Check The Direction Of Rotation - Edwards RV3 Instruction Manual

A652–01–880 Issue S
If your RV 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
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 your electrical supply. If a plug is not fitted, connect
the wires in the cable to the correct terminals of your electrical supply.
3.7.3

Check the direction of rotation

Ensure that the pump-motor rotates in the correct direction. If it does not, the pump and your 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 your
supplier or Edwards for advice.
Page 20
Colour
Green and yellow
Blue
Brown
(Figure
CAUTION
Edwards and the Edwards logo are trade marks of Edwards Limited.
Use
Earth (ground)
Neutral
Live
4, item 5) is in the 'off' position.
© Edwards Limited 2007. All rights reserved.