Electrical Installation: Single-Phase Pumps; Check And Configure The Motor; Connect The Pump To The Electrical Supply; Check The Direction Of Rotation - Edwards RV3 Instruction Manual

3.6

Electrical installation: single-phase pumps

3.6.1

Check and configure the motor

Ensure that the motor is correctly configured for the local electrical supply. If the pump is operated when the
motor is not correctly configured for the electrical supply, the motor will be damaged.
Refer to Figure 4 for the item numbers in brackets.
Ensure that the voltage shown on the voltage selector switch (3) in the motor-cover corresponds with the local
electrical supply voltage. If it does not, change the configuration of the pump-motor to match the local electrical
supply voltage; use the following procedure.
1. Undo the two retaining screws (6) securing the voltage selector switch cover (5).
2. Remove the voltage selector switch cover (5) and toggle the voltage selector switch (3) into the alternate
position.
3. Invert the voltage selector switch cover (5) and refit over the voltage selector switch (3).
4. Refit the two retaining screws (6).
3.6.2

Connect the pump to the electrical supply

Ensure that the electrical installation of the RV pump conforms with local and national safety
requirements. The pump must be connected to a suitably fused and protected electrical supply
with a suitable earth point. For recommended cord sets refer to Section 2.4.
Note: 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.
1. Ensure that the on/off switch on the motor
2. Insert the moulded IEC connector at the end of the cable into the electrical inlet-connector on the motor
(Figure 4, item 2).
3. Connect the plug (if fitted) at the other end of the cable to the electrical supply. If a plug is not fitted, connect
the wires in the cable to the correct terminals of the electrical supply.
3.6.3

Check the direction of rotation

Ensure that the pump-motor rotates in the correct direction. If it does not, the pump and the vacuum system
can become pressurised.
Refer to Figure 1 for the item numbers in brackets.
1. Watch the motor cooling-fan through the motor fan-cover (13).
2. Use the on/off switch (12) to switch-on the electrical supply to the motor for a few seconds.
3. Check that the motor cooling-fan rotates in the correct direction (14) shown by the arrow on the motor
fan-cover. If the direction of rotation is incorrect, switch off the electrical supply immediately and contact the
supplier or Edwards for advice.
© Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
CAUTION
WARNING
(Figure 4, item 4) is in the 'off' position.
CAUTION
A652–01–880 Issue Y
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