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F-88
TROUBLESHOOTING AND REPAIR
F-88
POWER WAVE 455/POWER FEED 10
7. Carefully remove the module.
REPLACEMENT PROCEDURE
1. Clean heatsink surfaces.
2. Apply an even coating of joint com-
pound (Penetrox A-13) to both the
heatsink and module mounting sur-
faces. The joint compound should be
0.002 in/0.005 in. thick per surface.
3. Mount the module to the heat sink and
evenly torque the mounting screws
(with washers) to 44 in/lbs.
4. Assembly the leads to the correct mod-
ule terminals and torque to 26 in/lbs.
5. Apply RTV sealant to the rectifier con-
nection terminals.
6. Install the case top, sides, and input
access panel using the 3/8 in. nutdriver.
REMOVAL PROCEDURE
1. Remove input power to the Power
Wave 455.
2. Using the 3/8 in. nutdriver, remove the
case top, sides, and input access
panel.
3. Perform the
Capacitor Discharge
Procedure.
4. Locate and remove the RTV sealant
from the input rectifier connection termi-
nals. Refer to Figure F.25.
5. Label leads and using the Phillips head
screwdriver carefully remove the five
leads from the input rectifier terminals.
Note placement for reassembly.
6. Using the 3/16 in. Allen wrench,
remove the two mounting screws and
washers from the rectifier module.
FIGURE F.25 — INPUT RECTIFIER REMOVAL AND REPLACEMENT.
A
B
C
POS (+)
NEG (-)
INPUT
RECTIFIER
INPUT RECTIFIER REMOVAL AND REPLACEMENT
(continued)
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