Agilent Technologies 8860 Maintaining page 112

7 Maintaining the Packed Column Inlet
To Install a Packed Metal Column
14 Using two wrenches, one on the adapter and one on the column nut, tighten the column
15 Exit maintenance mode. Select Maintenance > Instrument > Perform Maintenance >
16 Establish a flow of carrier gas and purge as recommended by the packing manufacturer.
17 Heat the oven to 200 °C, cool it to a safe handling temperature, then re-tighten the column
18 Restore the analytical method.
19 After the GC becomes ready, wait 10 minutes then ignite the detector flame or adjust
Be careful! The oven, inlet, and/or detector may be hot enough to cause burns. If the oven,
WAR N IN G
inlet, or detector is hot, wear heat-resistant gloves to protect your hands.
20 Allow the oven, inlet, and detector to equilibrate at operating temperature, then retighten
21 Perform the inlet Leak & Restriction test.
22 Reset the maintenance counters.
112
Adapter
Ferrule
Nut
Packed column
nut an additional 1/4 turn (for a 1/8-inch column) or an additional 3/4 turn (for a 1/4-inch
column).
Maintenance Mode > Finished.
Generally:
• 20 to 30 mL/min for 2-mm id glass or 1/8-inch od metal columns
• 50 to 60 mL/min for 4-mm id glass or 1/4-inch od metal columns
connection. (Re-tighten until snug, only about 15 degrees rotation.) Repeat two more
times. This process will set the Vespel/graphite ferrule to help prevent leaks.
• For FPD+, immediately turn off the flame.
• For NPD, immediately turn off the bead.
offset on the NPD bead.
the fittings.
Maintaining Your GC