2
Performing Routine Maintenance
Replacing a Column
Thermo Scientific
TRACE 1300 and TRACE 1310 Hardware Manual
75
a.
If your GC is equipped with the touch screen as user interface, select the
Leak Check
icon in the
Maintenance
menu, otherwise perform the Leak Check through the
Chromatography Data System by selecting the proper function.
b. Start the leak check to begin operation. The split and purge valves of the selected
channel are automatically closed and the channel is pressurized with carrier gas to the
leak check setpoint.
c.
The system monitors the pressure for one minute. If the pressure does not drop more
than the maximum allowed sensitivity value, then the leak check will pass.
If the leak check did not pass, you should use the leak detector to find and fix the
leaks.
d. Repeat the leak check until no leaks are indicated.
6. Calibrate the carrier gas flow (column evaluation).
a.
Carefully push the capillary column end into the flow meter section of the column
flowmeter connector. See
Figure 74.
Column Flowmeter Connector
b. Connect the flowmeter to the dedicated fitting on the column flow meter connector.
c.
If your GC is equipped with the touch screen as user interface, select
Back
or F
ront
Column
icon in the
Configuration
menu, otherwise perform the Column
Evaluation through the Chromatography Data System by selecting the proper
function.
d. Select the column and input the physical characteristics of the column.
e.
If a pre-/post-column is present, set the length and nominal internal diameter of the
pre-/post-column in the same valid ranges for the column. The following two lines
are added to the menu.
f.
According to the physical characteristics of the column, the system calculates and
displays the relevant Column K-factor.
Tip
Leaks can be caused by not tightening the fitting on the column flowmeter
connector. We recommend that you check that fitting before looking elsewhere.
A B C
To flowmeter
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