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Section II. ORGANIZATIONAL TROUBLESHOOTING
KNOCKING OR RATTLE DEVELOPS IN COMPRESSOR PUMP - TM-5-4310-370-140033

TM-5-4310-370-14 Compressor Unit Reciprocating Electric 5 CFM 175 PSI (4310-01-089-4330) Manual
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TM 5-4310-370-14
TABLE 4-1. ORGANIZATIONAL TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. MOTOR INOPERATIVE
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Step 1.
Check to see if motor is hot to the hand.
If motor is hot to the hand, it has over-heated. Allow
motor to cool.
Step 2.
If motor has cooled and will not start check motor wiring
connections.
Tighten motor wiring connections.
Step 3.
Make sure that motor shaft is still capable of turning.
If motor shaft is frozen, replace mot or as described in
paragraph 4-7.
3. COMPRESSOR UNIT RUNS ABOVE SHUT-OFF PRESSURE (195 PSI 1350 KPa)
WARNING
Release pressure from air receiver and compressor pump before inspection,
performing procedures or disassembly of equipment to avoid personal injury.
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Step 1.
Remove pressure switch cover and check for loose wire
connections.
Tighten any loose wire connections.
Step 2.
Check setting of pressure switch.
Adjust pressure switch settings as described in paragraph 4-8.
4-4






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