7 General Maintenance
To Remove the EI HES filaments
192 5977B Series MSD Operating Manual
To Remove the EI HES filaments
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Cloths, clean (05980-60051)
• T6 Torx driver, (8710-2548)
Procedure
1 Vent the MSD. (See “To Vent the MSD” on page 136.)
2 Open the analyzer chamber. (See “To Open the Analyzer Chamber” on
page 176.)
3 Remove the ion source and place it on a clean cloth on your work surface.
(See “To Remove the EI HES” on page 178.)
4 Remove the screw securing the filament block to the source mount. (See
Figure 62.)
Always wear clean gloves to prevent contamination when working in the
analyzer chamber.
The analyzer, GC/MSD interface, and other components in the analyzer
chamber operate at very high temperatures. Do not touch any part until you
are sure it is cool.
Figure 62 Replacing the dual filament
Source mount
Screw
Filament block
Dual filament
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