18- ENG
Westward Operating Instructions and Parts Manual
Model 3JR71
Portable Air Compressor
Symptom (s)
Possible Causes (s)
Corrective Actions (s)
Voltage sources, moving parts, or compressed air sources
are exposed when repairing the compressor. Personal
injury can occur. Unplug the compressor before attempting any repairs.
Troubleshooting Chart
1. Pressure switch does
not shut off motor when
compressor reaches
cut-out pressure.
2. Pressure switch cut-
out too high.
1. Move On/Auto/Off lever
to the OFF position. If
the outfit does not shut
off contact a trained
service technician.
2. Contact a trained service
technician.
Excessive tank
pressure - safety
valve pops off.
1. Tube fittings are not
tight enough.
1. Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution.
Do Not
Overtighten.
Air leaks at
fittings.
Air leaks at
pressure switch
release valve.
1. Defective pressure
switch release valve.
1. Contact a trained service
technician.
Air leaks at or
inside check
valve
1. Check valve seat
damaged.
1. A defective check valve
results in a constant air
leak at the pressure
release valve when there
is pressure in the tank
and the compressor is
shut off. Replace check
valve. Refer to the To
Replace or Clean Check
Valve in the Service
and Adjustment section.
Air leaks in air
tank or at air
tank welds.
1. Air tank must be
replaced. Do not repair
the leak.
Do not drill
into, weld
or otherwise modify air
tank or it will weaken. The
tank can rupture or
explode.
1. Defective air tank.
Содержание 3JR71
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