A313-01-880 Issue A
Page 14 © Edwards Limited 2008. All rights reserved.
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Installation
3.2 System requirements
Consider the following points when you design your pumping system:
You must use a suitable backing pump: refer to Section 2.1, 2.2 and 2.3.
The HV pump must be mounted on a firm, level surface.
Vacuum pipelines must be adequately supported to stop the transmission of stress to pipeline joints.
You must limit the temperature of the inlet gas to that given in Ta ble 2.
If necessary, incorporate flexible pipelines in your system pipelines to reduce the transmission of vibration
and to prevent loading of the coupling joints. If you use flexible pipelines, you must ensure that you use
flexible pipelines which are suitable for vacuum operation and which have a maximum pressure rating which
is greater than the highest pressure that can be generated in your system.
The pump is noisy during operation (see Section 2.9). 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.
You must be able to purge with an inert gas when you shut down the pumping system to dilute dangerous
gases to safe concentrations. Consult Edwards or your supplier if you are in doubt.
If the HV pump is to be fitted in a new system, ensure that all preliminary pipelines have been installed and that a
suitable base for the HV pump has been prepared before you start installation.
Check that the following services and facilities are available for connection to the HV pump:
Cooling-water supply and return.
Electrical supply
Exhaust-extraction system.
Inlet-screen, refer to Section 1.5.
3.3 Unpack and inspect
1. Use a suitable fork-lift truck or pallet truck to move the pump, on its pallet, close to where you will install it.
2. Remove all packing materials.
3. Use suitable lifting-gear to remove the HV pump from its pallet:
On bareshaft HV pumps, attach the lifting-gear to the lifting eyes (Figure 2 item 6).
Note that after the HV pump has been fitted with a motor, the centre of mass is offset towards the motor.
You must fit additional support strap(s) to the motor to support it and prevent the pump from tilting when
you lift it.
Do not try to lift the HV pump by hand (see Section 2.5 for the mass of your pump).
Use suitable lifting equipment to move the pump. If you do not, you can injure yourself or damage
the pump. Refer to Section 2.5 for the mass of the pump.
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