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4
Supply line Connection
Warning
Air hoses which are installed with a hose grommet must be additonally secured
with a hose clamp.
Design: Gravity-feed cup
1.
Connect the air hose to the air pipe (cleaned
compressed air) or on an air cleaner and on the
air inlet of the spray gun.
2.
Fill the cup with screened material. Close the
cup.
3.
Switch on the pneumatic system.
The spray gun can be taken into operation.
Design: Material connection
1.
Connect the compressed air hose to the air line
(cleaned compressed air) or to an air cleaner and
to the compressed air connection (item 24) on
the spray gun.
2.
Connect the material feed hose to the material
pressure tank or the material pressure regulator of
a pumping system and to the material feed con-
nection (item 4) on the spray gun.
3.
Fill material into the material pressure tank and
close the cover.
4.
Set the desired material pressure on the com-
pressed air reducing valve; if the material is sup-
plied via pump systems, the material pressure is
set on the material pressure regulator by means of
an adjustment key.
5.
Open the material valve on the pressure tank.
6.
To allow the air in the material hose to escape,
operate the trigger, until a uniform material spray
exits the nozzle; the gun can now be closed again.
The gun is now ready to be operated.
5
Operational Handling
The following requirements must be met before the spray gun can be put into ope-
ration:
The material pressure may not be set higher than 8 bar. The air pressure must not
exceed 8 bar.
1.
Before using the gun, first carry out a spray pattern test. The spray pattern can
best be tested on a sample workpiece or on a sheet of metal, cardboard or
6.1
Correcting spray pattern flaws
desireable spray-painting result
Spray pattern test
Fault
Swollen centre
Swollen ends
Coarse pearl effect
Unduly thin paint
layer in centre
Split centre
Split centre
7
Troubleshooting and fault rectification
Warning
Prior to any seervicing and repair work: Make sure that the spray gun is in unpres-
surized condition, i.e. air input must be shut off - if not, imminent risk of injury.
Fault
Cause
Gun is dripping
Material needle or nozzle
soiled or damaged
Spring bushing (N° 18) tur-
ned too far to the back
Not enough material in mate-
rial tank
Cup is tilted too much during
Pulsating or unstea-
spraying operation
dy jet
Material nozzle loose or
damaged
Gun keeps blowing
Valve cone (N° 15) or
in off-position
valve stem (N° 14) damaged
Air connection
Material-
connection
Air connection
28
Necessary adjustment
• Spray jet should be flatter
• Spray jet should be rounder
• Increase atomising air pressure
• Decrease atomising air pressure
• Increase nozzle diameter
• Reduce atomising air pressure
• Increase material pressure
• Decrease material pressure
• Increase atomising air pressure
Remedy
• Clean or replace
• Adjust by turning clock-
wise
• Top-up material level
• Keep it level
• Fasten or replace
• Replace
30
paper.
2.
If necessary, adjust the settings of the spray gun.
Pay attention to the following safety warnings when using the spray gun!
•
Always wear proper respiratory protection masks and protective overalls when
using the spray gun. Airborne particles can damage your health!
•
Always wear suitable hearing protectors in the vicinity of the spray gun. The spray
guns produce sound levels of approximately 83 dB(A).
•
Ensure that the working area is absolutely free from open fires and naked lights
and that smoking is strictly prohibited. The spraying of flammable liquids (e.g.
paint) is accompanied by the risk of fire and explosion.
•
When spraying materials, keep hands and other parts of the body away from the
nozzle of the gun when it is under pressure. Risk of injury!
•
Relieve the spray gun of all pressures when work is complete. Lines left in a pres-
surised condition might burst and their contents may injure persons standing near-
by!
6
Spray pattern adjustments
The spray pattern of the PILOT Trend can be changed by adjusting the gun as follows:
Adjust the material pressure:
Material connection:
You can adjust the material pressure only on the pump or the pressure tank. Please
follow the directions and safety instructions of the manufacturer.
29
8
Conversion and repair
If a jet contour other than those already described is desired, the spray gun
has to be re-tooled. Air cap, material nozzle and needle packing together form a
unit - the nozzle insert assembly. Always change the complete insert assembly to
maintain the desired spray finish quality.
Warning
Prior to any repairs/replacements: Make sure that the spray gun is in unpressurized
condition, i.e. air must be shut off - if not, imminent Risk of Injury.
Note
In order to perform the following procedures, please refer to the exploded diagram
at the beginning of these operating instructions.
Replacement of the material nozzle and the air cap
1.
Unscrew the sleeve nut (N° 1).
2.
Remove the air cap (N° 2).
3.
Unscrew the nozzle (N° 4) (ws 12) from the gun body (N° 4).
When mounting the nozzle, the material needle should be in a flashed condition.
Reassemble in reverse order.
Replacement of the material needle
1.
Unscrew the spring bushing (N° 18).
2.
Remove the needle spring (N° 17).
3.
Pull the materialneedle (N° 16) out of the gun body.
Reassemble in reverse order.
For correct initial air adjustment the needle has to be set at 52.6 mm (Gravity-feed
cup) and 72,5 mm (Material Connection) measured from the tip to the driving gland.
Replacement of the needle seal
1.
Disassemble the needle as described above.
2.
Remove the needle packing gland (N° 6).
3.
Unscrew the lever shank screw (N° 19) and the lever screw (N° 21) and remo-
ve the trigger (N° 20).
4.
Remove the needle seal (N° 5) (Use a thin wire, one end of which is bent into
a hook, for this purpose).
Reassemble in reverse order.
Note
Never reinstall a used needle seal, as otherwise the functional sealing reliability of
the spray gun will not be guaranteed.
Note
All sliding and moveable parts (except the material needle!) must be lubricated with
a non-acidic, non-resinogenic grease prior to installation.
31
Round / Wide Jet adjustment
The adjusting screw is used to adjust the width of
the spray jet. The jet can be changed to a wide jet
by turning the screw anti-clockwise (screwing out)
and to a round jet by turning the screw clockwise
(screwing in).
Setting the Material Flow Rate
The material flow rate can be adjusted by screwing
the adjusting screw in or out. The flow rate is
increased by turning the screw anti-clockwise
(screwing out) and decreased by turning the screw
clockwise (screwing in).
Atomizing Air Flow Adjustments
The atomizing air input is regulated across the air
volume regulating control by adjusting knob 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!
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