11 Maintaining the ECD
To Replace the ECD Fused Silica Indented Mixing Liner and Install the Makeup Gas Adapter
Maintaining Your GC 177
To Replace the ECD Fused Silica Indented Mixing
Liner and Install the Makeup Gas Adapter
1 Gather the following:
• Fused silica indented mixing liner, see “Consumables and Parts for the ECD” on
page 174.
• 1/4-inch Swagelok nut
• 1/4-inch Vespel/graphite ferrule
• 9/16-inch wrench
• Methanol
• Lint-free gloves
2 Place GC in maintenance mode: Maintenance > Instrument > Perform Maintenance >
Maintenance Mode > Start Maintenance. Wait for the GC to become ready to continue (all
zones cooled to safe handling temperatures).
Be careful! The oven and/or detector may be hot enough to cause burns. If the detector is
hot, wear gloves to protect your hands.
Wear safety glasses to protect your eyes from flying particles while handling, cutting, or
installing glass or fused silica capillary columns. Use care in handling these columns to
prevent puncture wounds.
3 Remove the column from the makeup gas adapter.
To prevent damage avoid flexing/bending the tubing on the makeup gas adapter.
4 Remove the makeup gas adapter.
a Loosen the adapter nut with a wrench and slide out the makeup gas adapter from the
ECD. Remove the ferrule.
The makeup gas adapter will remain attached to the supply tubing and hang
suspended in the oven.
b Adjust the adapter’s position so that maintenance can be performed on the adapter
easily and without obstruction.
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