11 Configuration
Operation Manual 181
• Turns off the inlet heater.
• Sets the oven to a low temperature, < 50 °C, for fast cool down.
• Sets the column flow rate into the MS to as high a flow as you feel is appropriate and safe.
For turbo pumps, set the flow to 15 mL/min or to the maximum flow rate possible for the
column configuration (note that rates above 15 mL/min may not provide additional
benefits). For diffusion pumps, typically set the flow to 2 mL/min (never exceed 4 mL/min).
When you first configure a GC-MS system on an Agilent data system, you will be prompted to
create this method if it does not already exist.
You must create this method to use the MS’s fast venting feature.
To enable or disable MS communications
To temporarily disable GC-MS communications:
1 Select Settings > Configuration > Detectors.
2 Scroll until the Enable Communication checkbox is visible.
3 Select or deselect the checkbox next to Enable Communication to enable or disable
communication with the MS.
To use the GC when the MS is shut down
To use the GC while an MS is being repaired or maintained, do the following:
Be careful to avoid settings that send carrier gas into the MS, or which raise the temperature of
parts which might cause burns when working on the MS.
1 Disable MS communications. See “To enable or disable MS communications”.
2 If needed, completely uninstall the MS from the GC.
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