17
Trouble
Cause
Solution
No fluid out of the gun
•
Clogged nozzle
•
Cut the pressure on
the pump.
Depressurize the hoses.
•
Remove and clean
the nozzle with solvent
by means of the brush.
•
Check the seal
condition.
Pattern width narrows
during reversing phase of
the pump
•
Air trapped in the fluid
circuit
•
Check connections
and suction hose
quality.
•
Viscosity too high
•
Reduce viscosity.
Aircap becomes dirty
frequently
•
Too much atomizing
air
•
Reduce air pressure.
Fluid seeping from the air
holes of the aircap
•
Defective nozzle seal
•
Replace it.
•
Nozzle loose
•
Tighten it.
Fluid leak at the packing
•
Packing is worn
•
Tighten up the packing
holder without
blocking the needle.
•
If there is still a leak,
replace the packing
and the needle.
Fluid leak at the front part
of the gun, trigger released
•
Impurities in the paint
•
Trigger the gun 3 or 4
times.
•
Needle worn or/and
nozzle worn
•
Replace needle
or/and nozzle.
Air leak at the valve
•
Valve worn
•
Change the valve.
Permanent air leak at the
gun aircap when the
trigger is released
•
Friction on the needle
•
Remove the trigger
and check that the
needle slides freely.
•
Valve worn
•
Replace the valve.
