32
33
Replacement of Air Cap -Component A
1. Unscrew the knurled sleeve nut (Item 1) from the front part (item 6).
2. Pull the air cap in (Item 2) of the front part.
3. Position the required air cap on the front part.
4. Screw the sleeve nut onto the front part.
Replacement of Air Cap -Component B
1. Unscrew the knurled sleeve nut (Item 33) from the gun body (item 40).
2. Pull the angular jet air cap (Item 34) with the counternut (item 35) and the inter-
mediate piece (item 36) of the gun body.
3. Unscrew the angular jet air cap with the counternut from the intermediate piece
and position the required air cap in the intermediate piece. Secured the required
position of the air cap with the counternut.
Installation of the remaining parts is performed in the reverse order.
Replacement of Material Nozzle and Needle -Component A
1. Remove the air cap (see
Replacement of Air Cap -Component A)
.
2. Unscrew the material nozzle (Item 3) from the front part.
3. Unscrew the cap (Item 29) from the threaded bush (Item 26).
4. Pull off the material needle (Item 27) from the piston casing (item 14).
5. Unscrew the material needle of the draw bar (Item 30).
Installation of the new nozzle insert assembly and the remaining parts is performed
in the reverse order.
Replacement of Material Nozzle and Needle -Component B
1. Remove the air cap (see
Replacement of Air Cap -Component B)
.
2. Unscrew the material nozzle (Item 37) from the gun body.
3. Remove the spring bushing (item 48) with the pressure spring (Item 47) from the
gun body.
4. Pull off the material needle (Item 44) with the counter piece (item 46) from the
gun body (item 40).
5. Unscrew the material needle of the counter piece.
Installation of the new nozzle insert assembly and the remaining parts is performed
in the reverse order. The distance between the tip of the material needle and the
counter piece is 70,5 m.
6
Cleaning
6.1
Safety Warnings
•
Prior to any servicing and repair work: Make sure that the spray gun is in unpres-
surized condition, i.e. all air and material inputs must be shut off - if not, immi-
nent risk of injury.
•
No open fires, naked light and smoking allowed in the work area. When spraying
readily flammable media such as cleaning solutions, there is an increased risk
of fire and explosion.
•
Observe the safety warnings issued by the manufacturer. Aggressive and cor-
rosive media represent risks and hazards to personal health.
6.2
Cleaning - Complete
Regular cleaning and lubrication of the spray gun has to be performed, in order to
increase the service life and the function of the spray gun.
Clean the gun only with cleaning solutions recommended by the manufacturer of the
spraying material used at the time. It is important to make sure that cleaning soluti-
ons do not contain any of the following 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 the electroplated components
resulting in corrosion damage.
WALTHER Spritz- und Lackiersysteme is not responsible for any damages resulting
from such treatment.
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. The functio-
nal reliability and efficiency of the gun can otherwise not be guaranteed.
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.
1. Dismantle the spray gun in accordance with
5.5 Replacement of Material Nozzle
and Needle.
2. Use a soft brush together with a compatible cleaning sulotion to clean the air cap
and nozzle.
3. Clean the remaining parts and the spray gun body with a suitable cloth and
cleaning solution.
4. Apply a thin film of the appropriate grease to the:
•
sealing collar of the piston
•
O-ring of the piston
•
material needle
•
needle spring
Make sure to use a non-acidic, non-resinogenic grease and a soft brush. The spray
gun is then reassembled in reverse order.
