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TROUBLESHOOTING GUIDE (continued)
PROBLEM CAUSE
Excessive belt wear Loose belt.
CORRECTION
Adjust tension. See Belt Replacement, pg. 11.
Adjust tension. See Belt Replacement, pg. 11.
Check for worn keyway or pulley bore. Also
check for bent motor shaft. Replace parts if
necessary.
Tight belt.
Loose pulley.
Pulley misalignment. Motor pulley and flywheel grooves must be in line
within 1/32".
Squealing sound Loose belt. Adjust tension. See Belt Replacement, pg. 11.
There is no oil in the compressor. Add oil.
Motor will not run Motor overload protection switch Let motor coot off and reset switch by pressing th_
has tripped, red button located on the end of the motor.
Tank pressure exceeds pressure
switch "cut-in" pressure.
Wrong gauge wire or length of
extension cord.
Check valve stuck open.
Loose electrical connections.
Motor will start automatically when tank pressur_
drops below "cut-in" pressure of pressure switch.
Check for proper gauge wire and cord length.
Remove and clean or replace. DO NOT OVER
TIGHTEN.
Unplug the compressor. Check wiring connec-
tion inside pressure switch and motor terminal
box area.
Possible defective capacitor.
Paint on internal motor parts.
Return to Sears Service Center for inspection o
replacement if necessary,
Have motor checked at a Sears Service Center.
Do not operate compressor in or near a paint
spray area.
Possible defective motor.
Fuse blown, circuit breaker
tripped.
Pressure release valve on pres-
sure switch has not unloaded
head pressure.
Have checked at a local Sears Service Center.
t. Check fuse box for blown fuse and replace i
necessary. Re-set circuit breaker. Do not use
fuse or circuit breaker with higher rating thal
that specified for your particular branch circuit
2. Check for proper fuse; only Buss Fusetron Typ{
"T" fuses are acceptable.
3. Check for low voltage conditions and/or prope
extension cord.
4. Remove check valve and clean or replace if it i
stuck open or closed.
5. Disconnect the other electrical appliances fror
circuit or operate the compressor on its ow
branch circuit.
Bleed the line by pushing the lever on the pressur
switch to the "OFF" position; if valve does n(
open, replace it.
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