Troubleshooting And Rectification - WAGNER ZIP52 Translation Of The Original Operating Manual

Operating manual Pneumatic double diaphragm pump ZIP52 - ZIP80
9 Troubleshooting and Rectification
9 TROUBLESHOOTING AND RECTIFICATION
Problem Cause
The pump does not The air motor does not work or
work. stops.
No pressure indication (pressure
regulator defective)
The delivery line is clogged.
Insufficient compressed air supply. Check the compressed air supply.
The filter in the delivery line is
clogged (if installed).
The device is work- The suction filter is clogged (if in-
ing (i.e., the pump is stalled).
moving), but no fluid
No fluid is available at the pump's
is delivered.
inlet.
The suction tube is clogged or
leaking (is possibly sucking air in
from the atmosphere).
The product flow is The suction tube is partially
suspended. clogged.
Cavitation (air bubbles in the liq-
uid)
The non-return valve doesn't com-
pletely close.
The pump supply Partial clogging of the delivery
decreases while line.
working.
Deviations in
product characteristics (such as
viscosity).
Ice formation inside the air outlet
pipes.
The pump supply The non-return valves' guides in
decreases during the delivery manifold are worn-
work, and tends to out.
stop completely.
The product delivery The product delivery valve or the
valve is closed, nev- delivery manifold leaks.
ertheless the pump
Dirty or worn-out non-return
continues to run
valves in the delivery and suction
even if the air cut-off
manifold.
valve is closed.
If none of the causes of malfunction mentioned are present, the defect can be remedied by a
WAGNER service center.
48
Remedy
Close the air cut-off valve, increase the pressure,
then open the air cut-off valve immediately.
Disconnect compressed air supply briefly or re-
pair or replace the pressure regulator.
Check the delivery line.
Clean or replace the filter.
Carefully clean the filter.
Check the fluid level in the tank or container.
Check the suction tube. Replace it if necessary.
Check the suction tube. Replace it if necessary.
Check the suction in the tank. Exclude air suc-
tion due to high viscosity.
Check for impurities on the valve seats. Replace
the non-return valves if necessary.
Check the delivery line.
Check the product characteristics.
Check the compressed air quality.
Install a condensation separator in the air line.
Install an air dryer if necessary.
If necessary, install an oiler and fill it with special
de-icing fluid.
Replace the delivery manifold (or in the case of
plastic pumps, replace the insert).
Check the product delivery valve and the seals
of the delivery manifold.
Clean the non-return valves and replace them if
they are worn.
Order number DOC 2330426 | Edition 09/2021