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4
Installing 7890 GC Columns
To Install a Capillary Column in the GC/MS Interface Using the Self-Tightening Column Nut
84
7000/7010 Series TQ GC/MS Operating Manual
11
Hand-tighten the nut. (See
.) Ensure the position of the column
does not change as you tighten the nut.
12
Tighten the nut in the clockwise direction. Continue to tighten until you feel
the ferrule grip the column.
13
Check the GC oven to ensure that the column does not touch the oven walls.
14
Install the tip seal, spring, and knurled tip seal retainer on the GC/MS
interface. Align, gently slide, and screw the knurled tip seal retainer into the tip
seal holder. (See
and
Figure 22.
Installing a capillary column in the GC/MS interface
Self-tightening
column nut
GC/MS interface
GC inlet
Self-tightening
inlet nut
CAUTION
Use care when placing the tip seal on the end of the GC/MS interface to avoid
damaging the column.
CAUTION
Forcing the analyzer door closed if these parts are misaligned will damage the
tip seal or the interface or the ion source, or will keep the side plate from
sealing.