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MANUAL - SPRAY GUN CLEANERS - UG1000-3000 SERIES
TROUBLESHOOTING PROCEDURES
PROCEDURE 1
Blocked Fluid Passage In Diaphagm Pump
If the pump sounds like it is working but solvent does not flow, follow one
of the procedures below to clear the fluid passage.
If you have a brass suction pipe:
•
Disconnect the suction hose from the suction pipe and blow air at
85 PSI into the suction hose. See diagram. Turn timer. This proce-
dure may have to be repeated several times. If this procedure
does not help, blow some solvent into the suction hose using a
spray gun, wait one minute and turn timer. This procedure may
have to be repeated several times. If this procedure does not
work, the pump must be replaced.
If you have a stainless steel suction pipe:
•
Lift the suction pipe out of the solvent pail. See diagram. Blow air
at 85 PSI into the bottom of the suction pipe. Turn timer. This pro-
cedure may have to be repeated several times. If this procedure
does not help, blow some solvent into the suction hose using a
spray gun, wait one minute and turn timer. This procedure may
have to be repeated several times. If this procedure does not
work, replace the pump.
•
Cause:
The check valve is stuck due to excessively contaminat-
ed solvent.
•
Preventative Action:
Remove debris from the filter pad and
wash pad when there is excessive build up of paint debris.
Replace the filter pad if damaged. Recycle or replace dirty sol-
vent more often.
If you need to replace the pump call your local dealer. The warranty
on the diaphragm pump is two years from date of purchase.
PROCEDURE 2
Blocked Air Passage In Diaphragm Pump
If there is a steady hissing sound and the pump is not cycling, the spool valve has stalled due to a
blocked air passage. Follow the procedure below to clear the blockage.
•
Connect a blow gun to an 80 PSI source. Locate the blue hose that extends from the air
exhaust port of the diaphragm pump. Use a blow gun to blow air into the open end of this hose.
Turn timer. If the procedure is successful, the pump will start working. The procedure may have
to be repeated several times. If this procedure does not work, replace the pump.
•
Cause:
Contaminants in the air supply (water, oil, solid particles etc)
•
Preventative Action:
Drain liquid from the moisture filter. Install a Air Filter if one is absent.
