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PROBLEM
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.
CAUSE
It is normal for "some"
pressure drop to occur.
Possible defect in safety valve
Knocking Noise.
Compressor
is
not supplying
enough air to
operate acces-
sories.
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.
CORRECTION
If there is an excessive
amount of pressure drop
when the accessory is used,
adjust the regulator follow-
ing the instructions
in the
"Description of Operation"
paragraph in the Operation
Section.
NOTE: Adjust the regulated
pressure under flow
conditions
(while accessory is
beinq used).
. Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Remove and clean, or
replace.
Decrease amount of air us-
age.
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.
Remove and clean, or
replace,
Tighten fittings.
Clean or replace air intake
filter. Do not operate the air
compressor
with the filter
removed. Refer to the "Air
Filter" paragraph in the
Maintenance section.
Regulator knob
Damaged regulator.
Replace.
has continuous
air leak.
21- ENG
A16751
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