TM9-4120-400-14
Table 5-1.
TROUBLESHOOTING - continued
MALFUNCTION
TEST OR INSPECTION
C O R R E C T I V E ACTION
3. INSUFFICIENT COOLING. - continued
Step 7. Check quench valve for proper operation. (See para 5-23.)
Replace if defective.
REFRIGERANT SYSTEM CONTINUOUSLY LOSING REFRIGERANT
Step 1. Check refrigerant tubing and components for leaks using a leak detector. (See para 5-14.)
Repair or replace as required.
Replace if defective.
UNIT OPERATES CONTINUOUSLY ON COOLING CYCLE.
Replace if defective.
REFRIGERANT IS CONTAMINATED.
Sight glass appears yellow instead of green after compressor has run for at least one hour.
AIR CONDITIONER NOISY DURING OPERATION.
Replace if defective.
Replace if defective.
Step 3. Check compressor for internal noise and loose mounting. (See para 5-35.)
a. Repair loose mounting.
5-5