Routine Maintenance: General
Preparing to service the GC
Released: March 2004 6850 Series II GC User Information page 104 of 256
3. Install the assembly onto the vise-held female fitting and tighten the nut
finger-tight.
4. Push the tube fully into the female fitting, then withdraw it approximately
1 to 2 mm.
5. While holding the tube in position, use a wrench to tighten the nut further:
an additional 3/4 turn for 1/8-inch tubing, or an additional 1-1/4 turn for
1/4-inch tubing.
Preparing to service the GC
If you can edit setpoints using either a Control Module or a ChemStation/Cerity
Chemical, turn off the heated zones you will be working with and wait for them
to cool. If you cannot edit setpoints, load the SERVICE method.
The factory provides a default SERVICE method, which:
• Resets the oven setpoint to 35°C if greater than 35°C
• Turns inlet, detector, and auxiliary heaters off
• Turns cryogenic cooling off
• Turns the carrier gas off
• Turns the detector off
You can create a more elaborate SERVICE method if you wish using a Control
Module or a ChemStation/Cerity Chemical. See their documentation for more
detail.
Opening the oven
1. If an auto injector is present, lift it off its mounting post and place it on the
bench top or on the (optional) bracket that mounts on the side of the GC.
To Next Page
Loading...
Need help?
General
