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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 elec-
trical supply to the air compressor, bleed tank of pressure, and allow the air
compressor to cool.
PROBLEM
Excessive
Pressure switch does
tank pressure
not 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
fittings
tight enough.
Air leaks at
Check valve seat
or inside
damaged.
check valve
Air leaks at
Defective pressure
pressure switch
switch release valve.
release valve
Air leaks in air
Defective air tank.
tank or at air
tank welds
Air leaks
Leaking seal.
between head
and valve plate
Pressure
It is normal for "some"
reading on
pressure drop to occur.
the regulated
pressure gauge
(if equipped)
drops when
an accessory
is used
Air leak from
Possible defect in
safety valve
safety valve.
TROUBLESHOOTING
CAUSE
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 OVER TIGHTEN.
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 the To Replace or Clean
Check Valve in the Service
and Adjustments section.
Contact a Trained Service Technician.
Air tank must be replaced.
Do not repair the leak.
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.
If there is an excessive amount of
pressure drop when the accessory
is used, adjust the regulator as
instructed in the Operation section.
NOTE: Adjust the regulated pres-
sure under flow conditions (while
accessory is being used).
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
21 - ENG
CORRECTION
Risk of bursting.
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