Operation; Retooling And Repairs - WALTHER PILOT PILOT Mini Instrucciones De Servicio

Design version: external material input
1. Connect the pressure-air hose between the
air supply system (cleaned pressure-air) and
the gun air inlet reducer (item 21).
2. Connect the material input hose between the
material pressure tank and/ or the material
pressure regulating control of a pumping
system and the material inlet (item 28) of the
gun.
3. Fill the material pressure tank with material
and close the lid.
4. Set the desired material pressure at the air
pressure reduction valve; if the material is
supplied via pump systems, the material
pressure is adjusted via the adjustment
wrench at the material pressure control.
5. Swith on the pneumatic system and set the
desired atomizing air pressure at the reduc-
tion valve.
6. Open the material tap at the pressure tank.
7. Pull the trigger (item 26) of the gun to
evacuate all air trapped inside the material
input hose. Wait until the material exits in an
even flow from the gun and shut the gun off.
The gun is now ready for operation.
5

Operation

The following requirements must be met before the spray gun is operated:
• The atomizing air pressure must be available at the gun
• The material pressure must be available at the gun.
Attention
The material pressure should not exceed
• 8 bar, since otherwise the operational reliability of the spray gun will be impaired.
Warning
It is important to remember to relieve the spray gun of all pressures when work is
terminated. Lines left under pressure may burst and the released material may cause
injuries.
Material
connection
Air connection
32
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 maintenance or repair works.
The spray pattern is best tested using a workpiece sample, a sheet of metal, card-
board or paper.
Spray Pattern Adjustment:
The spray pattern of the spray guns of model series PILOT Mini may be adjusted as
follows (look also at the figures of page 31 / 32).
a) Flat- or Round-Jet Adjustments
The spray-jet adjuster serves to change the spray pattern ratio from flat to round.
Flat-Jet Control (item 18):
• LH-turn (outwards) = flat,
• RH-turn (inwards) = round.
b) Material flow rate-Adjustments
The material flow is controlled across the needle adjusting screw (item 15).
LH-turn (outwards) = increase, RH-turn (inwards) = decrease.
c) Atomizing Air Adjustments
The atomizing air input is regulated across the air volume regulating control by
screwing (item 17) it inwards or outwards. The atomizing air pressure is to be set up
at the air pressure reducing valve of the compressor system - make sure to follow
relevant instructions and SAFETY warnings ! If any other changes of the spray
pattern those already described is desired, the spray gun has to be retooled.
WALTHER offers a wide range of combinations of air caps, material noozles and
needles.
6

Retooling and Repairs

Warning
Atomizing air as well as the material input must be shut off prior to retooling - risk of
injury.
Note
Please refer to the exploded view at the beginning of these operating instructions to
perform the steps detailed below.
Changing of Material Nozzle and Air Cap:
1. Remove the air cap (item 1) from the gun body (item 4).
2. Remove the material nozzle (Iitem 2) from the gun body using the Size „SW 7"
wrench.
Install the new material needle in reverse order.
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