TM9-4120-401-14
COMPRESSOR START RELAY (K2), DIODE (CR3), AND SURGE ARRESTOR (SA1).
c. Replace
b. Test
This task covers:
a. Inspect
INITIAL SETUP
Tools
Equipment Conditions:.
Refrigeration Unit Service Tool Kit
Appendix B, item 1
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
Appendix B, item 2
Remove top panel (para 4-11).
Compressor Start Relay
Surge Arrestor
Insulation Sleeving
(Heat-Shrink Tubing)
Insulation Tubing
Lug Terminals (4)
Lock Washers (4)
a. Inspect.
Check general condition of compressor start relay (1), diode (2), and surge arrestor (3) and that terminals
are not broken or missing. Replace if damaged.
b. Test.
NOTE
Terminal protective cover must be removed to access wire terminals.
(1) Tag and disconnect wire leads, diode assembly, and surge arrestor assembly from relay (1).
(2) Remove four sets of screws (4), bck washers (5), flat washers (6), and relay (1).
4-97
