© Edwards Limited 2010. All rights reserved. Page 15
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Installation
A726-01-880 Issue M
Ensure that the voltage shown on the voltage indicator (5) on the motor cover corresponds with your electrical supply
voltage. If it does not, you must change the configuration of the pump motor to match your supply voltage; use the
procedure below.
1. Undo the two screws (4) and lift off the voltage indicator moulding (2).
2. Rotate the voltage indicator moulding (2) so that the correct voltage is next to the arrow (5) on the terminal box
cover.
3. Replace the two screws (4).
3.6.2 Connect the pump to your electrical supply
Make the electrical connections to the pump motor with an IEC 320 cable socket (cold condition type) that satisfies
your local electrical standards. A range of suitable cables are available from your supplier or Edwards.
The pump must be connected to a suitable fused and protected electrical supply and a suitable earth point.
If your XDS pump was supplied with an electrical supply cable, the cable will be fitted with a moulded IEC connector
at one end. The other end of the cable may be fitted with a plug suitable for your local electrical supply. A cable
without a plug will contain wires colour coded as follows:
1. Ensure that the on/off switch on the motor is in the ‘off’ position.
2. Insert the moulded IEC connector at the end of the cable into the electrical inlet connector on the motor.
3. Connect the plug (if fitted) at the other end of the cable to your electrical supply. If a plug is not fitted, connect
the wires in the cable to the correct terminals of your electrical supply.
3.6.3 Check the direction of rotation
Ensure that the pump motor rotates in the correct direction. If it does not, turn the pump and your vacuum
system can become pressurised.
1. Remove the plastic cover over the screw in the centre of the motor back plate.
2. Use the on/off switch to switch on the electrical supply to the motor for a few seconds.
3. Check that the screw on the back of the motor rotates in the correct direction, shown by the arrow on the
motor. If the direction of rotation is incorrect, switch off the electrical supply immediately and contact your
supplier or Edwards for advice.
Ensure that the electrical installation of the XDS 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 point.
Table 7 - Wire colour codes
Convention Earth Neutral Live
Europe green and yellow blue brown
USA green white black
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