Labconco AtmosPure Re-Gen Gas Purifiers 5121845 - Manual (Page 39)

Chapter 6: Maintaining Your Gas Purifier
Product Service 1-800-522-7658 35
Recertification
Under normal operating conditions, the Gas Purifier and glove box system
should be recertified at the time of installation and at least annually
thereafter. The certifier should choose and perform one of the following
tests. Both tests validate the system Leak Test of the Gas Purifier connected
to the glove box.

Oxygen Method Leak Test per ISO 10648-2 test methods. See glove
box manual.

Pressure Change Leak Test per ISO 10648-2 test methods. See glove
box manual.
Solenoid Valve Replacement
1. Decontaminate the glove box interior and Gas Purifier, if required.
2. Wear appropriate protective equipment as determined by your Safety
Officer.
3. Turn the Gas Purifier and vacuum pump OFF. Close the manually
operated isolator valves.
4. Remove the solenoid valve. Refer to Figure 3-1 that shows the
solenoid valves.
5. Install the new solenoid valve.
6. Regenerate the catalysts and follow the 13 hour Regeneration listed in
Chapter 3.
7. Turn the glove box and Gas Purifier ON and re-certify.
Catalyst Replacement
1. The catalysts can become ineffective for a number of reasons as
described in Chapters 3-5.
2. Turn the unit off and remove the outer service panel. Loosen the
large nut near the heater terminal connections on top of the Gas
Purifier cylinder. Refer to Figure 4-1 and Figure A-1.
3. Remove the catalysts using a vacuum cleaner hose. Catalysts are
hazardous and need to be disposed of properly.
4. Fill the bottom with 4 pounds of molecular sieve, followed by 5
pounds of copper catalyst, and then followed by 1 pound of molecular
sieve on top.