Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-83
To remove the Einzel lens - Omega lens assembly, complete the following
steps:
1 Shut down the Agilent 7500.
See Chapter 3, “Startup, Shutdown and Status” in this manual.
2 Vent the analyzer vacuum and remove the vacuum cover.
See “Working Inside the Vacuum Chamber” earlier in this chapter.
3 Remove the Einzel lens - Omega lens assembly.
Wearing gloves, loosen the three screws (screw 1 and screw 2 in Figure 73)
in the lens base plate. Lift the lenses assembly to a higher place in a slanting
direction like the figure. Set down the Einzel lens assembly on a clean
surface. Place the cover on the vacuum chamber after the lens assembly has
been removed.
To remove the Plate Bias Lens, refer to “Removing Plate Bias Lens”.
WARNING
This procedure exposes you to the high voltages of the Agilent 7500, which can be
lethal. Shut the instrument down completely before proceeding.
CAUTION
Be careful not to bump into the electrode on the bottom when lifting the lenses
assembly.