5 General Maintenance
158 5975/5977 Series MSD Operating Manual
5 Secure the new filaments with the gold plated screw and washer. (See
Figure 49 on page 157.)
6 After installing the filament, verify that it is not grounded to the source body.
7 Install the EI source. (See “To Install the EI XTR, SS, or Inert Source” on
page 159.)
8 Close the analyzer chamber. (See “To Close the Analyzer Chamber” on
page 162.)
9 Pumpdown the MSD. (See “To Pump Down the MS” on page 106.)
10 Autotune the MSD. (See “To Run an Autotune” on page 102.)
11 In the Manual Tune dialog, the Filament parameter allows you to enter 1 or 2
for the filament number. Whichever number was present during the previous
autotune enter the other filament number.
12 Autotune the MSD again.
13 Enter the filament number that gave the best results.
If you decide to use the first filament number, run Autotune again to make
sure the tune parameters are compatible with the filament.
14 Select Save Tune Parameters from the File menu.
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