Specifications

General Maintenance 4
5975 Series MSD Troubleshooting and Maintenance Manual 151
To replace the electron multiplier horn
Materials needed
• Electron multiplier horn (G3170-80103)
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
Procedure
1 Vent the MSD.
2 Open the analyzer chamber.
3 Open the retaining clip (Figure 26). Lift the arm of the clip up and then
swing the clip away from the electron multiplier horn.
4 Remove the electron multiplier horn.
5 Install the new electron multiplier horn.
6 Close the retaining clip.
The signal pin on the horn must rest on the outside of the loop in the
contact strip. Do not put the signal pin on the inside of the loop in the
contact strip. Incorrect installation will result in poor sensitivity or no
signal.
7 Close the analyzer chamber.
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