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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 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.
TROUBLESHOOTING
Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to
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.
Leaking seal.
Possible defect in safety
valve.
Possible defect in safety
valve.
CAUSE
17 - ENG
CORRECTION
Move On/Off lever to the
"Off" position, if the out-
fit does not shut off con-
tact a Trained Service
Technician.
Contact a Trained
Service Technician.
Tighten fittings where
air can be heard escap-
ing. Check fittings with
soapy water solution. Do
Not Overtighten.
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.
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.
1000002203
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