Particulate Systems HPVA Series, Operator'S Manual, Page: 90 / 124

Connecting Gases HPVA Series Operator’s Manual
6-8 Mar 2011
Connecting a Replacement Gas Bottle
Move the replacement bottle close to the instrument and tether it into place.
A power failure or loss of cryogen can result in dangerous pressures in the sample
tube. The HPVA 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.
When connecting hazardous gases, be sure to vent properly and follow the safety
procedures established for your lab.
1. Use an appropriate cylinder wrench to remove the protective cap from the replacement bottle.
2. Attach the gas regulator to the connector on the gas bottle. Hand-tighten the nut, then use an
appropriate wrench to tighten an additional 3/4 turn.