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3.8
Connect the cooling-water supply
Refer to
Figure 4
and connect the cooling-water supply as described below. If you need to connect more than one
EDP pump to the water supply, you must connect them in parallel and not in series.
1. Remove the water inlet and outlet connectors from the fittings kit and fit them onto your cooling-water supply
and return pipes.
2. Remove the red blanking caps from the cooling-water inlet and outlet compression connections (5, 3) on the
services panel.
3. Fit the pipe fitting (6) on your cooling-water supply pipe to the water inlet compression connection (5) on the
water services panel, then tighten the connection.
4. Fit the pipe fitting (4) on your cooling-water return pipe to the water outlet compression connection (3) on the
services panel, then tighten the connection.
3.9
Connect the shaft-seals purge nitrogen supply
You must ensure that the gas supply to the shaft-seal purge cannot be interrupted during pump
operation. Refer to the ATEX manual (P600-60-200) for further details.
Your nitrogen supply pressure must comply with the requirements of
the shaft-seals purge pipelines may become over-pressurised and may explode.
Use a rigid metal (such as stainless steel) pipeline with an outside diameter of 1/4 inch for your nitrogen supply.
We recommend that you install an automatically operated isolation-valve in your nitrogen supply pipeline, configured
so that:
The shaft-seals purge nitrogen supply is on whenever the pump is on.
The shaft-seals purge nitrogen supply is off whenever the pump is off.
Refer to
Figure 4
and use the following procedure to connect your shaft-seals purge nitrogen supply:
1. Remove the mating connector from the fittings kit and fit it onto your nitrogen supply pipeline.
2. Remove the red blanking cap from the nitrogen inlet (7) on the services panel and fit the connector on your
nitrogen supply pipeline to the nitrogen inlet connector (7).
© Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
WARNING
WARNING
A705-40-880 Issue B
Section
2.6. If it does not,
Page 25
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