Operation Start-Up And Shut-Down; Spray Pattern Adjustments; Correcting Spray Pattern Flaws - SIMALFA Primus Instrucciones De Servicio

Warning
When connecting to the customer provided air supply the air connection screw
(item 35) must be secured against rotation with a size 17 open-end wrench.
5 Operation
5.1 Start-up and shut-down
The following requirements must have been met before you can operate the spray
gun:
• The spray air pressure must be applied at the spray gun.
• The material pressure must be applied at the spray gun or the free flowing
system container must be filled with material.
Attention
The material pressure may not be set higher than 8 bar. The air pressure may not
exceed 8 bar. Working pressure ca. 2 bar.
Warning
Always relieve the pressure from the spray gun after work is completed. The pres-
surized lines may rupture and persons standing nearby may be injured by the
escaping material.
Note
The gun must be flushed before use to prevent contamination of the spraying mate-
rial.
6

Spray pattern adjustments

You can change the spray pattern on the SIMALFA Primus by making the following
settings:
Adjusting wide or round spray:
The regulating screw is used to regulate the spraying
width. By turning it to the left (unscrewing), the spray
becomes wide, by turning it to the right (screwing down)
it becomes round.
Adjusting the material flow volume:
The material volume can be regulated by turning the
adjusting screw in or out. The material volume is
increased by turning it to the left (unscrewing) and
reduced by turning it to the right (screwing down).
Adjusting the air volume:
The spray air volume can be regulated by turning the
Material
adjusting screw in or out.
connection
Air connection
28
Adjust the material pressure:
Material pressure can be regulated by changing the height of the Clip-on adhesive
container.
6.1

Correcting spray pattern flaws

The following table shows the settings you can use to change the spray pattern.
Spray pattern test Deviation
Spray pattern is split in
the centre
Spray pattern is too thick
at the ends
The spray pattern shows
rather large droplets
Material application in
the centre of the spray
pattern is very thin
Spray pattern is split in
the centre
Spray pattern is very
elliptical
29
Desired Spray Pattern
Required adjustment
• setting a wider spray pattern
• Setting a more rounded
spray pattern
• Increase the nozzle air pres-
sure
• Decrease the nozzle air
pressure
• Increase the nozzle diameter
• Reduce nozzle air pressure
• Increase material pressure
• Reduce material pressure
• Increase nozzle air pressure