80 5975/5977 Series MSD Operation Manual
3 Operating in Electron Ionization (EI) Mode
5 Press lightly on the metal box of the analyzer quad driver board to ensure a
correct seal.
6 Start the OpenLAB Data Acquisition program. If the MS was configured for
multiple ion source types, you are prompted for the ion source type that is
currently installed. Click on the installed source type if prompted.
7 If the selected ion source in the previous step does not match the source
used in the current method's tune file, you are prompted to enter a method
with the correct ion source type. Load the correct method for an EI, PCI, or
NCI source type.
8 Enable Tune Control and click Maintenance.
9 Click Pump Down to start this procedure.
CAUTION
Do not turn on any GC heated zones until carrier gas flow is on. Heating a column with
no carrier gas flow will damage the column.
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