Leak Testing Epc And Manual Inlets; Preparation - Agilent Technologies 6890 Series Service Manual

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Cool On-Column Inlet

Leak testing EPC and manual inlets

Cool the column to ambient.

Remove the column from the inlet fitting on the inside of the oven.

If the quality of the septum is unknown, replace it now.

Figure 230-7

Cap the septum purge vent and the inlet's column fitting. Use solid

(no-hole) Vespel type ferrules 1/8-inch (part no. 0100-1372) and 1/16-

inch (part no. 5181-7458) with a 1/8-inch Swagelok nut (part no.

5180-4103) and a capillary column nut.

As alternate capping devices, a 1/8-inch Swagelok cap can be used for the

septum purge vent and a capillary column nut with a solid piece of wire the

size of a paper clip and a 0.5 mm ID graphite ferrule may be used for the inlet

column fitting.

Septum retainer

Location of septum

Agilent 6890 Gas Chromatograph Service Manual

6890a 6890 plus