TM 5-4310-371-14
TABLE 3-1. OPERATOR/CREW TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. COMPRESSOR UNIT WILL NOT START
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
Step 1.
Check pressure gage for amount of pressure in air receiver as
compressor unit will not come on until pressure is below 175 PSI
(1210 KPa).
Tighten all electrical connections.
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Step 2.
If pressure is below 175 PSI (1210 KPa), check to make sure all
wiring connections are tight.
Tighten pressure switch, located next to motor.
Step 3.
Check to see that pressure switch is tight to air receiver.
If unit does not start, refer further service to higher
level of maintenance. (See Appendix B)
5. MOTOR IS RUNNING, BUT COMPRESSOR PUMP IS NOT
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Step 1.
Check V Belts for slippage or looseness.
Tighten belts as described in Chapter 3, Section III,
6. MOTOR OVERHEATS
Step 1.
If compressor unit shuts down and motor is very hot to the
touch of the hand.
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