Connecting A Replacement Gas Bottle - Micromeritics Gemini VII 2390a Operator's Manual

Gemini VII
2. Both gauges should read at or near zero. If not, open the regulator gas shut-off valve to release
gas. It is not necessary to disconnect the gas line from the regulator or the instrument.
3. Use an appropriate wrench to loosen the nut at the regulator/gas bottle connection then remove
the regulator from the bottle.
Regulator gas shut-
off valve
4. Replace the protective cap on the depleted bottle. Disconnect the retaining strap and remove the
bottle from its current location.

Connecting a Replacement Gas Bottle

Move the replacement bottle close to the instrument and tether it into place. It is not necessary to dis-
connect the gas line from the regulator or the instrument.
When connecting hazardous gases, ensure there is proper ventilation and always
follow the safety procedures established for your lab.
A power failure or loss of cryogen can result in dangerous pressures in the sample
tube. The analyzer uses pressure relief valves to vent this pressure into the instrument
cabinet and return the instrument to a safe condition. When using toxic or flammable
gases, additional venting of the cabinet may be required.
1. Use an appropriate cylinder wrench to remove the protective cap from the replacement bottle.
239-42828-01 - Dec 2012
Connecting Gases
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