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Operating manual Pneumatic double diaphragm pump TOPFINISH DD10 Alu NiP
9 Troubleshooting and Rectification
9 TROUBLESHOOTING AND RECTIFICATION
Malfunction
The pump does not
work.
Poor spray pattern.
Irregular operation of
product pump: Spray
jet collapses (pulsa-
tion).
Highly irregular opera-
tion of product pump.
The pump runs evenly,
but does not suck up
any product.
Pump runs fast when
the spray gun is closed.
Loss of power due to
severe icing.
If none of the causes of malfunction mentioned are present, the defect can be remedied by a
WAGNER service center.
Order number DOC 2366672 | Edition 08/2020
Cause
The pump does not start or stops.
No pressure indication on the pressure
gauge (air pressure regulator defec-
tive).
Spray nozzle is clogged.
Insufficient compressed air supply.
Filter insert in spray gun is clogged.
Clogging in the fluid section or hose
(e.g. 2K material cured).
Grease in spool and sleeve assembly.
Occasionally, the pump stops at the re-
versal point.
See the gun instructions.
Viscosity is too high.
Spraying pressure is too low.
Foreign body in suction valve.
Diameter of compressed air line too
small.
Worn out valves.
Control air filter or work air filter is
clogged.
Diaphragms "blocked" because suction
is too fast.
The suction system's union nut is loose;
the pump is taking in air.
Suction filter is clogged.
Valves worn.
There is a lot of condensation water in
the air supply.
Remedy
Open and close ball valve on the pres-
sure regulator unit or briefly disconnect
compressed air supply.
Disconnect compressed air supply
briefly or repair or change pressure regu-
lator.
Clean the nozzle according to the in-
structions.
Check compressed air supply.
Clean the parts and use a suitable work-
ing material.
Dismount and clean fluid section, re-
place hose.
Degrease spool and sleeve assembly.
Check detent body.
Thin spraying product.
Increase incoming air pressure.
Use a smaller nozzle.
Dismantle suction valve housing, clean
and check valve seat.
Provide a larger supply line.
See Chapter Technical Data [8 19] for
technical specifications.
Replace the parts.
Check and clean it if necessary.
Operate pump temporarily with ball
valve opened a minimal amount.
Tighten.
Clean filter.
Replace the parts.
Install a water separator.
41
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