7 General Maintenance
To Replace the EM Horn
7000/7010 Series TQ GC/MS Operating Manual 201
To Replace the EM Horn
The replacement EM horn part number for this Series 2 detector is stamped on
the front face of the detector. Through MassHunter, you can determine which
series detector you have without having to directly check the detector. The
detector series is displayed as Triple Axis Series 2 in the detector tab of manual
tune, in the detector section on the second page of the tune report, and in the
pumpdown dialog.
Materials needed
• EM horn (Series 2 Detector G7002-80103)
• Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
• Pliers, long-nose (8710-1094)
Procedure
1 Vent the MS. (See“To Vent the MS” on page 124.)
2 Open the rear analyzer chamber. (See “To Open the Rear Analyzer
Chamber” on page 198.)
3 Slide the blue signal wire from the connector in the side plate. (See Figure 66
on page 202.)
4 Open the retaining clip. (See Figure 66 on page 202.) Lift the arm of the clip
up, and swing the clip away from the EM horn.
5 Remove the EM horn.
6 Hold the new horn with blue signal wire end down, and attach the signal wire
to the connector in the side plate. (See Figure 67 on page 202.)
7 Slide the EM horn into position.
8 Close the retaining clip.
The analyzer, GC/MS 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.
Always wear clean gloves to prevent contamination when working in the
analyzer chamber.
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