Sears Craftsman 919.154320 - Manual (Page 11)

TROUBLESHOOTING GUIDE (Continued)
PROBLEM CAUSE CORRECTION
Air leak from Safety Valve Possible defect in Safety Valve. Operate safety valve manually by pulling on ring. If
valve still leaks, it should be replaced.
Knocking Noise Defective Check Valve. Remove and clean or replace.
Compressor is not supply­
ing enough air to operate
accessories. Prolonged excessive use of air. Decrease amount of air usage.
Compressor is not large enough
for air requirement.
Check the accessory air requirement. If it is higher
than the SCFM or pressure supplied by your air
compressor, you need a larger compressor.
Restricted air intake filter. Clean or replace air intake filter. Do not operate the
air compressor in the paint spray area.
Hole in hose. Check and replace if required.
Check Valve restricted. Remove and clean or replace.
Air leaks. Tighten fittings. (See Air Leaks Section of
Troubleshooting Guide.)
Motor Will Not Run Motor overload protection switch
has tripped. Let motor cool off and overload switch will auto­
matically reset.
Tank pressure exceeds pressure
switch “cut-in” pressure. Motor will start automatically when tank pressure
drops below “cut-in” pressure of pressure switch.
Wrong gauge wire or length of
extension cord. Check for proper gauge wire and cord length.
Check Valve stuck open. Remove and clean or replace.
Loose electrical connections. Check wiring connection inside pressure switch
and terminal box area.
Possible defective capacitor. Return to Sears Service Center for inspection or
replacement if necessary.
Paint spray on internal motor
parts. Have checked at Sears Service Center. Do not
operate the compressor in the paint spray area.
See flammable vapor warning on page 3.
Possible defective motor. Have checked at a local Sears Service Center.
Fuse blown, circuit breaker
tripped.
1. Check fuse box for blown fuse and replace if
necessary. Re-set circuit breaker. Do not use a
fuse or circuit breaker with higher rating than that
specified for your particular branch circuit.
2. Check for proper fuse; only “Fusetron” type T
fuses are acceptable.
3. Check for low voltage conditions and/or proper
extension cord.
4. Disconnect the other electical appliances from
circuit or operate the compessor on its own branch
circuit.
Pressure release valve on pres­
sure switch has not unloaded
head pressure.
Bleed the line by pushing the lever on the pressure
switch to the “Off” position; if the valve does not
open, replace it.
Regulator knob - continu­
ous air leak. Regulator will
not shut-off at air outlet.
Dirty or damaged regulator inter­
nal parts. Clean or replace regulator, or internal parts.
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