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d:{ollJ :] il ::F-"]-"[oIo]l III_[I
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 - safet
valve pops off.
Air leaks at
fittings.
Air leaks at or
inside check
valve.
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.
Check valve seat damaged.
Air leaks at Defective pressure switch
pressure switch release valve.
release valve.
Defective air tank.Air leaks in air
tank or at air
tank welds.
CORRECTION
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
Overfi_lhten.
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" section.
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.
Air leaks Leaking seal. Contact a Trained Service
between head Technician.
and valve plate.
21_ENG A00844
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