Instruction book
74 6996 0227 40
Note
The complete electrical diagram can be found in the electrical cubicle.
Description
You find the correct position for the electrical connection on the Dimension drawings.
1. Provide an isolating switch.
2. Check that the motor cables and wires inside the electric cabinet are clamped tight to their
terminals.
3. Check the fuses. See section Electric cable size and fuses.
4. Connect the power supply cables to terminals (1, 3 and 5).
5. Connect the earth conductor to the earth bolt (PE).
To preserve the protection degree of the electric cubicle and to protect its components from
dust from the environment, it is mandatory to use a proper cable gland when connecting the
supply cable to the vacuum pump.
380V or 460V supply:
Mount the transformer bridge on the primary winding side of the transformer, mounted inside the electrical
cubicle, according to the scheme indicated on the transformer (also shown here) for the applicable supply
voltage. GHS pumps leave the factory with 400V supply voltage setting.
Vacuum pump control modes
See also section Control mode selection.
The following control modes can be selected:
Local control: The vacuum pump will react to commands entered by means of the buttons on the
control panel. Vacuum pump start/stop commands via Clock function are active, if programmed.
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