Labconco AtmosPure Re-Gen Gas Purifiers 5121845 - Manual (Page 30)

Chapter 4: Features and Safety Precautions
Product Service 1-800-522-7658 26
levels are 1 ppm for stainless steel, 2 ppm for FRP, and 5 ppm for
moisture.
7.) The vacuum pump outlet on the back is rated at 115V, 8A or
230V, 4.5A.
8.) Three solenoid valves control the regeneration of the copper catalyst
and molecular sieve. All are located on the back of the Gas Purifier for
easy connection to the 4% hydrogen/inert gas mixture, vacuum pump,
and vent exhaust. A flow control valve regulates the 4% hydrogen/inert
gas mixture between 10-25 CFH. Two 3/4" diameter isolation valves
are closed during the regeneration process, isolating the catalysts from
the glove box environment. After the 13 hour regeneration process is
complete, the isolation valves are slowly opened up to relieve the
vacuum in the column and return the Gas Purifier back to normal
circulation mode.
9.) Control Panel features include:
a.) Blower button controls the Gas Purifier blower between on, off,
and auto. In the ON position the blower runs continuously, OFF
shuts the blower off, and AUTO controls blower with pre-
programmed auto mode which can be adjusted using control
settings on the Labconco oxygen/moisture monitors. An accessory
Oxygen/Moisture Monitor Cable (9-pin) must be used to control
the Gas Purifier to high or low limit settings of the oxygen/
moisture monitors.
b.) Flashing indicator lights show proper positioning of the 3/4"
manually operated isolation valves.
c.) Start/Stop Regeneration button starts the programmed 13 hour
regeneration process. The isolation valves must be closed.
Indicator lights show each step of the regeneration process.
Once the regeneration process is complete, the red indicator
light will flash indicating successful program completion. The
Start/Stop button is pushed to end the process.
d.) The Vacuum Release button can be used to momentarily release the
vacuum in the purifier column after regeneration is complete.
However, Labconco recommends operators should release the
column vacuum through the glove box chamber by slowly opening
the isolation valves and allowing the auto pressure controller to
compensate for the vacuum with inert gas. Set the glove box main
chamber pressure between +1" w.g. to +4" w.g. for this preferred
method. This method is preferred because it maximizes the
capacity of the Gas Purifier and does not allow atmospheric air to
deplete the Gas Purifier column. Note: Atmospheric air contains
21% oxygen (210,000 ppm). 40% relative humidity air contains
11,250 ppm moisture.
e.) Main power switch turns the inlet power to the Gas Purifier on
and off.
10.) The optimized regeneration process is completed in 13 hours and
may be completed overnight while unattended.