Assembly; Operation - WALTHER PILOT Mini FB Instrucciones De Servicio

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Assembly

Note
Use the exploded view at the beginning of these operating instruction to perform the
operational steps described hereafter.
Warning
The air pressure at the gun shall not exceed 8 bar; otherwise a safe operation of the
spray gun cannot be ensured.
Warning
Material and air hoses which are installed with a hose grommet must be additionally
secured with a hose clamp.
Design version: gravity-feed cup
1. Connect the pressure-air hose between the air supply
system (cleaned pressure-air = air cleaner) and the
gun air inlet reducer (item 21).
2. Fill the gravity-feed cup with sieved material and
install the cup cover.
3. Turn the air supply on.
The gun is now ready for operation.
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 27) 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 reduction 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
Material flow
rate adjust-
ment
(needle range)
Flat-/
round-jet
adjustment
Atomizing air
Material
connection
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.
Caution
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.
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 5).
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 fol-
low 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.
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