2
Changing the Column
Connecting the Column to the Transfer Line
30
TSQ 8000 Evo User Guide
Thermo Scientific
24. 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.
d. Retighten the transfer line nut.
25. Close the front door of the GC.
26. Restore working conditions.
a. Raise the oven temperature to the initial temperature that you will use.
b. Turn on vacuum compensation on the GC.
c.
Power on the TSQ 8000 Evo instrument. See
instructions.
d. Once the TSQ 8000 Evo instrument is pumped own 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.
Note
If you are using a SilTite ferrule, follow the instructions that come with SilTite
ferrules. If you are using a graphite Vespel ferrule, they require conditioning to ensure
a leak-tight seal. See the spare parts guide for information about ordering these
ferrules.
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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