully seated clockwise :Failure to make sure Fuseholder is properly snapped back into the secureposition can result in intermittent function of the :Upon exiting the chair , if the occupant places his or her weight on ends ofboth of the Armrests at the same time and presses downward to raisethemselves up, the Pivot Bracket attachment screw may :The only time a jumper should be placed in JUMPER, CYCLE ENABLE position iswhen the limit switch flags are being adjusted or when the chair is being placedinto cycle :Do not overtighten the adjustment screw. Overtightening adjustment screw maycause pin in headrest assembly to break, removing all :Slight adjustments to the manifold can translate to major changes in theperformance of the hydraulic system.

5 Make small adjustments, check theperformance, and make further adjustments as :There have been cases where the 1/4 pin has also broken from the weight beingapplied to the front of both Armrests. These cases are rare but have prompted adesign change to eliminate this :In the event that there is a burr on the Armrest Shaft or if the 5/16 pin is brokeninside the Pivot Arm Bracket the shaft may not slide through the bracket and mayhave to be cut in order to remove it. Should this happen, use a hacksaw and cutthrough the shaft on both sides of the Pivot Arm Bracket and pull out from :When installing a new Ribbon Cable Assembly, be sure not to allow the cable tobecome kinked or pinched by any of the cable :Tap Lubricant (3-in-1 Oil or equivalent) is absolutely necessary in this proce-dure to prevent the tap from breaking off in the :There are two fuses located in each fuse holder. The fuse in the front or closest to thecover, is a spare fuse.

6 The fuse that will need replacing is in the back of the and WarningsivSMR 2700 MAXICHAIRNOTE:The Rectangular Fuse Holders were replaced by Round Fuse Holders on chairs withserial numbers 1548 and above. The Round Fuse Holders require a flat blade screw-driver to :The are two 2--amp fuses and two 10--amp fuses located in a plastic bag taped to theoutside of the Control Box. When one these fuses is used, it should be replaced withanother and the bag re--taped to the outside of the Control :On some chairs, if the Pressure Relief Valve was adjusted too far clockwise, excessivepressure could be created exceeding the pump rating. This could result in hesitation orchatter in chair :The Hydraulic Pump does not activate during SEAT DOWN :If chatter is present in BackUp or Back Down movement, it may be related to the inputvalves being adjusted all the way flush. During all repair or adjustments to the chair withthe back cover off, tthese valaves should be adjusted to :The maxichair select Controller is Multitasking, which means a Seat Functioncan take place at the same time as a Back Function.

7 If more than one functionis being performed at a time, combine the conditions from the above chart to getthe proper Status LED : chair will start to :It is a good idea to mark the cables using a small piece of masking or other tape toensure they get reconnected to the proper places on the new PC :Do not completely remove the left side Ribbon Cable at this :The Pivot Bracket on current production models has been made thicker and a5/16 pin secured by a E clip on both ends has been installed. These newerPivot Brackets and Pins are also available for replacement :Worn or cracked Mounting Clevis components could produce vibrations or even causethe chair to jerk unexpectedly during the operation of the hydraulic :Use care when installing the single screw on the front of the Manifold Assembly. There isa washer (Retaining Flange 107--037--223) included with the screw which is usedbecause of the slotted hole on the front :In order to remove the Emergency Stop Caliper Brake Assembly both the Ribbon WireConnector and the Power Cord must be pressed through the Cord Grommet in the BrakeDisk.

8 The Ribbon Wire Connector can be manipulated by turning the connector alongside of the ribbon cable and pressed downward through the grommet. The Power CordPlug, however, will not fit through the grommet and must be removed from the PowerCord in order to complete this procedure. A Pin Extractor will be required to remove thePower Cord Plug from the the power Manual1 SMR maxichair model 2700 Section 1. General SERVICE chair SpecificationsThe SMR Maxi chair select 2700 Examination chair is designed to provide a comfortable, adjust--able platform for conducting routine examinations. The chair is adjustable from an upright position,90 above horizontal, to a slight decline (Trendelenberg position) of 10 below horizontal. The armsare fully articulated to move with the chair position. The MANUAL headrest may be raised or loweredand moved forward or backward as well as locked into the position set. The arms swing up and out ofthe way and the footrest folds up for easy patient entry and exit from the chair .

9 The chair is equippedwith illuminated solid state controls located on both sides of the chair back for easy access. A ChildSafety Disable Feature, disables the solid state controls when the chair is left unattended. The chairmay be rotated manually and locked into position using an hydraulically actuated rotational lock. Thecontrol for the rotational lock is located on each of the control panels on both sides of the chair chair is powered by a smooth, quiet, hydraulic motor driven by a microprocessor control 1--1, below, lists the chair specifications and Figure 1--1 on the following page, shows theclearance requirements and maximum angles possible for the 1-1. chair SpecificationsITEMSPECIFICATIONSE lectrical Requirements:Input:Fuse:* w/optional Solarlitet--**w/o optional Solarlitet115 VAC +/--10%, 60 Hz, Amps *115 VAC+/--10%,60Hz, **(2 ea.) 5 x 20 MM, 250V, 10 Amp, Time Delay(2 ea.) 5 x 20 MM, 250V, 2 Amp, Time DelayShipping WeightApproximately: 400 lbs.

10 (182 KG)Base x 26 ( x cm)Overall ( cm)Maximum Lift Capacity400 + lbs. (182 + KG)Range of chair Back Angle AdjustmentMaximum Upright PositionMaximum Reclined Position/Trendelenberg Position90 Above Horizontal10 Below HorizontalChair Seat Angle (Fixed)3 Tilted BackRange of Seat ElevationMinimum ElevationMaximum Elevation17 ( cm)19 ( cm)LX 21 ( cm)36 ( cm)38 ( cm)Required Working Space for ChairUpright PositionReclined X ( cm X cm.)75 X ( cm X cm.)Environmental Factors: Storage, Transport andOperationOperating TemperaturesStorage TemperaturesNon--condensing Relative HumidityOperatingStorage+50 F(10 C) to 90 F(32 C)-- 2 0 F(--28 C) to +150 F(65 C)20% to 85%20% to 85% SERVICE Manual2 SMR maxichair model 270036 ( )75 ( cm.) ( cm.)13 ( cm.) ( cm.)13 ( cm.) ( cm.)20 ( )26 ( )19 ( )Figure 1-1. Overall Optional EquipmentOptional accessories for the SMR maxichair select S2700 Examination chair include a footswitch tosupplement the controls on the sides of the chair back.