Lubrication; Connect The Dry Pumping System To The Vacuum/Exhaust System - Edwards iXL600 Instruction Manual

A540-55-880 Issue D
3.2

Lubrication

The pumping system is given a charge of oil before leaving the factory. There is no requirement to check and adjust
the oil level.
3.3

Connect the dry pumping system to the vacuum/exhaust system

Pipe the exhaust to a suitable treatment plant to prevent the discharge of dangerous gases or
vapours to the surrounding atmosphere.
Do not touch the pump exhaust and check valve (if fitted) whilst the pump is running since the
temperatures of these parts can cause burns. These parts will remain hot after the pump has
stopped.
Do not operate the system with the exhaust pipeline blocked. If the exhaust pipeline is blocked,
the system can generate exhaust pipeline pressures of up to 3.5 bar (3.5 x 10
Use a catchpot to prevent the drainage of condensate back into the system. Condensate that drains back into
the system could damage the pump.
Do not reuse any O-ring or O-ring assembly and do not allow debris to get into the system during installation.
When connecting pumping system to the vacuum system, take note of the following:
To get the best pumping speed, ensure that the pipeline which connects the vacuum system to the pumping

system is the minimum length possible and has an internal diameter not less than the system inlet port.
Ensure that all components in the vacuum pipeline have a maximum pressure rating which is greater than the

highest pressure that can be generated in the system.
Incorporate flexible pipelines in the vacuum pipeline to reduce the transmission of vibration and to prevent

loading of coupling joints. Edwards recommends using Edwards braided flexible pipelines.
Adequately support vacuum/exhaust pipelines to prevent the transmission of stress to pipeline coupling

joints.
Incorporate a pressure gauge in the inlet pipeline to determine that the dry pumping system operates

correctly.
Ensure that the dry pumping system inlet can be isolated from the atmosphere and from the vacuum system

if pumping or producing corrosive chemicals.
The pump is fitted with an integral exhaust check valve which prevents the suck-back of exhaust vapours

after the pumping system is shut down.
1. Referring to Figure 8, remove the temporary cover or blanking plate from the inlet of the pumping system. Take
care not to drop screws, tools etc. into the pump inlet. Retain the nuts, bolts, washers and blanking plate for
future use. Retain the temporary cover for future use on non-contaminated pumps only.
2. Use the O-ring supplied and suitable nuts, bolts and washers (not supplied) to connect the inlet flange
(Figure 3, item 5) to the vacuum system. Refer to
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WARNING
WARNING
WARNING
CAUTION
Figure 8.
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Edwards and the Edwards logo are trademarks of Edwards Limited.
5
Pa).