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W 687 E
Three dierent spray jet settings can be chosen on the spray gun, depending on
the application and target object.
Selecting the Spray Setting
Fig. 6 A = horizontal at jet for horizontal surfaces
Fig. 6 B = vertical at jet for vertical surfaces
Fig. 6 C = circular jet for corners, edges and hard-to-reach surfaces
Adjusting the desired Spray Setting (Fig. 7)
With the union nut (1) slightly unscrewed, turn the air cap (2) to the desired spraysetting
position (arrow). Then tighten the union nut.
WARNING! Danger of injury! Never pull the trigger guard while adjusting
the air cap.
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 lower material volume
+ turn to the right higher material volume
Setting the Amount of Air (Fig. 9)
Depending on the viscosity of the material to be sprayed and the nish 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 lower amount of air
+ turn to the left higher amount of air
Spray Technique
a) For low-viscosity coating substances
The spray result depends heavily on the smoothness and cleanliness of the surface to be
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sprayed. Therefore the surface should be carefully prepared and kept free of dust.
Cover all surfaces not to be sprayed.
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Cover screw threads or similar parts of the target object.
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It is advisable to test the spray gun on cardboard or a similar surface to
nd 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
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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.