Labconco AtmosPure Re-Gen Gas Purifiers 5121845 - Manual (Page 25)

Chapter 3: Getting Started
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Regeneration Steps:
Step 1 – Check to see that the 4% hydrogen/inert gas mixture tank valve is
open and its pressure regulator is set between 10-14 psi. At least ½ a tank of
4% hydrogen/inert gas must be available. Also, be sure that the vacuum
pump electrical power cord is plugged in.
Step 2 – Close both isolation valves.
CAUTION: Both isolation valves must remain closed until
the entire regeneration cycle is completed and vacuum is
released.
Step 3 – Push the automatic START/STOP button on the AtmosPure control
panel (see Figure 3-7) to begin automatic regeneration.
Step 4 – Adjust the Hydrogen Purge Flow Rate Knob to provide CFH
reading as specified on the back of the Gas Purifier and listed in this
instruction manual on the previous page. If proper flow cannot be set within
the two minute period, push Start/Stop switch to cancel program. Return to
Step 3 when you are ready. Regeneration will begin with the heat cycle after
the two minute flow adjustment period. After the 3 hour initial heat cycle,
the 2 hour H
2
purge cycle will begin automatically.
Step 5 – With the vacuum pump on and properly connected, the vacuum
pump will run for at least eight hours after completion of the heat and H
2
purge cycles.
Step 6 – After a minimum 8 hour vacuum cycle, push the START/STOP
button to end regeneration.
Step 7 – Turn off the vacuum pump then push the VAC. REL. button for one
second or less.
Note: An optional method releases the vacuum through the inert gas inside
the glove box and enhances oxygen removal capacity.
Step 8 – Optional – Do not push the VAC. REL. button. Instead partially
open both isolation valves. The isolation valves must be opened partially to
slowly replace the vacuum inside the Gas Purifier with inert gas from the
glove box. As the glove box pressure drops due to the Gas Purifier vacuum,
refill the glove box with inert gas from the inert gas tank directly or use the
Auto Pressure Control of the glove box. Hold the glove box pressure
between +1" w.g. to +4" w.g. Once the vacuum is fully released, open the
isolation valves 100%. This method fully preserves the regenerated copper
catalyst and molecular sieve.
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