Craftsman 919.727121 Owner's Manual page 13

TROUBLESHOOTING GUIDE (Continued)
PROBLEM
Air leak from safety valve.
Knocking Noise
Compressor is not supplying
enough air to operate
accessories.
Motor will not run.
Regulator knob continuous air
leak. Regulator will not shut off
at air outlet.
CAUSE
Possible defect in safety valve.
Defective check valve.
Prolonged excessive use of air.
Compressor is not large enough for
air requirement.
Restricted air intake filter.
Hole in hose.
Check valve restricted.
Air leaks.
Fuse blown, circuit breaker tripped.
Extension cord is wrong length or
gauge.
Loose electrical connections.
Faulty motor.
Dirty or damaged regulator internal
parts.
13 — ENG
CORRECTION
Operate safety valve manually by pulling on ring. If
valve still leaks, it should be replaced.
Have checked at local Sears Service Center.
Decrease amount of air usage.
Check the accessory air requirement. If it is higher
than the SCFM or pressure supplied by your air
compressor, you need a larger compressor.
Clean or replace air intake filter. Do not operate the
air compressor in the paint spray area.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings. (See Air Leaks Section of Trouble-
shooting Guide.)
Check fuse box for blown fuse and replace as neces-
sary. 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 be using a Quick
Acting fuse.
Check for low voltage problem.
Check for the extension cord.
Disconnect the other electrical appliances from cir-
cuit or operate the compressor on its own branch
circuit.
Check the extension cord.
Check wiring connection inside terminal box.
Have checked at local Sears Service Center.
Clean or replace regulator, or internal parts.
D20414 Rev. 0 2/15/00