Works; Start-Up For Spraying Aircoat; Adjusting The Spray Pattern - WAGNER GM 4600AC Operating Instructions Manual

EDITION 02/2008
OPERATING MANUAL
5.4

WORKS

5.4.1

START-UP FOR SPRAYING AIRCOAT

1. Start up with material supply set to approx. 8 MPa; 80 bar; 1160 psi operating
pressure.
2. Spray (release trigger safety catch and pull trigger) and check the atomisation.
3. Set the fl uid pressure to the point where a further increase in fl uid pressure would
signifi cantly improve fl uid atomization.
4. Open air pressure controller for the atomizer air and adjust so as to achieve optimal
atomization. (The interrelation between spray pattern and atomizer air is shown in the
fi gure below).
5. Adjust the pressure to get the optimum spraying fi nish. Relation between spray pattern
and shaping air see illustration.
Note:
Repeat point 4 and 5 until the optimum spray pattern is reached (process iterative).
Spray pattern
No atomizing air
Note
The paint output volume can be changed by:
•
Changing the material pressure or
•
Fitting another fl at jet nozzle (see chap. 5.4.3 and chap. 9).
5.4.2

ADJUSTING THE SPRAY PATTERN

The spray pattern can be adjusted to suit the object being sprayed using the fan air regula-
tor. The illustration below shows the infl uence of the shaping air regulator on the spraying
pattern.
Other nozzle sizes can be used to obtain larger or smaller spraying patterns.
Shaping air
fully open
Part No. DOC394861
too little atomizing air
B_02262
GM 4600AC
B_00071
correct amount of air
Shaping air
fully closed
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