Craftsman 919.152120 Operator's Manual page 15

PROBLEM
Knocking Noise.
Compressor is not supplying
enough air to operate accessories.
CAUSE
Defective check valve.
Prolonged excessive use of air.
Compressor is not large enough
for air requirement.
Motor will not run.
Hole in hose.
Check valve restricted.
Air leaks.
Fuse blown, circuit breaker
tripped.
Extension cord is wrong length or
gauge.
Loose electrical connections.
CORRECTION
Remove and clean, or replace.
Decrease amount of air usage.
Check the accessory air require-
ment. If it is higher than the
SCFM or pressure supplied by
your air compressor, you need a
larger compressor.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings.
Check fuse box for blown fuse
and replace as necessary.
Reset circuit breaker. Do not use a
fuse or circuit breaker with higher
rating than that specified for your
particular branch circuit.
Check for proper fuse. You should
use a time delay fuse.
Check for low voltage problem.
Check the extension cord.
Disconnect the other electrical
appliances from circuit or
operate the compressor on its
own branch circuit.
Check the extension cord.
Check wiring connection inside
terminal box.
Faulty motor. Have checked by a Trained
Service Technician.
Regulator knob has continuous air Damaged regulator Replace
leak.
Regulator will not shut off air out- Damaged regulator Replace
let.
15-ENG D21850