Removing An Epc Flow Manifold - Agilent Technologies 6890 Series Service Manual

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Figure 330-10

Removing an EPC flow manifold

Early models of the 6890 GC used Type 1 EPC flow manifolds. Later models

use Type 2 manifolds. Both types are covered here.

The TCD detector EPC flow manifold contains one inlet fitting for reference

and makeup gases. There are three tubes on the pneumatics block fitting going

to the TCD. One is the makeup gas and two are the reference gas.

Before proceeding, turn off the detector and any detector gases at their

supply. Then turn off the main power switch and unplug the power cord.

Make sure you are properly grounded with an ESD strap before continuing.

Remove the detector cover, the pneumatics cover, metal RFI shield and

the rear top panel.

Thermal Conductivity Detector (TCD)

Sensor placement in the TCD cell

Agilent 6890 Gas Chromatograph Service Manual

Replacement procedures

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