Electrical Installation: Three-Phase Motors; Connect The Electrical Supply To The Motor; Motor Voltage Selection: Single-Phase Motors, 110/200-240 V 50 Hz And 115-120/200-240 V 60 Hz - Edwards A373-30-940 Instruction Manual

Rotary vacuum pumps
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A373-10-880 Issue R
Figure 7 - Motor voltage selection: single-phase motors, 110/200-240 V 50 Hz and 115-120/200-240 V 60 Hz
A. Top view of motor
B. Internal view of top of motor
C. On/off switch
3.7

Electrical installation: three-phase motors

3.7.1

Connect the electrical supply to the motor

Ensure that the electrical installation of the pump conforms with your local and national safety
requirements. It must be connected to a suitably fused and protected electrical supply and a
suitable earth (ground) point.
Ensure that the motor is correctly configured for your electrical supply voltage and frequency. If you do not,
you can damage the motor.
Note:
The pump will restart automatically when the electrical supply is restored after an interruption. If you do
not want the pump to restart automatically, use electrical control equipment which must be reset
manually.
Page 16
1. Terminal box cover
2. Electrical inlet socket
3. On/Off switch
4. Position 'I' (on)
5. Position 'O' (off)
6. Voltage selector switch
7. Position 'II' (high voltage setting 200 – 240 V)
8. Position 'I' (low voltage setting 110 – 120 V)
WARNING
CAUTION
© Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.

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