Westward 4YD76B Instrucciones Operativas página 16

Westward Operating Instructions and Parts Manual
injury can occur. Unplug the compressor before attempting any repairs.
Troubleshooting Chart
Symptom (s)
Excessive tank
pressure - safety
valve pops off.
Air leaks at
fittings.
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
Air leak from
safety valve.
Knocking Noise.
Portable Air Compressor
Voltage sources, moving parts, or compressed air sources
are exposed when repairing the compressor. Personal
Possible Causes (s)
1. Pressure switch does
not shut off motor when
compressor reaches
"cut-out" pressure.
2. Pressure switch "cut-
out" too high.
1. Tube fittings are not
tight enough.
1. Defective air tank.
1. Leaking seal.
1. Possible defect in
safety valve.
1. Possible defect in safety
valve.
Corrective Actions (s)
1.
2.
1.
1.
or otherwise modify air
tank or it will weaken. The
tank can rupture or
explode.
1.
1.
1.
16- ENG
Model 4YD76B
Move On/Auto/Off lever
to the "OFF" position. If
the unit does not shut off
contact a trained service
technician.
Contact a trained service
technician.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten.
Air tank must be
replaced. Do not repair
the leak.
Do not drill
into, weld
Contact a trained service
technician.
Operate safety valve
manually by pulling on
ring. If valve still leaks, it
should be replaced.
Operate safety valve
manually by pulling on
ring. If valve still leaks, it
should be replaced.