49
OPERATING MANUAL
VERSION 12/2015
ORDER NUMBER DOC2333558
9 TROUBLESHOOTING AND RECTIFICATION
Problem Cause Remedy
The pump does not
work
Air motor does not work or stops. Open and close ball valve on the pressure
regulator unit or brie y disconnect
compressed air supply.
No pressure indication on the
pressure gauge (air pressure
regulator defective).
Disconnect compressed air supply brie y or
repair or change pressure regulator.
Spray nozzle is clogged. Clean the nozzle according to the
instructions.
Insu cient compressed air supply. Check compressed air supply.
Filter insert in spray gun is clogged. Clean the parts and use a suitable working
material.
Fluid section or high-pressure
hose are blocked (e.g., 2K product
hardened).
Dismount and clean uid section, replace
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 necessary lubricate it with a
light layer of oil.
Poor spray pattern See the gun instructions.
Irregular operation of
the pump: spray jet
collapses (pulsation)
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
solvent.
Foreign body in suction valve. Dismantle suction valve housing, clean and
check valve seat.
Diameter of compressed air line too
small.
Assemble a larger incoming line
-> Technical Data, Chapter 5.3.2.
Valves, packings, or pistons are worn
out.
Replace the parts.
Pressure regulator lter is clogged. Check lter and clean it if necessary.
The pump runs
smoothly 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 lter is clogged. Clean lter.
Ball in suction or piston valve is stuck. Clean balls and valve seats.
Pump runs when the
gun is closed
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.
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