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Page Title:
COMPRESSOR |
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 TM 5-4120-341-13
3. INSUFFICIENT COOLING
step 1.
Inspect sight glass for proper amount of refrigerant.
Add refrigerant as required (para. 5-8).
Step 2.
Remove restriction or replace dehydrator (para. 5-13).
step 3.
Check for air in refrigerant system.
Purge refrigerant system (para. 5-8).
Step 4.
Inspect expansion valve for proper operation and damage.
Replace defective expansion valve (para. 515).
4. LOW SUCTION PRESSURE
step 1.
Inspect expansion valve for proper operation.
Replace defective expansion valve (para. 5-15).
step 2.
Check to see if dehydrator is clogged or defective.
Remove restriction or replaced dehydrator (para. 5-13).
5. LOW SUCTION AND DISCHARGE PRESSURE
step 1.
Inspect sight glass for proper amount of refrigerant.
Add refrigerant as required (para. 5-8).
Step 2.
Inspect refrigerant piping for leaks.
Repair leaks or replace piping (para. 5-10).
step 3.
Inspect expansion valve for proper operation and damage.
Replace defective expansion valve (para 5-15).
5-3
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