Spray Pattern Adjustments; Correcting Spray Pattern Flaws; Troubleshooting And Fault Rectification - Walther PILOT PREMIUM Instrucciones De Servicio

Warning
Always relieve the pressure from the spray gun after work is completed. The pres-
surized lines may rupture and persons standing nearby may be injured by the escap-
ing material.
Note
The gun must be flushed before use to prevent contamination of the spraying mate-
rial.
6

Spray pattern adjustments

You can change the spray pattern on the PILOT PREMIUM by making the following
settings.
Material
connection
Adjust the material pressure:
Material connection:
You can adjust the material pressure only on the pump or the pressure tank. Please
follow the directions and safety instructions of the manufacturer.
Adjusting wide or round spray:
The regulating screw is used to regulate the
spraying width. By turning it to the left
(unscrewing), the spray becomes wide, by
turning it to the right (screwing down) it
becomes round.
Adjusting the material flow volume:
The material volume can be regulated by
turning the adjusting screw in or out. The
material volume is increased by turning it to
the left (unscrewing) and reduced by turning
it to the right (screwing down).
Adjusting the air volume:
The spray air volume can be regulated by
turning the adjusting screw in or out.
Air connection
36
6.1

Correcting spray pattern flaws

The following table shows the settings you can use to change the spray pattern.
Spray pattern test Deviation
Spray pattern is split in
the centre
Spray pattern is too thick
at the ends
The spray pattern shows
rather large droplets
Material application in
the centre of the spray
pattern is very thin
Spray pattern is split in
the centre
Spray pattern is very
spherical
7

Troubleshooting and fault rectification

Warning
Before each change-over depressurize the spray air as well as the material supply
to the spray gun - risk of injury.
Fault Cause
Gun drips Material needle or nozzle dirty or
damaged
Spring cap (item 13) turned too far
back
Pulsating or insufficient material in the material
shimming spray container
beam
Cup is tilted too much during the
spraying process
Material nozzle loose or damaged
The material is too heavy for the
suction supply
Gun emits spray Valve spring (item 25) or valve
in idle position cone (item 24) damaged
37
desired spray result
Required adjustment
• setting a wider spray pattern
• Setting a more rounded
spray pattern
• Increase the nozzle air pres-
sure
• Decrease the nozzle air
pressure
• Increase the nozzle diameter
• Reduce nozzle air pressure
• Increase material pressure
• Reduce material pressure
• Increase nozzle air pressure
Remedy
• Clean or replace
• Slightly turn down the
adjustment screw (clock-
wise)
• Refill the material
• Hold straighter
• Tighten, if necessary,
replace air distributor
ring (item 5)
• Use pressure tank or
pump system for delivery
• replace