7 CI Maintenance
204 5977B Series MSD Operating Manual
To Switch from the CI Source to the EI HES
Procedure
1 Vent the MS. (See “Venting the MSD” on page 91.) The software will
prompt you for the appropriate actions.
2 Open the left side access panel. (See “To Open the MSD Covers” on
page 112.)
3 Open the analyzer chamber door. (See “To Open the Analyzer Chamber” on
page 152.)
4 Remove the CI source. (See “To Remove the CI Source” on page 211.)
5 Place the CI source in the storage container.
6 Remove the CI source radiator. The Radiator should not be removed or
installed with the CI source in place. (See “To Remove the CI Source
Radiator” on page 206.)
7 Place the CI source radiator in the storage container.
8 Loosen the column nut and remove the column from the GC/MS Interface.
9 Cut the column on the tapered side of the ferrule to remove the ferrule.
10 Install the column into the GC/MS interface extending 4 to 5 mm past the
analyzer end of the transfer line. (See “To Install a Capillary Column in the
GC/MS Interface Using the Self-Tightening Column Nut” on page 42 or “To
Install a Capillary Column in the GC/MS Interface Using a Standard
Column Nut” on page 47.)
11 Remove the EI HES radiator from the storage container.
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 is a threat to MSD electronics” on page 21.)
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