29
28
5.4
Replacing the component B
5.5
Replacing the material nozzle (component B)
1. Unscrew the protective plate (pos. 24.13) from the B-component.
2. Unscrew the material nozzle (pos. 24.1) and remove the O-ring (pos. 24.2).
Install the new material nozzle in reverse order.
5.6
Replacing the material needle (component B)
1. Unscrew the spring bushing (pos. 24.9) from the B-component.
2. Remove the spring (pos. 24.8) and pull the material needle (pos. 24.7) out of
the housing.
The installation is carried out with the material needle adjusted in reverse order.
Note
The setting dimension of the material needle is
19,8 mm
from the tip of the needle
to the needle chuck.
5.7
Replacing a leaking needle seal (component B)
1. Remove the material needle (pos. 24.7) as described in
5.6
.
2. Unscrew the packing screw (pos. 24.6) from the housing (pos. 24.3).
3. Remove the needle seal (pos. 24.4) from the housing using a hook.
4. The needle seal is installed in the housing using a special tool (pos. 25)
(art. no.:
V1182090000
).
5. Screw the packing screw (pos. 24.6) into the housing up to the stop and mount
the material needle (pos. 24.7) in reverse order as described in
5.6
.
Note
The seals must not be reused after removal and have to be replaced with new seals.
1. Remove the hose from the B component.
2. Unscrew the two hexagon socket screws
(pos. 21) from the pistol.
3. Unscrew the two nuts (pos. 24.10) from the
material needle (pos. 24.7).
4. Pull the B-component out of the holder on
the trigger (pos. 16).
5.8
Correcting spray pattern flaws
The following table shows the settings you can use to change the spray pattern.
Spray pattern test
Fault
Required adjustment
Spray pattern is split in the
centre
• setting a wider spray pattern
Spray pattern is too thick at
the ends
• Setting a more rounded spray
pattern
The spray pattern shows rath-
er large droplets
• Increase the nozzle air pressure
Material application in the cen-
tre of the spray pattern is very
thin
• Decrease the nozzle air pres-
sure
Spray pattern is split in the
centre
• Increase the nozzle diameter
• Reduce nozzle air pressure
• Increase material pressure
Spray pattern is very spherical • Reduce material pressure
• Increase nozzle air pressure
6
Cleaning
The spray gun must be regularly cleaned and lubricated in order to enhance its
service life and ensure the functionality of the spray gun.
Attention
Never place the spray gun in solvent or another cleaning agent. The perfect function
of the spray gun can otherwise not be guaranteed.
Attention
Do not use any hard or pointed objects for cleaning. Otherwise, precision parts of the
spray gun can be damaged and spraying results degraded.
Use only those cleaning materials for cleaning the spray gun which have been
prescribed by the manufacturer of the spraying material and which do not contain the
following components:
•
halogenated hydrocarbons (e.g. 1,1,1, trichloroethane, methylene chloride, etc.)
•
Acids or acidic cleaning agents
•
Solvents or cleaning thinners
•
Varnish removers.
The constituents named above cause chemical reactions on galvanised components
and lead to corrosion damage.
WALTHER Spritz- und Lackiersysteme GmbH will not honour warranty claims for
damages resulting from such treatment.
desired spray result
21
24.7
16
24.10
