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riioWAROS
A419-00-880 Issue K
3.4
Connect the inlet to the process system
WARNING
Install the pump
in the
vacuum
system
before
connecting the pump to
the
electrical
supply.
If not,
the pump may operate
during installation
and
cause
injury
to
people and
damage to
the
surrounding
equipment.
WARNING
Do not remove
the
Inlet
screen
from the pump. Do not
operate the
pump
with the
Inlet exposed.
WARNING
The pump must be
able to
be isolated from the atmosphere and process
system
if
dangerous
substances
have been
pumped
or produced.
When connecting the pump to the process system:
CAUTION
The
vacuum system and
foreline assembly
MUST NOT
be
supported
by the EPX Pump. The
foreline
assembly
should
be
supported
by
the vacuum system
and
connected to the
EPX pump
inlet by
a flexible connection
to
reduce vibration
and
stress in the system pipelines.
CAUTION
Use a flexible
connection in the
pipeline from
the
process
system
to the
pump to reduce vibration and stress in
the
system
pipelines.
•
To get the best pumping
speed,
ensure that the pipeline which connects the process system to the pump is
as
short as possible and has an internal diameter not less than the pump inlet.
•
Do not allow debris to get into the pump during installation.
Ensure
that debris (such as weld slag) cannot get
into the pump during operation.
•
If
necessary,
contact
Edwards
or the supplier for
advice
on inlet isolation valves or
other
components suitable
for the application and system design.
The
EPX180
and
EPXSOO
pumps are supplied with a clear plastic protective cap on the inlet flange. The cap prevents
debris entering the pump during transit and protects the inlet flange
from
scratches.
The plastic cap
must
be removed prior to installation and operation of the pump.
Connect the inlet
flange
to
a
foreline or
inlet
reducing
adapter,
using
an
Edwards centring
0-ring and claw clamps
(Refer to
Section 2.1
for
details of fittings).
A centring 0-ring must be used to seal the inlet flange
and
retain the inlet screen.
©
Edwards Limited 2017. All rights reserved.
Page 29
Edwards and the Edwards
logo
are trademarks of Edwards Limited.
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