Agilent Technologies agilent 7683B, Installation, Operation And Maintenance Manual

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Maintenance
8
Installation, Operation, and Maintenance 139
Part 3, Maintenance and Troubleshooting
Adapting For Cool On-Column Injection
The 7683B injectors can inject samples directly onto 250-
µ
m, 320-
µ
m, and
530-
µ
m columns in GCs with a cool-on-column inlet.
To adapt the injector and GC for cool on-column use, follow these steps:
1 Select the on-column syringe needed for the column size. See your Agilent
catalog for consumables and supplies, your GC operating documentation,
and the Agilent web site (www.agilent.com/chem) for a list of parts.
2
Prepare the GC inlet. (See your GC operating documentation for
instructions).
• Check your needle to column size.
• Verify that the insert matches the needle size.
•
If necessary, replace the septum.
3
Verify that the correct needle support assembly ( Figure 55 ) is installed in
the injector. Replace if necessary. See “Replacing the Needle Support
Assembly on the G2913A Injector” on page 153.
For a list of other consumables needed to perform these injections, see your
GC operating documentation.
Figure 55 Needle support assemblies
250 µm/320 µm
(G2913-60978) 530 µm
(standard, G2913-60977)