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16
ENGLISH
There is excessive belt wear. The belt is too loose.
The belt is too tight.
The pulley is loose.
The pulley is misaligned.
Check the belt tension.
Check the belt tension.
Align the pulley/flywheel. Correct the belt tension. Torque
the set screws.
Align the pulley/flywheel.
Tank is slow to build pressure or will not
build pressure
The connections (fittings, tubing, etc.) are
loose and leaking.
The drain valve is loose or open.
The check valve is leaking.
Check all the connections with a soap and water solution
and tighten.
Tighten the drain valve.
Bring the compressor to a service center.
There is excessive moisture in the discharge
air.
There is excessive water in the air tank.
The oil blow-by has accumulated in
the pump.
It is normal for oil lube air compressor pumps to release
some oil into the tank and air lines. Air compressors will also
generate water condensation that will form in the tank and
air lines. Install water and oil filter traps when needed. The
Typical Compressed Air Distribution System section provides
a guideline. Contact or call Crafstman Customer Service for more
information.
IMPORTANT: If the tank or air lines have excessive water and/or
oil, bring the compressor to a service center.
The fuses blow or the circuit breaker trips
repeatedly.
The incorrect fuse size is being used, or
the circuit is overloading.
There are loose electri
cal connections.
There is a defective check valve or
unloader.
Verify the proper fuse size is being used.
Use time-delay fuses.
Disconnect other electrical appliances from the circuit or
operate the compressor on its own branch circuit.
Verify the wiring connection inside the pressure switch and the
terminal box area.
Bring the compressor to a service center.
Clean or replace check valve
PROBLEM CAUSE CORRECTION
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