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TROUBLESHOOTING GUIDE (Continued)
PROBLEM CAUSE CORRECTION
Air leak from safety valve. Possible defect in safety valve. Operate safety valve manually by pulling on ring. It valve
still leaks, it should be replaced.
Remove and clean, or replace.
Decrease amount of air usage.
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.
Motor overload protection switch has
tripped.
Tank pressure exceeds pressure switch
"cut-in" pressure.
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.
Wrong gauge wire or length of extension
cord.
Check valve stuck open.
Loose electrical connections.
Possible defective capacitor.
Paint spray on internal motor parts.
Possible defective motor.
Fuse blown, circuit breaker tripped.
Pressure release valve on pressure switch
has not unloaded head pressure.
Dirty or damaged regulator internal
parts.
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 Troubleshoot-
ing Guide.)
Let motor cool off and overload switch will automatically
reset.
Motor will start automatically when tank pressure drops
below "cut-in" pressure of pressure switch.
Check for proper gauge wire and cord length.
Remove and clean, or replace.
Check wiring connection inside pressure switch and
terminal box area.
Return to Sears Service Center for inspection or replace-
ment, if necessary.
Have checked at Sears Service Center. Do not operate the
compressor in the paint spray area. See flammable vapor
warning.
Have checked at a local Sears Service Center.
1. Check fuse box for blown fuse and replace, if
necessary. Reset circuit breaker. Do not use a fuse
or circuit breaker with higher rating than that speci-
fied 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 electrical appliances from cir-
cuit or operate the compressor in its own branch
circuit.
Bleed the line by pushing the lever on the pressure switch
to the "ofF' position; if the valve does not open, replace
it.
Clean or replace regulator, or internal parts.
13
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