Electrical Installation: Three-Phase Pumps; Check And Configure The Motor; Connect The Pump To Your Electrical Supply - Edwards RV3 Instruction Manual

A652–01–880 Issue S
3.8

Electrical installation: three-phase pumps

3.8.1

Check and configure the motor

Ensure that the motor is correctly configured for your electrical supply. If you operate the pump when the motor
is not correctly configured for the electrical supply, you will damage the motor.
1. Remove the screws which secure the cover of the motor terminal-box. Remove the cover.
2. Remove the cable-gland from the inside of the terminal-box and fit the cable-gland to the cable leadthrough
hole in the side of the terminal-box.
3. Ensure that the motor is correctly configured for your electrical supply. If necessary, reconfigure the links
(Figures 5 and 6, item 1) to suit your electrical supply:
For 200–230 V electrical supplies, the links must be configured as shown in
For 380–460 V electrical supplies, the links must be configured as shown in
3.8.2

Connect the pump to your electrical supply

Ensure that the electrical installation of the RV 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.
Notes: To prevent automatic restart of the pump-motor if the electrical supply is restored after an electrical
supply failure, connect the pump to the electrical supply through suitable control equipment which
must be reset manually after an electrical supply failure.
To maintain compliance with CSA (Canadian Standards Association) standards, you must incorporate a
switch or circuit breaker in the pump electrical supply. The switch or circuit breaker must be close to
the pump and easily accessible, and must be clearly marked to identify that it is the electrical supply
disconnection device for the pump.
We recommend that you connect the electrical supply to the motor through a starter or circuit breaker which has
thermal over-current protection which can be adjusted to suit the full load current ratings shown in
fuse ratings in Table 11 are provided for guidance only. The supplier of your thermal over-current protection device
may specify different values to ensure correct operation of the fuse and the over-current protection device. Ensure
that the fuse you use is suitable for the starting currents given in
1. Pass the electrical supply cable through the cable-gland. The diameter of the electrical supply cable should be
in the range 7 to 11 mm.
2. Use insulated crimped connectors to connect the wires in the cable to the terminals U1, V1 and W1 and Earth
(ground) in the terminal-box as shown in Figures
connection to a torque of 2.13 to 2.87 Nm.
3. Ensure that the cover gasket is correctly positioned, then refit the cover to the terminal-box and secure with the
screws. Tighten the strain-relief nut on the cable-gland.
Page 22
CAUTION
WARNING
Table 11.
5 and 6. You must tighten the earth (ground) terminal
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Figure 5.
Figure 6.
Table 11. The