7 General Maintenance
To Disassemble the EI XTR Source
168 7000/7010 Series TQ GC/MS Operating Manual
To Disassemble the EI XTR Source
Materials needed
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• Hex ball driver, 1.5 mm (8710-1570)
• Hex ball driver, 2.0 mm (8710-1804)
• Wrench, open-end, 10 mm (8710-2353)
• Nut driver, 5.5 mm (8710-1220)
• Tweezers (8710-2460)
Procedure
Refer to the exploded parts view and the EI XTR parts list while using this
procedure. (See Figure 53 and Table 16 on page 169.)
1 Remove the ion source. (See “To Remove the EI XTR Source” on page 162.)
2 Remove the filaments. (See “To Remove a Filament from the EI XTR
Source” on page 189.)
3 Separate the source heater assembly from the source body by removing the
two screws. The source heater assembly includes the source heater, repeller,
and related parts. (See Figure 53 and Table 16 on page 169.)
4 Disassemble the repeller assembly by removing the repeller nut, washers,
ceramic insulators and repeller. (See Figure 53 on page 169.)
5 Remove the setscrew securing the lenses to the source body.
6 Pull the lenses out of the source body and separate the lens insulator, ion
focus lens, extractor lens, extractor lens insulator, and extended entrance
lens. (See Figure 53 on page 169.)
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