Spray Pattern Test; Spray Pattern Adjustments; Retooling Of Spray Gun; Servicing And Maintenance - WALTHER PILOT WA 30 Instructions De Service

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 is best tested using a workpiece sample, a sheet of metal, card-
board or paper.
Warning
Keep away from the front of the spray gun - the extremely high spraying pressure
(350 bar) can cause severe injuries.
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 also 5.2 "Starting /
Stopping Requirements).
2. Inspect the sample and readjust the settings of the gun as may be required
(see also 5.4 "Spray Pattern Adjustments").
5.4

Spray Pattern Adjustments

The spray pattern of the PILOT WA 30 gun may be adjusted as follows:
Adjustment of the Material Flow Volume
The flow volume depends on the spray tip size which, in turn, determines the spray
jet width. So it is best to start with selecting the appropriate spray tip size. The next
step would then be an adjustment of the material pressure at the flow regulator valve.
Adjustment of the Material Pressure
Select the required material pressure by adjusting the pump pressure in combination
with the material flow regulator valve. Make sure to comply with the Operating
Instructions and Safety Warnings issued be the manufacturers concerned.
If you wish to change the spraying pattern beyond the adjustments outlined so far,
you should retool the spray gun (see 5.5 "Retooling of Spray Gun").
5.5

Retooling of Spray Gun

Warning
Make sure that all pressures are removed from the gun and the system before retoo-
ling - risk of injury.
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Warning
Shut the air and material input off before retooling - risk of injury.
Note
See the drawing for detailed information when performing the retooling steps
outlined below.
Replacement of Material Outlet Nozzle (i.e. Airless Spray Tip)
1. Remove the sleeve nut (Item 15) (use a Size 22 mm wrench)
2. Remove the Airless spray tip (Item 16) and seal (Item 17) from the gun body
Installation of another or new Airless spray tip to be in reverse order.
Replacement of Material Filters
Coarse- or fine-grade filters may be used for efficient material filtration.
1. Remove all pressures from the gun and the system
2. Remove the material hose(s)
3. Remove the material filter
Installation of new filters to be in reverse order.
6

Servicing and Maintenance

6.1

Safety Warnings

• Remove all pressures from the gun and the system before performing any ser-
vicing and/or maintenance work - imminent risk of injury.
• Shut the air and material input off before retooling - risk of injury.
• No open fires and naked lights as well as smoking are allowed in the work area
- risk of fire and explosion, particularly when spraying readily flammable media
such as, for example, paints, lacquers, cleaning solutions, etc.
• All processing specifications and safety warnings issued by the manufacturers
of spraying and cleaning media must be duly complied with. Aggressive and
corrosive media represent risks and hazards to personal health.
6.2

Cleaning - Complete

It is recommended practice to clean and lubricate the spray gun at regular intervals
as this will greatly help towards ensuring a long service life and functional reliability.
Caution
Never immerse the spray gun in solvent or any other cleaning solution as such
measure is highly likely to affect the functional reliability and efficiency of the gun.
Caution
Do not use any hard, pointed or sharp-edged objects when cleaning the spray gun.
Any damage of the precision-made parts will certainly affect your spraying results.
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