Craftsman 919.724321 Manuel Du Propriétaire page 22

PROBLEM
Pressure reading
on the regulated
pressure gauge
drops when an
accessory is
used.
Knocking Noise.
Compressor is
not supplying
enough air to
operate acces-
sories.
Regulator knob
has continuous
air leak.
A14411
CAUSE
It is normal for "some" pres-
sure drop to occur.
Possible defect in safety
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
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 condi-
tions (while accessory is
being used).
Operate safety valve manu-
ally by pulling on ring. If
valve still leaks, it should be
replaced.
Remove and clean, or
replace.
Decrease amount of air
usage.
Check the accessory air
requirement. If it is higher
than the SCFM or pressure
supplied by your air com-
pressor, 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 fil-
ter removed. Refer to the
"Air Filter" paragraph in the
"Maintenance " section.
Replace
22- ENG
CORRECTION