Works; Start-Up For Spraying Aircoat; Adjusting The Spray Pattern - WAGNER GM 4700AC-H Translation Of The Original Operating Manual

VERSION 09/2011
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 locking device and pull trigger) and at the same time, check the atomization.
3. Set the fl uid pressure on the fl uid pump to the point where a good fl uid atomization is achieved.
4. Open the air pressure regulator for the atomizer air and adjust it so that an optimal atomization is
achieved. (The interrelation between spray pattern and atomizer air is shown in the fi gure below).
5. Use the shaping air controller on the gun to adjust the shaping air to atomizer air ratio, until the
optimal spray pattern is achieved.
Note:
Repeat points 4 and 5 until the optimum spray pattern has been found (iterative process).
Spray pattern shapes
No atomization air
Note:
The paint output volume can be changed by:
- changing the material pressure or
- Using a diff erent fl at jet nozzle (see chap. 5.4.3 and chap. 8).
5.4.2

ADJUSTING THE SPRAY PATTERN

The spray pattern can be adjusted to suit the object being sprayed using the shaping air regulator. 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
2311730
ORDER NUMBER DOC
Too little atomization air
B_02382
GM 4700AC
B_00071
Correct amount of atomization air
Shaping air
closed
21