WAGNER PM500, Operating Manual, Page: 33 / 52

33
OPERATING MANUAL
VERSION 01/2013 ORDER NUMBER DOC 2335747
8
TROUBLE SHOOTING AND RECTIFICATION
Problem Cause Remedy
Pump does not work. The air motor does not work or
stops. Turn the pressure regulator knob clockwise
to a minimum of 2 bar.
Press the actuation button on one end of
the reversing valve until the reversing valve
switches over. The air fl ows out audibly.
No pressure indication
(pressure regulator defective). Disconnect compressed air supply briefl y or
repair or replace the pressure regulator.
The delivery line is clogged. Check the delivery line.
Insuffi cient compressed air supply. Check the compressed air supply.
The fi lter in delivery line is clogged
(if installed). Clean or replace the fi lter.
The unit is working
(i.e.: the pump is
moving), but no fl uid is
delivered. The suction fi lter is clogged
(if installed). Carefully clean the fi lter.
No fl uid is available at the pump’s
inlet. Check the fl 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 fl 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 non-return valve doesn't
completely close. Check for impurities on the valve seats.
Replace the non-return 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.
If necessary, install an oiler and fi ll it with
special de-icing fl uid.