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A705-40-880 Issue B
Page 20
© Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
8. Refer to
. Pour the coolant mix into the pump through the filler-tube (4) until coolant leaks from the
bleed-port in the heat exchanger, then apply a suitable thread sealant to the threads of the bleed plug (
item 21) and refit the bleed plug. If necessary repeat
to mix and add more coolant when you pour the
coolant mix into the pump.
9. Refer to
. Pour the coolant mix into the pump through the filler-tube (4) until the coolant level (6) is
approximately 25 mm below the bottom of the filler-neck (5). If necessary repeat
to mix and add
more coolant.
10. Refit the coolant filler-cap (1); press it down and turn it clockwise to secure it to the pump.
11. The coolant overflow pipe is coiled on the frame. Uncoil the coolant overflow pipe and route it to a suitable
receptacle or drain.
3.5
Check the gearbox oil-level
The pump is supplied filled with oil. Before you operate the pump, check that the gearbox oil-level is correct. Refer
to
for the locations of the two oil-level sight-glasses on the pump. The oil-level must be between the MIN
and MAX marks on the bezel of either of the two oil-level sight-glasses (see
, detail A). If necessary, pour
more oil into the gearbox: refer to
.
3.6
Electrical connections
3.6.1
Introduction
The installation of this equipment must be performed by skilled technicians who are familiar with this type of
industrial vacuum equipment.
Refer to your P&ID to determine which wiring configuration you have and where the interface points are.
Make the electrical connections to the pump as described in the respective manuals.
We recommend that you connect the electrical supply to the pump through a suitable current monitor, and that you
configure the high current setting on the current monitor to switch off the pump-motor at a suitable overload
current. This overload current must not exceed the maximum current rating shown on the rating plate on the pump-
motor.
WARNING
If your EDP pump is part of an ATEX system, refer to the ATEX System instruction manual before
you make any of the electrical connections. There may be additional electrical requirements
mandated by the ATEX Directive.