6. Separate the front and back pump housing. Place the back pump housing down on the work surface.
C
CA
AU
UT
TIIO
ON
N -- Always use a grounded static strap to prevent static coming into contact with the PCB assembly.
7. Unplug all cables from the PCB assembly.
N
No
otte
e -- Pay attention to the cable connection locations for reinstallation.
8. Using a #2 Phillips screwdriver, remove the two screws that secure the support bracket holding the PCB assembly and
the screen to the front pump housing. Save the screws and support bracket.
9. Using a #2 Phillips screwdriver, remove and save the three screws that secure the board to the screen.
10. Grasp each of the air hoses individually and pull out from the mattress hose connector to detach each hose from the
connector.
N
No
otte
e -- Pay attention to the air hose connection locations for reinstallation.
11. Grasp each of the pressure transducer hoses individually and pull out from the mattress hose connector to detach each
hose from the connector.
N
No
otte
e -- Pay attention to the pressure transducer hose connection locations for reinstallation.
12. Using a stubby #2 Phillips screwdriver, remove the four screws that secure the LED board assembly to the front pump
housing assembly. Save the screws.
13. Remove the PCB assembly.
14. Remove and discard the front pump housing.
15. Reverse the steps to reinstall (
Pump housing assembly 2874-007-017
16. Run and pass the diagnostic test.
17. Verify proper operation before you return the product to service.
P
Po
ow
we
err ssu
up
pp
pllyy rre
ep
plla
acce
em
me
en
ntt
T
To
oo
ollss rre
eq
qu
uiirre
ed
d::
•
T20 Torx driver
•
#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. Unplug the power input cable and the power output cable from the power supply.
9. Using one hand to hold the fish paper and a #2 Phillips screwdriver, remove the four Phillips screws and washers that
secure the power supply to the main frame. Save the screws, washers, and fish paper.
10. Remove and discard the power supply.
11. Reverse the steps to reinstall (
Power supply assembly 2874-007-024
12. Run and pass the diagnostic test.
13. Verify proper operation before you return the product to service.
EN
12
2874-009-002 Rev A.1
