Stryker IsoTour, Maintenance Manual

Page: 19 / 44

6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. On the solenoid/valve that needs to be replaced, make note of the hose locations first, then unplug each hose from the
valve.
N No otte e -- Pay attention to the hose locations for reinstallation.
8. Unplug the solenoid cable from the PCB.
9. Using a #2 Phillips screwdriver, remove and save the two screws that secure the valve to the valve bracket.
10. Remove and discard the solenoid/valve.
11. Reverse the steps to reinstall ( 3 way digital valve assembly 2874-007-028 (page 30) or 5 way digital valve assembly
2874-007-029 (page 31)).
12. Run and pass the diagnostic test.
13. Verify proper operation before you return the product to service.
P Pu um mp p rre ep plla acce em me en ntt
T To oo ollss rre eq qu uiirre ed d::
• T20 Torx driver
• Wire cutters
• #2 Phillips screwdriver
P Prro occe ed du urre e::
1. Unplug the pump from AC power.
2. Unplug the mattress tubing from the pump.
3. Place the pump front down on a work surface.
4. Using a T20 Torx driver, remove and save the six screws that secure the back pump housing to the front pump housing.
5. Using two hands, rotate the pump assembly to the right so the front is to your left.
6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
7. Grasp the hose at the manifold coming from the pump and pull to remove the hose from the manifold.
8. Using wire cutters, cut the four zip ties that secure the pump power cable to the rest of the cables.
C CA AU UT TIIO ON N -- Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
N No otte e
• Use care when you cut the zip ties that you do not cut or damage the cables.
• Replace the zip ties when you reinstall.
9. Unplug the pump power cable from the PCB assembly.
10. Using a #2 Phillips screwdriver, remove and save the screw that secures the pump cable p-clamp to the main frame.
Remove and save the p-clamp.
11. Using a T20 Torx driver, remove and save the four screws that secure the pump frame to the main frame.
12. Remove the spring from the hose and insert into the new pump assembly hose.
13. Remove and discard the pump assembly.
14. Reverse the steps to reinstall (
Compressor assembly 2874-007-023
(page 25)).
15. Run and pass the diagnostic test.
16. Verify proper operation before you return the product to service.
2874-009-002 Rev A.1 15 EN