© Edwards Limited 2007. All rights reserved. Page 15
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Installation
B344-21-880 Issue N
3 Installation
3.1 Safety
z A suitably trained and supervised technician must install the pump.
z Isolate the other components in the vacuum system from the electrical supply before you start work.
z Use suitable lifting equipment when you move the pump.
z Ensure that the installation technician is familiar with the safety precautions which relate to the products
handled by the pumping system.
z Ensure that the products handled by the pumping system are compatible with the materials of construction
of the pump (see Section 2.3). If you have any doubts about the compatibility, contact your supplier or
Edwards for advice.
z Do not use solvents to clean ‘O’ rings.
3.2 Unpack and inspect
Remove all packing material and protective covers and check the pump. If the pump is damaged, notify your supplier
and the carrier in writing within three days; state the Item Number of the pump together with your order number
and your supplier’s invoice number. Retain all packing materials for inspection. Do not use the Diffstak if it is
damaged.
Check that your package contains a fitting-kit. This kit contains some of the components that you will need to install
your pump; refer to Figures 12 and 13. On P-model pumps, the pneumatic connectors are supplied fitted to the
connectors on the pump. If the fitting-kit or any other component is missing, notify your supplier in writing within
three days.
If the pump is not to be used immediately, refit the protective covers and store the pump in suitable conditions as
described in Section 6.1.
Diffstak 250/2000 pumps are tested with Santovac 5 before dispatch. All internal surfaces of the Diffstak 250/2000
pump will therefore be coated with a thin film of this fluid. You must clean the pump before you fill it with a fluid
other than Santovac 5 (see Section 3.9).
Obey the safety instructions given below and take note of appropriate precautions. If you do not,
you can cause injury to people and damage to equipment.
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