Air Products GASGUARD TE10, Инструкция по установке, эксплуатации и обслуживанию

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GASGUARD
®
TE10 Distribution System Manual
Air Products and Chemicals, Inc. Page 3 - 6
3.4 Venturi Line
Air Products strongly recommends separate venturi supply source rather
than a houseline source.
Most process cylinder pressures are significantly higher than houseline operating
pressures. In the event of multiple failures of certain process panel components,
there is a remote possibility of back contamination of the houseline source
connected to the vacuum venturi.
Contact your Air Products representative for design details.
The venturi line requires 75-95 psig (5.2-6.6 barg) of nitrogen to adequately
produce the vacuum needed during purge cycles. The supply is usually taken from
a bulk liquid source, but it can also originate from a cylinder manifold system.
The vacuum generator will demand a flow of 50-60 LPM (106-127 CFH) of
nitrogen during purge cycles.
3.5 Purge Line
A purge line may be provided when the nitrogen purge cylinder is not included in
the source system. This purge line must be connected to a designated purge source
for the source system. The pressure required during cylinder purging is 80-90 psig
(5.5-6.2 barg). If an external purge source is used, sufficient over pressure
protection must be provided. Do not exceed the distribution system component
maximum allowable working pressure (MAWP) in the event of purge source
regulator failure.