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7. Repeat Step 5 again. If leaks persist, check the valve ports with a commercial gas leak
detector. Do not use a liquid leak detector such as Snoop
®
on the valves or
components in the oven.
3.6.2 Purging carrier gas lines
Purging carrier and calibration gas lines requires power and a PC connected to the GC.
Note
Tubing should be clean and dry internally. During installation, the tubing should have been blown
free of internal moisture, dust, or other contaminants.
To purge the carrier gas lines, do the following:
1. Ensure that the measure vent line plugs have been removed, and the vent lines are
open.
2. Ensure that the carrier gas bottle valve is open.
3. Set the “GC side” of the carrier gas to 120 psig.
4. Turn on the GC and the PC.
5. Start MON2020 and connect to the GC.
Note
Consult the MON2020 Software for Gas Chromatograph manual for information about
connecting to a GC.
6. Select Hardware → Heaters. The Heaters window displays. The temperature values for
the heaters should indicate that the unit is warming up.
The Heaters windowFigure 3-35:
7. Allow the GC system temperature to stabilize and the carrier gas lines to become
fully purged with carrier gas, which usually takes about an hour.
Installation and setup
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Installation and setup
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