Table 3-4. Air Compressor Troubleshooting
TEST OR INSPECTION
AIR COMPRESSOR MOTOR FAILS TO START, OR STOPS AT IMPROPER TIME.
Check for defective wiring or connections.
Check wiring and connections and correct.
Check for current overload which opens circuit breaker.
Locate and correct cause of overload.
Check for defective motor.
If motor is defective, replace.
Check drive belt, which may be too tight.
Loosen motor mounting bolts, position motor proper
distance from compressor.
MOTOR RUNS BUT FAILS TO DRIVE COMPRESSOR.
Check for broken drive belt.
Check for loose drive belt.
Loosen motor mounting bolts, position motor
in proper position.
If motor or compressor pulley is loose on shaft, tighten