User manual

41
OPERATING MANUAL
VERSION 03/2013 ORDER NUMBER DOC 2310799
8 TROUBLESHOOTING AND RECTIFICATION
Problem Cause Remedy
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 gage
(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., two-component
material hardened).
Dismount and clean  uid section, replace
high-pressure hose.
Sometimes, the pump stops at a
switching point.
Press the starter on the reversing valve and
restart the pump.
Clean the slide on the reverse valve carefully
and if necessary lubricate it with a light
layer of oil.
Poor spray pattern See gun instructions.
Irregular pump
operation: spray jet
collapses (pulsation).
Viscosity is too high. Thin spraying material.
Spraying pressure is too low. Increase air inlet pressure.
Use a smaller nozzle.
Valves are clogged. Clean pump, if necessary leave it to soak in
solvent.
Foreign body in suction valve. Dismount 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 evenly,
does not however,
suck up material.
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.
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.