Gema OptiGun GA03-E, Operating Instructions And Spare Parts List

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V 02/22
12
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Product description OptiGun GA03-E
Principle of operation
High voltage generation
The control unit supplies a high-frequency low voltage signal of approx.
12 V eff. This voltage is fed through the gun cable (
11
) and the gun plug
to the high voltage cascade (
4
) in the gun body.
In the high voltage cascade (
4
), the low voltage is high-transformed in a
first step (
c
). This primary high voltage is subsequently rectified and mul-
tiplied in the high voltage cascade in a second step (
d
), until the required
high voltage is obtained at the end (approx. 100 kV). The high voltage is
now fed to the electrode (
e
) within the spray nozzle.
Fig. 4: High voltage generation
Circuit
The OptiGun Enamel automatic gun is switched on and off by the gun
control module.
The control unit allows also the adjustment of low voltage, powder flow
and electrode rinsing air to the gun.
Powder flow and electrode rinsing air
The electrode rinsing air is used by vented spray nozzles and is connect-
ed with its designated connection on the rear side of the gun control unit
(see the operating manual of the gun control unit).
The functions of the spray nozzles are described in the following sections.