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PROBLEM
Pressure read-
ing on the regu-
lated pressure
gauge drops
when an acces-
sory is used.
Knocking Noise. Possible defect in safety
Compressor is
not supplying
enough air
to operate
accessories.
Regulator knob
has continuous
air leak.
Regulator will
not shut off air
outlet.
1000002923
CAUSE
It is normal for "some"
pressure drop to occur.
valve.
Defective check valve.
Prolonged excessive use of
air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter.
Damaged regulator.
Damaged regulator.
CORRECTION
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 regulated
pressure under flow
conditions (while accessory is
being used).
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Replace check valve.
Decrease amount of air usage.
Check the accessory air
requirement. If it is higher
than the SCFM or pressure
supplied by your air
compressor, you need a
larger compressor.
Check and replace if required.
Replace check valve.
Tighten fittings.
Clean or replace air intake
filter. Do not operate the
air compressor with the fil-
ter removed. Refer to the
"Air Filter" paragraph in the
Maintenance section.
Replace.
Replace.
20- ENG
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