2
Changing the Column
Connecting the Column to the Transfer Line
Thermo Scientific
TSQ 8000 Evo User Guide
25
Figure 23.
Positioning the Column in the Transfer Line
22. Tighten the spring loaded transfer line nut 1 flat forward—back to where it is secure
enough in the transfer line that you cannot move it.
23. Tighten the spring loaded transfer line nut 1 additional quarter turn.
24. Remove the cut septum.
25. Condition the graphite Vespel ferrule:
a. Raise the oven temperature to the maximum temperature you will operate the GC.
b. Wait 10 minutes.
c.
Lower the oven temperature to 40 °C (104 °F) and allow it to cool before continuing.
26. Close the front door of the GC.
27. Restore working conditions.
a. Raise the oven temperature to the initial temperature that you will use.
b. Turn on vacuum compensation on the GC.
28. Power on the TSQ 8000 Evo instrument. See
instructions.
29. Once the instrument is pumped down and able to scan, view air water spectra and look
for evidence of leaks with a large
m/z
28 signal. If you observe a leak, stop scanning and
gently tighten the nut in small increments until no leaks appear when scanning.
Column
Transfer Line
Spring Loaded Transfer
Line Nut
Septum
WARNING BURN HAZARD:
The oven may be hot. Allow it to cool to
room temperature before opening it. The injector will still be hot, so do not touch
it.
Содержание TSQ 8000
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