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4 Maintaining the MSD
To remove the calibration vial
To remove the calibration vial
Materials needed:
None
1 Stop any tuning or data acquisition.
2 Turn off the analyzer.
There are several ways to turn off the analyzer:
• In the Diagnostics/Vacuum Control view, select
MS OFF from the Diagnostics
menu.
• In the Instrument Control view in the Edit Parameters dialog box, select
MS OFF
from the Execute menu.
• In the Manual Tune view, select
MS OFF from the Execute menu.
• Type
MSOFF on the command line and press Enter.
• Verify that only the power LED is lit on the front of the MSD.
3 If your MSD is equipped with a gauge controller, switch off the triode
gauge and the gauge controller.
4 Remove the upper MSD cover (page 50).
5 Loosen the calibration vial collar by turning it counterclockwise.
Counterclockwise as viewed from the bottom (vial side) of the collar. Do not
remove the collar.
6 Pull the calibration vial out.
You may feel some resistance due to residual vacuum.
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