1 Installing the GC
Installation and First Startup 61
Step 24 Prepare for the Next Analysis
After evaluating the GC under the checkout conditions, installation checkout is complete. The
next step is to prepare the GC for your next analysis. Be sure to cool the GC before making
changes.
1 Cool all heated zones to < 40 °C, and set safe gas flows. Place the GC in maintenance
mode: Maintenance > Instrument > Perform Maintenance > Maintenance Mode > Start
Maintenance and wait for the GC to become ready.
2 Turn off the power by pressing the On/Off switch.
3 Shut off all gas valves at the gas source.
4 If you are using cryogenic cooling, shut off the cryo coolant valve at the source.
5 When the GC is cool, do the following:
• Install the appropriate inlet hardware (can include septum, liner, liner-O-ring, inlet gold
seal, inserts, and so on).
• Install the appropriate detector hardware (wavelength filter for FPD+, jet for FID or NPD).
• Change to any alternate gas sources as needed for the new analysis.
• Install the desired column and condition it per the manufacturer’s recommendations.
• Configure the GC to match any hardware or gas type changes (columns, liners, carrier or
makeup gas types, and so on).
• Load or create the desired method.
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