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To use MassLynx software to prepare the instrument for working on its inner and
outer sources:
1.
In the MassLynx main window, click MS Tune
2.
On the Tune window's Source tab, click Turn Off Filament.
3.
In the Tune window, click Operate
Note:
When the instrument is in Standby mode, the collision gas and the CI gas, if used,
are turned off.
4.
Manually close the gas valve to isolate the carrier gas flowing into the GC oven.
5.
In the Tune window, click Vacuum > Vent to vent the instrument.
6.
On the Tune window's Diagnostics tab, observe the Turbo Speed reading and wait for it to
reach 0%.
Note:
If the Diagnostics tab is not visible, click View > Diagnostics.
7.
Once sufficient time has passed for the enclosure components to cool, open the source
enclosure door on the front of the instrument.
4.5 Preparing the GC oven for working on the capillary
column
To prepare the GC oven for working on the capillary column, see the documentation that
accompanied the GC oven and follow the instructions.
4.6 Removing and refitting the source components
Always follow Good Laboratory Practice (GLP), and consult your organization's standard
operating procedures as well as your local requirements for safety.
Before performing certain maintenance procedures or fitting the optional sources to the
instrument, you must remove the source components currently fitted to the instrument.
Remove the inner source assembly to do any of the following:
• Clean the repeller and the ionization chamber fitted within the inner source
• Replace a filament
• Change between EI and CI modes of operation
• Gain access to the outer source
• Replace the column
April 27, 2020, 715005564 Ver. 01 (previously released as Rev. A)
.
to put the instrument in Standby mode.
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