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INSTALLATION
A750-04-880 Issue F
3
INSTALLATION
3.1
Installation requirements
3.1.1
General requirements
The following requirements apply to all pumps:
The pump is supplied as a bare shaft pump. To operate the pump, you must fit a motor, or connect the pump
to a drive with the characteristics set out in
You must use a suitable transmission system between the drive and the pump, to ensure that radial loading
on the pump input shaft is kept to a minimum. The loadings must be less than the maximum radial loadings
given in
. The transmission system can take the form of a coupling or a belt drive.
If a sealing liquid and seals flush supply system is not already fitted, you must install the pump in one of the
system configurations specified in
The pump may be noisy during operation (see
). Where necessary, you must either install the
pump in an acoustic enclosure, or ensure that people wear suitable protective equipment (such as ear
defenders) when they are close to the operating pump.
3.1.2
ATEX specific requirements: ATEX Category 1, 2 and 3 pumps
ATEX Category 1, 2 and 3 pumps must be installed in accordance with the installation requirements set out in this
manual. This is essential for the ATEX Category 1, 2 or 3 certification to be valid. The following requirements must
be met:
The motor must comply with the requirements of the applicable ATEX Directives (94/9/EC and 99/92/EC) in
order for the external ATEX certification to apply.
The transmission system must comply with the requirements of the applicable ATEX Directives (94/9/EC and
99/92/EC) in order for the external ATEX certification to apply.
Your vacuum system design must ensure that the inlet of the pump is protected from the ingress of particles
larger than those specified in
. Unless your design ensures that such particle ingress cannot occur, use
upstream filters.
On ATEX Category 1 pumps configured for external seals flush supplies, you must ensure that the seals flush
supplies cannot be interrupted during pump operation, and configure your system to stop the pump in the
event of seals flush supply failure. You must therefore fit a flow switch in each of the seals flush supply
pipelines and a pressure switch in the seal flush supply manifold or a level switch if you are using a reservoir.
The flow switches must be high integrity devices and must be ‘fail to safety’ in accordance with Annex II
Section 1.5 of Directive 94/9/EC. You must connect the switches to an ATEX safety control circuit,
configured to stop the pump in the event of seals flush liquid supply failure.
On ATEX Category 2 pumps configured for external seals flush supplies, you must ensure that the seals flush
supplies cannot be interrupted during pump operation, and configure your system to stop the pump in the
event of seals flush supply failure. You must therefore fit a flow switch in each of the seals flush supply
pipelines. The flow switches must be high integrity devices and must be ‘fail to safety’ in accordance with
Annex II Section 1.5 of Directive 94/9/EC. You must connect the switches to an ATEX safety control circuit,
configured to stop the pump in the event of seals flush liquid supply failure.
The maximum loads and moments imposed by your system pipelines on the inlet and outlet connections must
not exceed those specified in
.
WARNING
The pump must be installed in accordance with the requirements detailed below.
