8CI Maintenance
To Switch from the CI Source to an EI XTR Source
7000/7010 Series TQ GC/MS Operating Manual 219
To Switch from the CI Source to an EI XTR
Source
Procedure
1 From the Tune and Vacuum Control view, vent the MS. (See “To Vent the
MS” on page 124.) The software will prompt you for the appropriate actions.
2 Open the analyzer. (See “To Open the Front Analyzer Chamber” on
page 156.)
3 Remove the CI source. (See to “To Remove the 7000 Series CI Source” on
page 220.)
4 Install the EI XTR source. (See “To Install the EI XTR Source” on page 187.)
5 Place the CI source in the ion source storage box.
6 If installing an EI SS or Inert source, remove the interface tip seal and put it in
the CI storage container.
7 Pumpdown the MS. (See “To Pumpdown the MS” on page 120.)
8 Load your EI tune file and Tune the MS.
Always wear clean gloves while touching the analyzer or any other parts that
go inside the analyzer chamber.
Electrostatic discharges to analyzer components are conducted to the side
board where they can damage sensitive components. Wear a grounded
antistatic wrist strap, and take other antistatic precautions before you open the
analyzer chamber. (See “Electrostatic discharge” on page 151.)
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