Troubleshooting Guide - Craftsman 919.167783 Manual De Instrucciones

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Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to voltage
sources, compressed air, or moving parts. Before servicing unit unplug or
disconnect electrical supply to the air compressor, bleed tank of pressure,
and allow the air compressor to cool.
PROBLEM
Excessive Pressure switch does not
tank pressure
shut off motor when
- safety valve compressor reaches
pops off. "cut-out" pressure.
Pressure switch "cut-out"
too high.
Air leaks at Tube fittings are not tight
fittings. enough.
Air leaks at or Check valve seat damaged.
inside check
valve.
Air leaks at Defective pressure switch
pressure release valve.
switch release
valve.
Air leaks in air Defective air tank.
tank or at air
tank welds.
Air leaks Leaking seal.
between head
and valve
plate.
TROUBLESHOOTING
CAUSE
19 - ENG
CORRECTION
Move On/Auto/Off lever to
the "Off" position, if the
outfit does not shut off
contact a Trained Service
Technician.
Contact a Trained Service
Technician.
Tighten fittings where air can
be heard escaping. Check fit-
tings with soapy water solu-
tion. Do Not Overtighten.
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" sec-
tion.
Contact a Trained Service
Technician.
Air tank must be replaced. Do
not repair the leak.
Risk of
Bursting
Do not drill into, weld or
otherwise modify air tank or
it will weaken. The tank can
rupture or explode.
Contact a Trained Service
Technician.
A20361