Replacing The Inlet Adapter - Agilent Technologies 6890 Series Service Manual

Gas chromatograph

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Lift the filter trap from the mounting bracket and unscrew the filter trap

Remove the old filter and O-rings and replace them.

Reassemble the trap.

Replacing the inlet adapter

The Graphpack–2M connector (the inlet adapter) at the bottom of the inlet is

sized to the column diameter. When installing a different diameter column,

change the adapter.

The adapter number is stamped on the side of the adapters. Select the smallest

hole diameter that will accept the column.

Unscrew the column nut from the adapter. Remove the nut and the

column from the inlet.

With a 6 mm wrench, remove the inlet adapter, being careful not to lose

the silver seal inside. Save the adapter for later use.

Select the appropriate inlet adapter for the column to be installed. Insert

a new silver seal (part no. 5182-9763, package of five) into the adapter

and screw the adapter onto the inlet fingertight. Tighten the adapter an

additional 1/16 to 1/8 turn.

Be careful not to overtighten the adapter. The inlet can be damaged if the

adapter is forced. If the adapter leaks, check the silver seal and replace

it if necessary.

Programmed Temperature Vaporization Inlet (PTV)

Inlet adapter

Agilent 6890 Gas Chromatograph Service Manual

Replacement procedures

6890a 6890 plus