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9 - ENG200-2929
Note:Troubleshootingproblemsmayhavesimilarcausesandsolutions.
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Low pressure or not
enough air
or
Compressor does not
stop
Tank petcock is open Close petcock.
Fittings Leak
Check fittings with soapy water. Tighten or reseal leaking fittings. DO
NOT OVERTIGHTEN.
Restricted air intake Clean or replace intake filter element.
Prolonged excessive use of air Decrease amount of air used.
Compressor not large enough
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor. Most
accessories are rated at a 25% duty cycle.
Hole in air hose Check and replace if necessary.
Tank leaks
WARNING:
Immediately replace tank. DO NOT attempt to repair.
Blown seals Contact a qualified service center.
Valve leaks Contact a qualified service center.
Leaking or worn piston Contact a qualified service center.
Air leaks from regulator,
or regulator does not
regulate pressure
Dirty or damaged regulator
internal parts.
Contact a qualified service center.
Regulated pressure
gauge reading drops
when air accessory is
being used
This is normal If pressure drops too low, adjust regulator while accessory is used.
Compressor not large enough
Check air requirement of accessory. If it is higher than CFM and
pressure supplied by compressor, you need a larger compressor. Most
accessories are rated at a 25% duty cycle.
Pressure relief valve
opens
Tank pressure exceeded normal
operating pressure
Contact a qualified service center.
Pressure switch stuck Contact a qualified service center.
Motor will not run
Tank pressure exceeds preset
pressure switch limit
Motor will start automatically when tank pressure drops below kick-in
pressure of pressure tank.
Motor overload protection has
tripped
Let motor cool off and overload switch will automatically reset. This
may take several minutes.
Fuse blown or circuit breaker
tripped
•Replaceblownfuseorresetcircuitbreaker.Donotusefuseorcircuit
breaker with higher rating than specified for your branch circuit.
•Checkforproperfuse;“Fusetron”typeTisacceptable.
•Checkforlowvoltageandproperextensioncordsize.
•Disconnectotherapplicationsfromcircuit.Operatecompressorona
dedicated circuit.
Dirty or defective check valve.
Replace or clean the check valve (see “To replace or clean check
valve” in the maintenance section).
Wrong wire gauge in cord or
excessive extension cord length
Check for proper gauge and extension cord length.
Loose electrical connections Contact a qualified service center.
Paint spray on internal motor
parts
Contact a qualified service center. Do not operate compressor in the
paint spray area
Possible defective motor Contact a qualified service center.
Air leaking through
bleeder valve after
compressor shuts off
Dirty or defective check valve. Replace or clean the check valve (see “To replace or clean check
valve” in the maintenance section).
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