Operational Handling; Safety Warnings; Starting/Stopping Requirements; Spray Pattern Test - Walther PILOT WA 500 Instructions De Service

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Operational Handling

5.1

Safety Warnings

Please pay special attention to the following safety warnings prior to taking this spray
gun into operation!
• Wear proper respiratory protection masks and protective overalls, whenever
you are operating this spray gun.
Air-borne particles represent a health hazard.
• Make sure to wear suitable haering protectors. The gun produces sound
levels of up to 86 dB (A) may cause hearing defects.
• Open fires, naked lights and smoking prohibited in the working area.
Spraying of readily flammable media such as paints and adhesive com-
pounds is always accompanied by the risk of fire and explosion.
5.2 Starting / Stopping Requirements
The following requirements must be met before taking this spray gun into operation:
• control air must be available at the gun
• atomizing air must be availabe at the gun
• material pressure must be availabe at the gun.
Caution
The material pressure shall not exceed
• 10 bar, as, otherwise, the functional reliability of the spray gun will suffer.
Adjust the control air pressure to
• at least 4 bar, in order to operate the spray gun.
The operation of the spray gun can be started/stopped by way of the 3/2-way control
valve (see the Operating Instructions of the plant systems manufacturer).
Warning
It is important to remember that the spray gun must be relieved of all pressures whene-
ver work is terminated. Lines left in pressurized condition could burst, with their contents
likely to injure anybody present nearby.
5.3

Spray Pattern Test

Spray pattern tests should be performed whenever:
• the spray gun is taken into operation for the first time
• the spraying medium is changed
• the spray gun was taken apart for servicing or repairs.
The spray pattern can be tested using a work piece sample, a sheet of metal, cardboard
or paper.
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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 PILOT WA 500, WA 510, WA 520 and WA 530 can be
adjusted as follows:
Adjusting the jet pattern
An optimun spray pattern can be
adjusted by using control screws 1
and 2.
2
The control screw 1 regulates the
1
round jet, the control screw 2 the
wide/flat jet.
Adjustment of the material flow rate
Turn cap 1 from the standard position
(= notch mark on the piston housing)
1
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 is
used.
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