Gema GG21, Operating Instructions And Spare Parts List

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Rev. 03 05/20
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Product description OptiStar 4.0 (CG21)
Adjustable operating mode (Program mode)
In this operating mode, 20 individually definable programs (P01-P20) are
available. These programs are automatically saved and can be recalled
again as the application requires.
fig. 9
The values for current, high voltage, powder output, total air and electrode
rinsing air can be set as needed for a given application.
The settings defined in the 20 programs and 3 application modes
are automatically stored, without confirmation!
Precise Control of spraying Current (PCC Mode)
For coating components with both complex and simple geometries, a
spraying current of below 10 µA can be selected to prevent unintended
overcoating on the simpler surfaces. This is especially important in
combination with high loading powders (such as metallic). The controller
automatically switches into "PCC mode". This allows for very fast yet
highly precise control. The high voltage and spray current values and their
symbols are depicted in red:
Fig. 10: PCC mode
Maximum coating performance (PowerBoost Mode)
For maximum coating performance, both the spray voltage and the spray
current can be set to a fixed value of 110 kV / 110 µA. This functionality is
particularly suitable for coating large-surface components with both
simple and complex geometries in combination with high powder output.
The control unit automatically switches to PowerBoost mode when the
spray voltage value above 100 kV is selected.
The high voltage and spray current values and their symbols are depicted
in red:
fig. 11: PowerBoost Mode