Troubleshooting - Craftsman 919.167241 Owner's Manual

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Risk of Unsafer Operation. Performing repairs may expose
voltage sources, moving parts, or compressed air sources.
Personal injury may occur. Before servicing: Unplug or disconnect
electrical supply to the air compressor, bleed tank of pressure, and allow
the air compressor to cool.
PROBLEM
Excessive tank
pressure - safer
valve pops off.
Air leaks at
fittings.
Air leaks in air
tank or at air
tank welds.
CAUSE
Pressure switch does not
shut off motor when
compressor reaches "cut-
out" pressure.
Pressure switch "cut-out"
too high.
Tube fittings are not tight
enough.
Defective air tank.
Air leaks Leaking seal.
between head
and valve plate.
Air leak from
safety valve.
Knocking Noise.
Possible defect in safety
valve.
Possible defect in safety
valve.
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
fittings with soapy water
solution. Do Not
Overfi_hten.
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.
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.
19_ ENG D29408