INFICON Explorer Portable Gas Chromatograph - Manual (Page 251)

Explorer Operator Manual
249
Purging the Internal Carrier Gas Cylinder
NOTE: To avoid instrument contamination, do not allow the cylinder to empty completely.
If the internal cylinder has been empty for any period of time, it must be purged to
eliminate the possibility of system contamination. If you change carrier gas, you
must also flush and purge the internal tank with the new carrier gas.
WARNING
Do not purge the cylinder in hazardous locations.
1. Fill the internal cylinder with the carrier gas filling station as described in
Filling the Internal Cylinder on page 37.
2. Loosen the purge valve to empty the cylinder.
The purge valve is located below the carrier in port.
3. When the cylinder is empty, close the purge valve.
4. Fill the cylinder again.
5. Open the purge valve and empty the cylinder again.
6. Close the valve and fill the cylinder.
7. Run a sample of clean air to ensure no contamination has entered the system.
NOTE: Once you have filled the reservoir with carrier gas, you must allow the instrument to
purge for 3-4 hours, preferably overnight. This will flush the analytical engine with
the new carrier gas.