220 Purged/Packed Inlet
Replacement procedures
4 of 20
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Replacement procedures
Replacing the inlet
WARNING Turn off the oven and turn off the inlet you are replacing and let them cool
down. Turn off the carrier gas supply pressure. Then turn off the main power
switch and unplug the power cord.
1. Disconnect the column from the bottom of the inlet.
2. Remove the thermal cup and insulation from the bottom of the inlet
column fitting.
3. Remove the inlet liner/insert by loosening the 1/4-inch nut on the inlet
liner. The metal bottom plate on the oven ceiling does not need to be
removed.
Figure 220-4 Removing the column and the thermal cup (inside oven)
Metal plate
Insulation
Thermal cup
Column nut
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