Retooling The Spray Gun; Correction Of Spray Pattern Imperfections; Cleaning And Maintenance; Safety Instructions - WALTHER PILOT PILOT XIII Instructions D'utilisation

Adjusting the Material Pressure (Version for Material Connection)
The material pressure can only be adjusted at the pump or the pressure tank.Please
follow the operating instructions and safety instructions issued by the manufacturers.
Adjusting the Atomising Air Pressure
The atomising air pressure is adjusted at the air pressure reducing valve of the com-
pressor system. Please follow the operating instructions and safety instructions
issued by the manufacturers.
5.5

Retooling the Spray Gun

If a jet contour other than those already described is desired, the spray gun has to
be retooled.
WALTHER offers a wide range of combinations of air caps, material nozzles and
needles.
Air cap, material control 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
Air and material inputs must be shut off prior to retooling - risk of injury.
Note
Please refer to the exploded view at the beginning of this manual to perform the
steps detailed below.
Replacement of Material Nozzle and Air Cap
1. Unscrew the air control sleeve nut (Item 1).
2. Remove the air control head (Item 2).
3. Remove the material nozzle (Item 3) from the gun body, using wrench SW 12.
Reassembly is performed in reverse order.
Replacement of Material Needle
1. Unscrew the adjusting screw (Item 21).
2. Remove the spring (Item 23).
3. Remove the material needle (Item 18) from the gun body.
Reassembly is performed in reverse order. The distance between the tip of the
material needle and the driving sleeve (Item 19) should be 82 mm.
Only for the model PILOT XIII-D:
After the remove of the nozzle and air cap unscrew the material needle from the the
driving sleeve.
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5.6

Correction of Spray Pattern Imperfections

The following table shows how to correct a defective spray pattern.
Desired Spray Pattern
Spray pattern Fault
test
Swollen centre
Swollen ends
Coarse pearl effect
Unduly thin paint layer in
centre
Split centre
Spray pattern is very
spherical
6

Cleaning and Maintenance

6.1

Safety Instructions

• Prior to any service work atomising air as well as material feed to the spray gun
should be shut off - risk of injury.
• Open fires, naked lights and smoking are prohibited in the working area. There
is an increased risk of fire and explosion, when spraying readily flammable
media, such as cleaning solutions.
• Follow the safety instructions issued by the manufacturers of the cleaning
media. Aggressive and caustic cleaning agents in particular represent health
hazards.
6.2

General Cleaning Procedure

The spray gun should be frequently cleaned and lubricated to ensure reliable opera-
tion and long life.
Caution
Never immerse the spray gun in solvents or other cleaning fluids as this will impair
the functional reliability and efficiency of the gun.
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Necessary adjustment
• Spray jet should be flatter
• Spray jet should be rounder
• Increase atomising air pressure
• Decrease atomising air pressu-
re
• Increase nozzle diameter
• Reduce atomising air pressure
• Increase material pressure
• Reduce material pressure
• Increase nozzle air pressure