Thermo Scientific DSQ II, Руководство по оборудованию

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1
Basic Operations
Installing a Column into the GC/MS System
Thermo Scientific DSQ II Hardware Manual 13
Method Two
If you have the optional inlet valve, follow these steps:
1. Remove the DSQ II front and top covers to get a better view of the column. You can also
use a flashlight to light the interior of the source through the vacuum interlock if you do
not wish to remove the covers.
2. Use the I/R tool to remove the ion volume, as described in “Cleaning the Ion Volume
Without an Inlet Valve” on page 43 .
3. Insert the column into the transfer line and use your fingers to tighten the transfer line
nut.
4. Push the column in until you can see it through the inlet valve.
5. Pull the column back just far enough that you cannot see it.
6. Tighten the transfer line nut and transfer line union.
7. Use the I/R tool to replace the ion volume, as described in “Cleaning the Ion Volume
Without an Inlet Valve” on page 43 .
8. Condition the transfer line ferrule. Graphite/vespel ferrules like the transfer line ferrule
require conditioning to ensure a leak-tight seal.
a. Raise the oven temperature to the maximum temperature you will operate the
column (normally 300 °C).
b. Wait 10 minutes.
c. Lower the oven temperature to 30 °C and allow it to cool before continuing.
d. Re-tighten the transfer line nut and the transfer line union.
9. Set up the TRACE GC Ultra.
a. Make sure the column does not have any sharp bends and that it does not touch any
metal objects or walls inside the oven.
b. Raise the oven temperature to the initial temperature you will use (normally 40 °C).
Tip Slide a septum on the column before the transfer line nut to make it easier to measure
the proper distance between the nut and end of the column.
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.
Note Turn on vacuum compensation (under the Right or Left Carrier menu).