6996 0223 96 Issue A
© Edwards Limited 2016. All rights reserved. Page 31
Edwards and the Edwards logo are trademarks of Edwards Limited.
4 OPERATING INSTRUCTIONS
CAUTION
The operator must apply all relevant safety precautions. See section Safety precautions during operation.
4.1 Initial start-up
Note: The pump is supplied with oil in the gearbox.
Initial start-up instructions:
Remove the canopy panel(s) in order to get access to the internal components.
Check the process lines for the correct size to prevent high pressure drop and for cleanliness to
protect the pump.
Make sure the pump outlet is not obstructed.
Check that the electrical connections correspond to the applicable codes and that all wires are
clamped tight to their terminals. The installation must be earthed and protected against short
circuits by fuses of the inert type in all phases.
An isolating switch must be installed near the pump.
Check the oil level. The minimum level should reach the oil sight glass when the pump is stopped. If
needed, top up the oil.
Take care that no dirt drops into the oil system. Refit and tighten the filler plug.
Provide labels, warning the operator that:
The pump may automatically restart after voltage failure (if activated, consult Edwards).
The pump is automatically controlled and may be restarted automatically.
The pump may be remotely controlled.
Switch on the voltage and switch it off immediately. Check the rotation direction of drive motor
while the motor is coasting to a stop. The correct rotation direction of the drive motor is indicated
by an arrow shown on the motor fan cowl. If the rotation direction of the drive motor is incorrect,
open the isolating switch and reverse two incoming electric lines. Incorrect rotation direction of the
drive motor may cause damage to the pump.
Start and run the pump for a few minutes. Check that the pump operates normally.
Open the inlet isolation valve.
Reinstall the canopy panel(s).
Note: If you intend to apply the pump on humid applications, it is recommended that the unit is allowed
to achieve optimal running temperature before it effectively put in operation. This can be done by running
the unit against a closed suction line for 30 minutes.