Agilent Technologies 5975C TAD VL MSD, Troubleshooting And Maintenance Manual

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144 5975 Series MSD Troubleshooting and Maintenance Manual
4
General Maintenance
To reinstall a filament
Materials needed
•
Filament assembly (G2590-60053)
•
Gloves, clean, lint-free
•
Large (8650-0030)
•
Small (8650-0029)
•
Hex ball driver, 1.5 mm (8710-1570)
Procedure
1
Install the new filament ( Figure 23 ).
2
Remove the screw holding the filament to the ion source body.
3
Slide off the filament assembly.
4
Orient the assembly so that the filament is next to the ion source body.
5
Replace the screw to the ion source body.
6
After installing the filament, verify that it is not grounded to source body.
7
Reinstall the ion source. See the Operation Manual .
8
Close the analyzer chamber.
9
Pump down the MSD.
10
Autotune the MSD.
11
In the Edit Parameters dialog box (Instrument/Edit MS Tune Parameters),
select the other filament.
12
Autotune the MSD again.
13
Select and use the filament that gives the best results.
If you decide to use the first filament, 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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