2000 MS Hardware Maintenance
126
GC Maintenance
NOTE: Avoid contamination of the transfer line, injector, and capillary column by
using clean tools and wearing clean lint-free Nylon
gloves. As you remove
parts, place them on a clean, lint-free, unpainted surface.
4. Use the alignment tool and a 5/16-in. wrench to loosen the brass nut on the
end of the transfer line.
5. Remove the capillary column from the transfer line.
6. Remove the brass nut, along with the ferrule, from the column.
7. Remove the ferrule from the nut. Discard the ferrule.
8. From inside the GC oven, pull the transfer line end of the column back into
the hole in the side of the GC.
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Leave the free end of the column on the floor of the oven.
To withdraw the transfer line from the vacuum manifold, proceed as follows:
1. Unplug the transfer line heating cable.
2. Grasp the nose of the transfer line, then rotate counterclockwise as you
press lightly toward the manifold. Gently slide the transfer line away from the
manifold.
3. Remove the nose clip, and then pull the transfer line away from the analyzer.
4. Wrap the transfer line in clean aluminum foil and place it on a clean, dry
surface.
5. Cover the analyzer opening with aluminum foil.
To remove the capillary column from the GC injector, proceed as follows:
1. Use a 5/16-in. wrench to loosen the capillary column nut that secures the
column to the injector.
2. Carefully remove the nut, ferrule, and column from the injector.
3. Slide the column nut, along with the ferrule, off the end of the column.
4. Remove the ferrule from the column nut. Discard the ferrule.
5. Carefully lift the column support cage, along with the column, from the
column hanger. Then, remove the support cage and column from the oven.
6. Seal the end of the column or insert the ends of the column into a septum.
7. Store the column and the support cage.
