Adjusting The Material Volume (Fig. 8); Setting The Amount Of Air (Fig. 9); Spray Technique - WAGNER W 687 E Manual Del Usuario

GB

Adjusting the Material Volume (Fig. 8)

Set the material volume by turning the regulator on the trigger guard of the spray gun.
- turn to the left
+ turn to the right 

Setting the Amount of Air (Fig. 9)

Depending on the viscosity of the material to be sprayed and the finish of the object to be
coated, it may be advisable to vary the amount of air. Very low viscosity materials, such as
watery glazes do not have to be atomised with the maximum amount of air. In this case it
is advisable to reduce the amount of air and thus minimize the spray vapour.
This also applies for the use of the low-scale and radiator/detail spray attachment
(accessory).
- turn to the right
+ turn to the left

Spray Technique

a) For low-viscosity coating substances
•
The spray result depends heavily on the smoothness and cleanliness of the surface to be
sprayed. Therefore the surface should be carefully prepared and kept free of dust.
•
Cover all surfaces not to be sprayed.
•
Cover screw threads or similar parts of the target object.
It is advisable to test the spray gun on cardboard or a similar surface to
i
find the correct setting.
Important: Begin spraying outside of the target area and avoid
interruptions inside the target area.
•
The spray movement should come from the arm, not just from the wrist. This ensures that
a uniform distance is maintained between the spray gun and the spray surface during the
spray operation. Select a distance of 5 - 15 cm, depending on the desired spray jet width.
Fig. 10 A CORRECT: Even distance to the object.
Fig. 10 C INCORRECT: Uneven distance causes uneven coating.
•
Move the spray gun evenly cross-wise or up-and-down, depending on the spray pattern
setting.
•
An even movement of the spray gun results in an even surface quality.
•
When coating material builds up on the nozzle and air cap (Fig. 10), clean both parts
with a solvent or water.
38
lower material volume

higher material volume
lower amount of air

higher amount of air

W 687 E