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OPERATING MANUAL
VERSION 12/2012 ORDER NUMBER DOC 2330426
8 TROUBLE SHOOTING AND PROBLEM SOLVING
Problem Cause Remedy
The pump does not
work.
The air motor does not work or
stops.
Close the air cuto valve, increase the
pressure and open the air cuto valve
immediately.
No pressure indication
(pressure regulator defective).
Disconnect compressed air supply brie y or
repair or replace the pressure regulator.
The delivery line is clogged. Check the delivery line.
Insu cient supply of compressed
air.
Check the compressed air supply.
The lter in delivery line is clogged
(if installed).
Clean or replace the lter.
The unit is working (i.e.:
the pump is moving),
but no uid is delivered.
The suction lter is clogged
(if installed).
Carefully clean the lter.
No uid is available at the pump’s
inlet.
Check the uid level in the tank or
container.
The suction pipe is clogged or
leaking (possibility of sucking air in
from the atmosphere).
Check the suction pipe. Replace it if
necessary.
The material ow is
suspended.
The suction pipe is partially
clogged.
Check the suction pipe. Replace it if
necessary.
Cavitation
(air bubbles in the liquid).
Check the suction in the tank. Exclude air
intake due to high viscosity.
The material check valve doesn't
completely close.
Check for impurities on the valve seats.
Replace the check valves if necessary.
The pump supply
decreases during work.
Partial clogging of the delivery line. Check the delivery line.
Deviations of the material
characteristics (like viscosity).
Check the material characteristics.
Ice formation inside the air outlet
pipes.
Check the compressed air quality.
Install a condensation separator on the air
line.
Install an air dryer if necessary.
Fill one lubricant with special de-icing uid.
The pump supply
decreases during work,
and tends to stop
completely.
The delivery manifold valves guides
are worn-out.
Replace the delivery manifold (or in the case
of plastic pumps, replace the insert).