6 General Maintenance
To Remove the EI HES Filaments
5977C GC/MSD Operating Manual 165
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 109.)
2 Open the analyzer chamber. (See “To Open the Analyzer Chamber” on
page 149.)
3 Remove the ion source and place it on a clean cloth on your work surface.
(See “To Remove the EI HES” on page 151.)
4 Remove the screw securing the filament block to the source mount. (See
Figure 53.)
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 53 Replacing the dual filament
Source mount
Screw
Filament block
Dual filament
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