Campbell Hausfeld Portable Air Compressor Operating Instructions Manual page 9

Troubleshooting Chart
Symptom
Reset mechanism cuts
out repeatedly or fuses
blow repeatedly
Tank does not hold
pressure when
compressors off and the
shut off valve is closed
Pressure switch
continuously blows air
out the unloader valve
Pressure switch does
not release air when
the unit shuts off
Excessive vibration
(Continued)
Possible Cause(s)
1. Too many devices on same circuit
2. Incorrect fuse size or circuit breaker
3. Malfunctioning check valve
4. Pressure switch set too high
5. Loose wiring
6. Malfunctioning motor
1. Worn check valve
2. Check all connections and fittings
for leaks
3. Check tank for cracks or pin holes
Malfunctioning check valve
Malfunctioning unloader valve on
pressure switch
1. Loose fasteners
2. Belt needs replaced
3. Belt alignment
Corrective Action
1. Limit the circuit to the use of only the air compressor.
2. Be sure that fuses or circuit breakers are rated properly.
3. Replace check valve.
Do not disassemble check
valve with air pressure in tank
4. Adjust or replace.
5. Check all electrical connections.
6. Replace motor.
1. Replace check valve.
Do not disassemble check
valve with air pressure in tank
2. Tighten.
3. Replace tank. Never repair a damaged tank.
Replace the check valve if the unloader valve bleeds off constantly.
Do not disassemble check
valve with air pressure in tank
Replace the pressure switch if it does not release the pressure for a
short period of time when the unit shuts off.
Do not disassemble check
valve with air pressure in tank
1. Tighten.
2. Replace with correct size.
3. Align flywhell and pulley.
9
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