Agilent Technologies 7000 Series Operating Manual page 44

2 Installing 8890 GC Columns
To Install a Capillary Column in the GC/MS Interface Using a Standard Column Nut
9 Inspect the end for jagged edges or burrs. If the break is not clean and even,
10 Adjust the column so it extends this specified distance from the end of the
11 Tighten the nut 1/4 to 1/2 turn. Ensure the position of the column does not
12 Check the GC oven to be sure that the column does not touch the oven walls.
13 Check the nut's tightness after one or two heat cycles; retighten as
Use care when placing the tip seal on the end of the GC/MS interface to avoid
C AU T I O N
damaging the column.
14 Install the tip seal, spring, and knurled tip seal retainer on the GC/MS
Forcing the analyzer door closed if these parts are misaligned will damage the
C AU T I O N
tip seal or the interface or the ion source, or will keep the side plate from
sealing.
15 Gently check the alignment of the ion source and the interface tip seal. When
16 You can align the ion source and interface tip seal by wiggling the side plate
17 Close the front analyzer chamber. (See
44
repeat steps 6 and 7.
transfer line. (See Figure 4
For an EI XTR or CI Source Installation (See
column extends about 1 to 2 mm.
For an EI HES Installation (See
about 4 to 5 mm.

Use the flashlight and magnifying loupe if necessary to see the end of the
column inside the analyzer chamber. Do not use your finger to feel for the
column end.
change as you tighten the nut. Do not over tighten the nut.
appropriate.
interface. Align, gently slide, and screw the knurled tip seal retainer into the tip
seal holder. (See Figure 4
the ion source is aligned correctly, the front analyzer chamber can be closed
all the way with no resistance except the spring tension from the interface tip
seal.
on its hinge. If the door still will not close, contact your Agilent Technologies
service representative.
Chamber" on page 195.)
and Figure 5 on page 39.)
Figure 4
Figure 5 on page 39.), the column extends
and Figure 5 on page 39.)
"To Close the Front Analyzer
7000/7010 Series TQ GC/MS Operating Manual
on page 39.), the