Agilent Technologies 7820A - To Install a Packed Glass Column

112 Maintaining Your GC
6 Maintaining the Packed Column Inlet
To Install a Packed Glass Column
1 Gather the following:
• 9/16-inch wrench
• Two 1/4-inch brass nuts (See “Consumables and Parts for
the Packed Column Inlet” on page 92.)
• Two 1/4-inch Vespel/graphite ferrules
• Lint-free gloves
2 Load the GC maintenance method and wait for the GC to
become ready.
3 Assemble a brass nut and Vespel/graphite ferrule on each
end of the column.
Glass columns must be simultaneously inserted into the inlet
and detector and installed parallel to the oven door. When
conditioning the column, do not attach the column to the
detector.
4 If conditioning the column, insert the column into the packed
column inlet until it bottoms. Withdraw the column 1 to
2 mm. Finger-tighten the inlet column nut. (See “To
Condition a Packed Column” on page 115.)
WARNING
Be careful! The oven, inlet, and/or detector may be hot enough to
cause burns. If the oven, inlet, or detector is hot, wear
heat-resistant gloves to protect your hands.
CAUTION
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
CAUTION
Overtightening the column nut or forcing it to bottom in either the
inlet or detector may shatter the column.