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TM 5-4120-377-14
Table 4-2. TROUBLESHOOTING (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. COMPRESSOR STARTS NORMALLY, BUT COMPRESSOR CIRCUIT BREAKER SOON TRIPS.
Step 7. Check to be sure fabric cover is rolled up.
Roll up and secure fabric cover.
Step 2. Check to be sure there is no restriction to air flow through condenser section.
Clean all obstructions from condenser inlet, outlet, and condenser coil.
Step 3. Check to be sure that condenser fan is operating. (Air being discharged from condenser air
outlet.)
NOTE
Condenser fan and conditioned air (evaporator) fan are both driven by the same
motor. If one fan is operating and the other is not, check for loose fan on motor
shaft. If both fans are not operating, check for loose electrical connections,
defective motor relay (K4), or defective motor (B2).
Step 4. Check circuit breaker (CB1).
Test circuit breaker. (See para 4-51.) Replace circuit breaker if defective. Reset compressor
circuit breaker and restart in COOL mode.
If circut breaker trips again soon after restart in COOL mode, do not attempt
another restart, and contact direct support maintenance for refrigeration system
troubleshooting.
4-42
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