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TM5-4120-375-14
Table 5-1.
DIRECT SUPPORT MAINTENANCE TROUBLESHOOTING (cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
COMPRESSOR FAILS TO START.
Step 1.
Check pressure reset button
Test pressure switch
paragraphs 5-19 thru
on pressure switch.
in accordance with
5-24.
Step 2.
Disconnect plug, from compressor receptacle.
Using
an ohmmeter or continuity tester, test compressor
receptacle pins A-B, A-C, B-C, and D-E.
Continuity
should be indicated. Test points A,B, C to
compressor casing or common ground.
No continuity
should be indicated.
Replace compressor that does not meet
continuity requirements in accordance with
paragraph 5-35.
.
COMPRESSOR STARTS BUT STOPS AT ONCE
Step 1.
Check sight glass for bubbles.
If bubbles exist leak check system in
accordance with paragraph 5-16.
Step 2.
Loosen eight turnlock fasteners securing maintenance
panel to left side panel.
Remove maintenance panel.
Connect pressure gauges to suction and
discharge service valves. Check system
pressures in accordance with Table 5-2.
5-4
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