Gas Purges; Connect The Electrical Supply To The Dry Pumping System - Edwards iXL120N Instruction Manual

3.7.2

Gas purges

The iXL120 and iXL120N pumps are not suitable for use with hazardous production materials. Any
hazardous production materials must be diluted to a safe level before entering the pump.
Gas purge is provided for the sole purpose of enabling the pumping of inert light gases such as helium.
3.8

Connect the electrical supply to the dry pumping system

Ensure that the electrical installation of the pumping system 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.
This equipment is suitable for Installation Category II as defined in IEC 60664-1. The dry pumping
system must be connected to an isolator that disconnects all current carrying conductors and can
be locked in the off position. The isolator must be in close proximity to the equipment, within easy
reach of the operator and identified as the disconnect device for the equipment.
The equipment must be permanently Earthed. A second protective Earth (ground) conductor, with
a cross-sectional area at least equal to the phase conductor size, must be connected to the
protective Earth (ground) stud.
Ensure that the system and your electrical supply cable are suitably protected against Earth
(ground) faults and that the Earth (ground) conductor of the electrical supply cable is longer than
the phase conductors in the connector.
All connections to the interface control must be double insulated or have equivalent protection.
Do not connect voltages greater than 30 V a.c. or 60 V d.c. to the control/interface connections.
If you do, the interface control will not provide protection against electric shock.
The power wiring must be protected, refer to
The main power connector is not approved for connection and disconnection under load.
© Edwards Limited 2010. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Table 8 for requirements.
WARNING
A541-11-880 Issue A
Page 19