PrOBLeM
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.
CAUSE
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
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.
19 - ENG