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17 - ENG 1000003754
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to voltage sources, com-
pressed 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 CAUSE CORRECTION
Excessive tank pressure
- safety valve pops off.
Pressure switch does
not shut off motor when
compressor reaches
"cut-out" pressure.
Move On/Off lever to
the "Off" position, if
the outfit does not shut
off contact a Trained
Service Technician.
Pressure switch "cut-
out" too high.
Contact a Trained
Service Technician.
Air leaks at fittings. Tube fittings are not
tight enough.
Tighten fittings where air
can be heard escaping.
Check fittings with
soapy water solution.
Do Not Overtighten.
Air leaks in air tank or at
air tank welds.
Defective air tank. Air tank must be
replaced. Do not repair
the leak.
Risk
bursting. Do not drill
into, weld or otherwise
modify air tank or it will
weaken. The tank can
rupture or explode.
Air leaks between head
and valve plate.
Leaking seal. Contact a Trained
Service Technician.
Air leak from safety
valve.
Possible defect in
safety valve.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.
Knocking Noise. Possible defect in
safety valve.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.