WALTHER PILOT PILOT WA XV Instructions De Service page 18

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 Re-
quirements).
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 PILOT WA XV / WA XV Needle-Pull l WA XV-ND can be
adjusted as follows.
Wide and / or Flat Jet Pattern
Wide / Flat and / or Round Jet Pattern
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1. Loosen the knurled air control head retaining
ring slightly.
2. Rotate the air control head horns into
• a vertical position
= flat jet pattern
• a horizontal position
= wide jet pattern
3. Tighten the air control head retaining ring
4. Loosen the lock nut using a Size 11 mm
wrench.
5. Turn the fine-adjusting screw in
• - direction = increase roundness of spray jet
contour
• + direction = increase wideness/flat-ness of
spray jet contour
6. Once the desired spray jet contour is adju-
sted tighten the lock nut .
Adjustment of the Material Flow Rate
1. Turn the material Input regulating screw
mark an the matrial needle adjuster) in
• - direction = decrease of flow rate.
• + direction = increase of flow rate.
Adjustment of the Material Pressure
This adjustment can only be made at the controls of the pumping or circulation
system or 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 to be adjusted at the air Pressure reducing valve of
the compressor system. Please comply with the Operating Instructions and Safety
Warnings issued by the manu-facturer.
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 offer a great variety of air control head/- material control nozzle/needle
combinations for this purpose.
Correcting of Spray Pattern Imperfections
The table below shows what to do to correct a spray Pattern.
Spray Pattern
.
from its normal position (= notch
desireable spray-painting result
Fault Adjustment
• increase wideness of spray
Swollen center
jet contour
• increase roundness of spray
Swollen ends
jet contour
• increase atomizing air pressu-
Coarse pearl effect
re
Unduly thin center paint • decrease atomizing air pres-
layer sure
• increase material flow rate
Split center concentration • decrease atomizing air press.
• increase material pressure
• decrease material pressure
Crowned center paint layer
• increase atomizing air press.
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