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Risk of Unsafe Operation. Performing repairs may expose
voltage sources, moving parts or compressed air sources.
Personal injury may occur. Prior to attempting any repairs, unplug the air
compressor and bleed off aft air tank air pressure.
PROBLEM
Excessive tank pres-
sure - safety valve
pops off.
Air leaks at fittings.
Air leak from safety
valve.
Knocking Noise.
Pressure reading on
the regulated pres-
sure gauge drops
when an accessory
is used.
CAUSE
i Pressure switch does not shut
i oft motor when compressor
reaches "cut-out" pressure.
Pressure switch "cut-out" too
high.
Tube fittings are not tight
enough.
Possible defect in safety valve.
Possible defect in safety valve.
It is normal for "some" pressure
drop to occur.
CORRECTION
Move Off/Auto switch
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 any exposed fit-
tings with soapy water
solution. DO NOT
OVERTIGHTEN.
Apply thread seal tape to
threads of exposed fit-
tings.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
Contact a Trained Service
Technician.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
Contact a Trained Service
Technician.
If there is an excessive
amount of pressure drop
when the accessory is
used, adjust the regulator
following the instructions
in the Description of
Operation paragraph in
the Operation section.
NOTE: Adjust the regu-
lated pressure under flow
conditions (while acces-
sory is being used).
18- ENG
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