3.10 Connect the iH exhaust outlet to your exhaust-extraction system
WARNING
Pipe the exhaust to a suitable treatment plant to prevent the discharge of
dangerous gases or vapours to the surrounding atmosphere.
WARNING
Do not operate the iH system with the exhaust pipeline blocked. If the
exhaust pipeline is blocked, the iH system can generate exhaust pipeline
pressures up to 7 bar (7 x 10
5
Pa).
CAUTION
Use a catchpot to prevent the drainage of condensate back into the iH system. Condensate
which drains back into the iH system could damage the HCDP pump.
When you connect to your exhaust-extraction system, take note of the following:
•
Ensure that all components in the exhaust pipeline have a maximum pressure rating which is
greater than the highest pressure that can be generated in your system.
•
Incorporate flexible pipelines in the exhaust pipeline to reduce the transmission of vibration
and to prevent loading of coupling-joints. We recommend that you use BOC Edwards braided
flexible pipelines.
•
You must be able to isolate the exhaust-outlet from the atmosphere if you have pumped or
produced corrosive chemicals.
•
Adequately support exhaust pipelines to prevent the transmission of stress to pipeline
coupling-joints.
3-14 iH Dry Pumping Systems
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