4 Installing 7890 GC Columns
To Install the GC/MSD Interface Tip Seal
5977B Series MSD Operating Manual 93
To Install the GC/MSD Interface Tip Seal
Materials needed
• Interface tip seal (G3870-20542)
• Tip seal spring (G7005-20024)
• Knurled tip seal retainer (G3870-20547)
The interface tip seal must be in place for the CI source, the EI XTR source,
and HES. The interface tip seal, spring, and knurled tip seal retainer are not
used with EI SS or Inert source.
• Gloves, clean, lint-free
• Large 8650-0030
• Small 8650-0059
Procedure
1 Verify that the CI source, EI XTR source, and HES is installed. This tip seal and
its spring must not be installed when an EI SS or Inert source is installed. (See
Figure 22 on page 86.)
2 Remove the interface tip seal, spring, and knurled nut retainer from the ion
source storage box. In this order, slide the spring, tip seal, and knurled tip seal
retainer over the column sleeve.
3 Thread the knurled tip seal retainer into the tip seal base finger tight.
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.
Always wear clean gloves while handling any parts that go inside the GC or the
analyzer chambers.
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