Walther PILOT WA XV Instructions De Service page 19

of the remaining parts in reverse order.
WA XV needle-pull / WA XV-ND:
Installation of the new nozzle insert
assembly and of the remaining parts
in reverse order.
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7. Remove the compression spring
gun body.
8. Remove the piston very carefully from the
gun body (use a suitable pair of pliers).
9. Remove the piston end nute from the control
piston (use Size 13 mm and 22 mm wren-
ches). The material needle is now freely
accessible and can be pulled out.
10. Unscrew the two needle retaining nuts
Installation of the new nozzle insert assembly and
1. Remove all pressures from the gun (see 5.2
Starting / Stopping Requirements).
2. Remove the air control head (see 5.5
Replacement of Air Cap).
3. Unscrew the material nozzle from the gun
front attachment (12 mm wrench).
4. Remove the cap screw and pull the washer
off.
5. Remove the material input regulating screw.
6. Pull the needle spring out.
7. Pull the stop piston plus material needle
out.
8. Unscrew the material needle from the stop
pin .
6
from the
6.1
• Prior to any servicing and repair work: Make sure that the spray gun is in unpres-
surised condition, i.e. all air and material inputs must be shut off - if not, imminent
Risk of Injury .
• No open fires and naked lights as well as smoking are allowed in the work area.
This is a major requirement to prevent the euer present risk of fire and explosion,
particularly when spraying readily flammable media such as, for example
cleaning solutions, etc.
• It is important that all processing specifications and safety warnings issued by
.
the manufacturer of cleaning media are duly complied with. Remember:
Aggressive and corrosive media represents risks and hazards to personal health.
6.2
The spray gun should be frequently cleaned and lubricated so as to ensure a long
service life and functional reliability. Cleaning of the gun only with cleaning soluti-
ons recommended by the manufacturer of the spraying material used at the time.
It is im-portant to make sure that cleaning solutions do not contain any of the follo-
wing constituents:
• halogenated hydrocarbons (e.g. 1,1,1-trichloroethane; methylene chloride, etc.)
• acids and acidiferous cleaning solutions
• regenerated solvents (so-called cleaning dilutions)
• paint removers
The above constituents cause chemical reactions with electroplated components
resulting in corrosion damage.
WALTHER PILOT is not liable for any damages resulting from improper treatement
of the gun.
Clean the spray gun
• prior to each change of the spraying medium.
• at least once a week.
• as often as may be required by the spraying medium handled and the resultant
degree of fouling.
Caution
Never immerse the spray gun in solvent or any other cleaning solution as such
measure is highly likely to affect the functional reliability and efficiency of the gun.
Caution
Do not use any hard, pointed or sharp-edged objects when cleaning the spray
gun. Any damage of the precision-made parts are likely to affect your spraying
results..
Cleaning and Maintenance
Safety Instructions
Cleaning - Complete
11