WAGNER EvoMotion 20-30 - Troubleshooting and Rectification

Operating manual Piston Pump EvoMotion 20-30
9 Troubleshooting and Rectification
Order number 2333553 | Edition 09/2020 45
9 TROUBLESHOOTING AND RECTIFICATION
Malfunction Cause Remedy
The pump does not
work.
The pump does not start or stops. Open and close ball valve on the pres-
sure regulator unit or briefly disconnect
compressed air supply.
No pressure indication on the pressure
gauge (air pressure regulator defec-
tive).
Disconnect compressed air supply
briefly or repair or change pressure regu-
lator.
Spray nozzle is clogged. Clean the nozzle according to the in-
structions.
Insufficient compressed air supply. Check compressed air supply.
Filter insert in spray gun is clogged. Clean the parts and use a suitable work-
ing material.
Fluid section or high-pressure hose is
blocked (e.g., 2K product hardened).
Dismount and clean fluid section, re-
place high-pressure hose.
Sometimes, the pump stops at a
switching point.
Press the starter on the reverse valve
and restart the pump. Clean the slide on
the reversing valve carefully and, if nec-
essary, lubricate it with a light layer of
oil.
Poor spray pattern. See the gun instructions.
Irregular operation of
product pump: Spray
jet collapses (pulsa-
tion).
Viscosity is too high. Thin spraying product.
Spraying pressure is too low. Increase incoming air pressure.
Use a smaller nozzle.
Valves are clogged. Clean pump. If necessary, leave it to soak
in cleaning agent.
Foreign body in suction valve. Dismantle suction valve housing, clean
and check valve seat.
Diameter of compressed air line too
small.
Assemble a larger supply line -> chapter
Technical Data [820]
Valves, packings, or pistons are worn
out.
Replace the parts.
Pressure regulator filter is clogged. Check and clean it if necessary.
The pump runs evenly,
but does not suck up
any product.
The suction system's union nut is loose;
the pump is taking in air.
Tighten union nut.
Suction filter is clogged. Clean filter.
Ball in suction or piston valve is stuck. Clean balls and valve seats.
The pump is working
with a closed spray
gun.
Packings, valves, or pistons are worn
out.
Replace the parts.
The air motor is iced up There is a lot of condensation water in
the air supply.
Install a water separator.
If none of the causes of malfunction mentioned are present, the defect can be remedied by a
WAGNER service center.