TM 9-4120-402-14
14-40. COMPRESSOR START RELAY (K2), DIODE (CR3), AND SURGE ARRESTOR (SA1).
This task covers:
a. Remove
b. Inspect
c. Test
d. Install
INITIAL SETUP
Tools
Equipment Conditions:
Refrigeration Unit Service Tool Kit
Appendix B, item 1
CAUTION
Power Supply
Use disconnect switch (NOT POWER
Appendix B, item 6
CABLE) to disconnect power to unit.
Damage to cable connector pins will
Heat Gun
result if cable is used.
Appendix B, item 4
Disconnect power at power source.
Crimping Tool Kit
Appendix B, item 2
Remove control assembly (para 4-34).
Materials/Parts
Remove logic box assembly (para 4-36).
Compressor Start Relay
Remove motor controller assembly (para 4-37).
Surge Arrestor
Lock Washers (7)
Lug Terminals (4)
Insulation Sleeving
(Heat-Shrink Tubing)
Insulation Tubing
a. Remove.
(1) Tag and disconnect wire leads from ground E3.
(2) Remove three sets of screws (1), lock washers (2), and flat washers (3). Carefully pull relay bracket
(4) and relays from control assembly as far as wire leads will allow.
NOTE
Terminal protective cover must be removed to access wire terminals.
(3) Tag and disconnect wire leads, diode assembly, and surge arrestor assembly from relay (5).
(4) Remove four sets of screws (6), lock washers (7), flat washers (8), and relay (5).
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