System Operation
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To maintain optimal performance it is recommended to change the purifier catalyst every three
years.
WARNING:
The final step (step 5 Cooling) of the regeneration process exposes the freshly-
regenerated purifier material to the Glovebox atmosphere. The Glovebox must contain less than
100 ppm oxygen prior to starting the regeneration.
A regeneration cycle comprises five steps as shown below
. The default times are
shown and are measured in minutes.
Figure 42 Regen Timers screen
5.9.1 Single-Column Purification System Regeneration Procedure
1
Connect a cylinder of regeneration gas (forming gas) to the regen gas connection on the rear
of the gas purification module. The regeneration gas must contain 3 to 7% hydrogen with the
balance being nitrogen or argon. Ensure that the connections are tightened correctly. Open
the regulator and set it to 7 psi.
2
Turn off the Blower on the Main screen. On a single column system this automatically closes
the purification column valves.
3
Press the START button.
4
Press the Yes button next to “Are the Column Valves Closed?” A “click” will be heard as the
solenoid valves open to allow regeneration gas to flow.
Note:
All column isolation valves have a yellow indicator tab. This yellow tab is not visible
when the valve is closed.
5
Adjust needle valve on the regeneration flow meter located on the front of the gas
purification module to set the flow to 25-30 scfh on the graduated scale on the flow meter.
6
Press
Yes
next to “Is Flow OK?”. At this point the regeneration gas will stop flowing. “Step
1. Heating” begins. The Regen Status displays as Heating and the timer begins to count up.
The Regeneration Status is also shown on the Main Screen.
7
The system automatically progresses through the regeneration steps 1 to 5. At the conclusion
of the regeneration sequence the blower automatically turns back on if this feature has been
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