- This
graphic represents the functionality of the seal purge. The seal's
purpose is to separate the process chamber from the motor and
electronics in order to insure long, service-free operation.
We have had no failures as a result of process chamber flooding
since its implementation in January 2004.
- Its
second purpose is to operate the vacuum control valve and
many more available pneumatically controlled options now available.
click to enlarge
Note: This is an advanced functionality NOT
an unnecessary, wasteful extravagance which others would have
you believe! We are proud of the evolution of our product
and feel for most users this is a solution not a limitation. The
consumption of a few cubic liters of gas (typically N2,
Ar or Clean Dry Air) per hour is a small price
to pay to insure indefinite trouble-free operation. The purge
interlock is able to be discontinued after shipment with factory
instruction and acknowledgement of the responsibility.
Another alternative:
In those situation where a gas purge is not possible
our previously manufactured "A" model which uses an
electro-mechanical vacuum control valve is still available. see
What
happened to the "A" series? at the top of each model
page.
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