ICU Medical LifeCare PCA, Technical & Service Manual, Page: 127 / 148

7.3 REPLACEMENT PROCEDURES
Technical Service Manual 7 - 35 LifeCare PCA
7.3.9.4
POWER SUPPLY PWA REPLACEMENT
Recommended tools for this procedure are a 3/16 inch nutdriver and a small flat blade
screwdriver.
Replacement parts for this procedure are:
PWA, Power Supply
Shield, Power Supply
Assembly, Wire, Power Supply Ground
Plate, Power Supply Ground
Screw, 4-40 x 5/16, Hex Head
Standoff, 4-40, M/F, Hex
To replace the power supply PWA, see
Figure 7-14
, and proceed as follows:
1. Disconnect the infuser from AC power.
2. Separate the front and rear enclosures as described in Section 7.2.2 .
3. Using the nutdriver, remove the 4-40 screw that secures the power supply shield,
and fold the shield away from the power supply. Ensure latest power supply shield
is assembled to standoff.
4. Using the nutdriver, remove the M/F standoff. Ensure set screw is assembled to
standoff.
5. Disconnect the rear enclosure harness assembly from the power supply PWA.
6. Using the nutdriver and/or screwdriver, remove the three 4-40 screws and remove
the power supply from the rear enclosure.
7. Remove and inspect the power supply shield, and replace, if required. Ensure power
supply ground plate and power supply ground wire are installed.
8. Install the replacement power supply PWA and power supply shield in the exact
reverse order of removal.
Note: Verify all connectors are fully seated before the front and rear enclosures
are closed and fastened.
9. Connect the infuser to AC power.
To verify successful replacement of the power supply PWA, perform the PVT in Section 5.6 .
7.3.9.5
PAWL/RATCHET ASSEMBLY REPLACEMENT
The recommended tool for this procedure is a 1/4 inch nutdriver.
Replacement parts for this procedure are:
Assembly, Pawl/Ratchet
Screw, 8-32 x 3/8, Hex Head
To replace the pawl/ratchet assembly, see Figure 7-14 , and proceed as follows:
1. Disconnect the infuser from AC power.
2. Separate the front and rear enclosures as described in
Section 7.2.2
.