Labconco AtmosPure Re-Gen Gas Purifiers 5121845 - Manual (Page 8)

Chapter 1: Introduction
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Regeneration Control
Regeneration is controlled by a microprocessor which automatically
sequences the solenoid valves during the regeneration cycle. The
regeneration cycle restores the molecular sieve and copper catalyst. It is
programmed for the following time functions:

Initial 2 minute purge to allow adjustment of 4% hydrogen/inert gas
mixture flow rate to 10-25 CFH. (10 CFH Helium/4% Hydrogen, 20
CFH Nitrogen/4% Hydrogen, 25 CFH Argon/4% Hydrogen).

Heat cycle – 3 hours.

Purge cycle – 2 hour – 4% hydrogen/inert gas mixture flows through
purifier (heat also remains on).

Vacuum cycle – 8 hours minimum (continues until manually shut-off
and red LED flashes).
The control panel contains push button switches for automatic cycling (H
2
SET, HEAT, H
2
PURGE, VACUUM). The lighted display shows which
stage the regeneration process is in.
NOTE: Refer to Chapter 3, Chapter 4 and Chapter 5 for more detailed
descriptions of performance features, control functions, operating
instructions, and safety features.