7 General Maintenance
To Replace a Filament in an EI XTR, SS, or Inert Source
5977B Series MSD Operating Manual 215
To Replace a Filament in an EI XTR, SS, or
Inert Source
Materials needed
• Filament assembly (G7005-60061)
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Hex ball driver, 1.5-mm (8710-1570)
Procedure
1 Vent the MSD. (See “Venting the MSD” on page 116.)
2 Open the analyzer chamber. (See “To Open the Analyzer Chamber” on
page 176.)
3 Remove the ion source. (See “To Remove the EI XTR, SS, or Inert Source” on
page 196.)
4 Remove the gold plated screw and washer from the filament. (See Figure 69
on page 216.)
5 Slide the filament assembly off the ion source assembly.
The analyzer operates at high temperatures. Do not touch any part until you
are sure it is cool.