A705-61-880 Issue M
Page 4 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
The drive hub incorporates a number of drilled holes. With a coupling cover (12) removed, you can fit a steel rod (or
other suitable tool) to one of these holes, and you can then manually turn the drive shaft, and so turn the pump. This
facility is useful if, for example, you need to drain fluid from the pump following a hydraulic lock (see Table 16).
1.7 Liquid pumping capability
The GV pump can survive the ingress of some liquid (after a process failure condition, for example) without damage,
however the pump is not suitable for continuous pumping of liquids.
If you want to continuously pump a liquid stream, contact your supplier or Edwards for advice.
1.8 Safe area operation
You must not use the GV pump in the following hazardous areas:
Zone 0, Zone 1 or Zone 2 (gases), or Zone Z (10) or Zone Y (11) (dusts), as classified by European authorities.
Division 1 or Division 2 (gases and dusts), as classified by North American authorities.
These hazardous areas require the use of flameproof equipment. If you need a pump which can operate in these
areas, contact your supplier or Edwards for advice.
1.9 Accessories
A number of accessories are available for the GV pumps; use these to configure the pump for specific applications.
These accessories are listed in Section 7.4.
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