DeVilbiss L1130GH2 Instrucciones Generales página 17

PROBLEM
Air leaks (cont)
Low Discharge Pressure
Knocking
TROUBLESHOOTING CHART (Continued)
Air leak in safety valve.
Defective check valve.
Prolonged excessive use of air.
Restricted check valve.
Restricted air intake filter.
Air leaks.
Hole in hose or air piping.
Faulty pump.
Loose pulley.
Low oil level (compressor pump
and/or gasoline engine).
Restricted check valve.
Wrong oil used.
Compressor and/or engine bolts
loose.
Excessive carbon deposits in head.
CAUSE
PAGE 17
CORRECTION
Operate safety valve manually by
pulling on ring. If valve still leaks, it
should be replaced.
If safety valve or unloader valve re-
placement is necessary, a part with
the same pressure rating must be
used.
A defective check valve results in a
constant air leak, back through the
unloader valve when there is pressure
in the air tank and the compressor is
not running. Turn the engine off; move
the unloader valve toggle lever to the
vertical position. If air leaks out of the
tank through the unloader valve, clean
or replace the check valve. Remove
and clean or replace, check valve.
(Do not overtighten).
Decrease amount of air usage.
Remove and clean, or replace.
Clean or replace air intake filter.
Tighten fittings.
Check and replace if required.
Authorized Warranty Service
Center to repair or replace.
Tighten pulley set screw. (145-165
in-lbs.)
Check oil level and maintain at
prescribed level.
Remove and clean or replace.
Follow oil recommendations listed
in the "Gasoline Engine Owners
Manual". For engine see page 10
for Pump Oil Recommendations.
Check all bolts and tighten as
required.
Remove the head and valve plate.
Clean top of piston and bottom of
valve plate. Reassemble using new
gaskets and torque screws to 30-
33 foot-pounds.