128 5977 Series MSD Operation Manual
5 General Maintenance
To Remove the EI Ion Source
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Pliers, long-nose (8710-1094)
Procedure
1 Vent the MSD. See “To Vent the MSD” on page 76.
2 Open the analyzer chamber. See “To Open the Analyzer Chamber” on
page 78.
Make sure you use an antistatic wrist strap and take other antistatic
precautions before touching analyzer components.
3 If you are using a standard or inert EI ion source, disconnect the seven
wires from the ion source. Do not bend the wires any more than necessary
(See Figure 20 on page 130 and Table 22).
Table 22 Standard EI ion source wires
Wire color Connects to Number of leads
Blue Entrance lens 1
Orange Ion focus 1
White Filament 1 (top filament) 2
Red Repeller 1
Black Filament 2 (bottom filament) 2
CAUTION
Pull on the connectors, not on the wires.
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