4
Connect supply lines
Note
Please refer to the explosion drawing (folded sheet) in the front of these operating
instructions to perform the work steps listed below.
Warning
The air pressure at the gun must range between
min. 2 bar
and
max. 6 bar
since proper functioning of the spray gun can otherwise not be ensu-
red.
Warning
Material and air hoses mounted on a hose nipple must be secured with a hose clamp
in addition.
Material supply through pressure tank
1. Attach the compressed air hose to the air line (cleaned compressed air)
and to the air connection of the spray gun (item 32).
2. Attach the material supply hoses to the material pressure tanks or material
pressure regulators of a pump system and to the material connections (item 4) of
the spray gun.
3. Fill the material into the material pressure tanks and close the lids.
4. Set the desired material pressures at the compressed air reducing valves; if the
material is supplied via pump systems, the material pressures are set at the
material pressure regulators.
5. Switch on the compressed air and set the desired spray air pressure
pressure reducing valve -
min. 2 bar
6. Open the material cocks at the pressure tanks.
7. To allow the air in the material hoses to escape, actuate the trigger level (item 30)
until uniform material jets exit the nozzles; the gun can now be closed again.
The gun is now ready to be operated.
5
Operation startup / Handling
The following requirements must have been met before you can operate the spray
gun:
• The spray air pressure must always first be available at the spray gun
• Only then may the material pressures be available at the spray gun
Attention
The material pressure may not be set higher than 2 bar since proper functioning of
the spray gun may otherwise not be ensured.
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 esca-
ping material.
Spray pattern test
A spray pattern test should always be generated when:
• the spray gun is used for the first time.
• the spray material is replaced.
• the gun has been disassembled for maintenance or repair.
The spray pattern test can be made on a sample work piece, sheet metal, cardbo-
ard or paper.
Changing the spray pattern:
You can change the spray pattern at the PILOT SIL by making the following
settings :
a) adjust the spray cone
The spray cone is adjusted by screwing the air cap (item 2) forward or backward.
Once the desired jet size has been set, the air cap is locked with the adjusting collar
(item 3).
b) adjust the material flow volume
The material flow volume depends on the nozzle diameter and the setting of the
material pressure at the pressure tank or material pressure regulator.
c) adjust the spray air
The spray air pressure is adjusted at the compressed air reduction valve of the com-
pressed air system. Please follow the directions and safety instructions of the manu-
facturer. If you want to change the spray pattern beyond the options already men-
tioned, the spray gun must be retrofitted. WALTHER offers a variety of different air
cap / material nozzle combinations.
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