Particulate Systems HPVA Series, Operator'S Manual, Page: 89 / 124

HPVA Series Operator’s Manual Connecting Gases
Mar 2011 6-7
Required Items.
Particulate Systems Supplied User Supplied
Stainless steel gas tubing
Two 7/16-in. wrenches Analysis gas (recommended purity 99.999%)
Helium (recommended purity 99.999%)
Clean compressed air and air line
Regulators for gas bottles
Disconnecting the Depleted Bottle
1. Close the gas bottle shut-off valve, then open the regulator shut-off valve.
Gas Bottle
shut-off valve
Regulator
shut-off
valve
2. Both gauges should read at or near zero; if not, open the gas inlet valve (3) and the vent valve (2)
and allow the pressure to purge from the lines.
3. Use an appropriate wrench to loosen the nut at the regulator/gas bottle connection, then remove the
regulator from the bottle.
You do not have to disconnect the gas line from the regulator or the instrument.
4. Replace the protective cap on the depleted bottle, disconnect the retaining strap, and remove the
bottle from its current location.