Spray Pattern Adjustments - WALTHER PILOT PILOT WA 705 Manual De Instrucciones

Warning
Keep away from the front of the spray gun - imminent risk of injury.
Warning
Make sure that nobody is present in the spraying zone when the gun is started -
imminent Risk of Injury.
1. Start the gun to produce a spray pattern sample (see 5.2. Starting/Stopping
Requirements).
2. Inspect the sample and readjust the settings of the gun as may be required
(see 5.4 Spray Pattern Adjustments).
5.4

Spray Pattern Adjustments

The spray pattern of the of the series PILOT WA 7XX models can be adjusted as
follows:
Adjusting the jet pattern
R
B
The spray pattern is adjusted by a ressure
regulator in the plant (see operating
instructions of plant systems manufacturer).
The connection B is for the wide jet,
the connection R is for the round jet.
Adjustment of the material flow rate
1
Turn cap (1) from the standard position.
2
• to the inside in order to decrease the material
flow rate.
• to the outside in order to increase the material
flow rate.
The material flow through the nozzle can be
performed without using atomizing air, when the
drawbar (2).
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Adjustment of the Material Pressure
This adjustment can only be made at the pump or the material pressure tank.
Please comply with the operating instructions and safety warnings issued by the
manufacturers concerned.
Adjustment of the Atomizing Air Pressure
The atomizing air pressure is adjusted at the air pressure reducing valve of the
compressor system. Please comply with the operating instructions and safety war-
nings issued by the manufacturer.
If you wish to change the spraying pattern beyond the adjustments outlined so far,
you must retool the spray gun (See 5.5 Retooling of Spray Gun).
WALTHER offers a great variety of air cap/-material nozzle/needle combinations for
this purpose.
Correcting of Spray Pattern Imperfections
The following table shows what to do to correct a spray pattern.
desired spray result
Spray pattern Fault
test
Swollen centre
Swollen ends
Coarse pearl effect
Unduly thin paint layer in
centre
Split centre
Split centre
Necessary adjustment
• Spray jet should be flatter
• Spray jet should be rounder
• Increase atomising air
pressure
• Decrease atomising air
pressure
• Increase nozzle diameter
• Reduce atomising air
pressure
• Increase material pressure
• Decrease material pressure
• Increase atomising air
pressure
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