Agilent Technologies 6890 Series Service Manual page 5

Contents
Manually controlled inlet ........................................................................... 5
Split mode ............................................................................................ 5
Splitless mode ..................................................................................... 6
Replacement procedures ........................................................................... 8
Removing the inlet .............................................................................. 8
Top insert assembly replacement ..................................................... 9
Heater/sensor assembly replacement ............................................ 11
Reinstalling the inlet......................................................................... 11
Replacing the split vent trap............................................................ 13
Replacing the split vent trap filter cartridge.................................. 15
Replacing the inlet EPC flow manifold .......................................... 17
Replacing the supply fitting on a Type 1 flow manifold............... 18
Leak testing-EPC and manual inlets .................................................... 19
Preparation ........................................................................................ 19
Performing the leak test-EPC inlets ............................................ 21
Performing the leak test-manual inlets ....................................... 24
Leak testing the EPC module only.......................................................... 26
Forward pressure valve leaks ......................................................... 27
Locating leaks on the flow manifold .............................................. 27
Correcting leaks ................................................................................ 29
Potential leak points......................................................................... 30
220 Purged/Packed Inlet
Theory of operation.................................................................................... 1
EPC inlet .............................................................................................. 1
Manually controlled inlet ................................................................... 3
Replacement procedures ........................................................................... 4
Replacing the inlet .............................................................................. 4
Replacing an EPC flow manifold ...................................................... 8
Replacing the supply fitting on a Type 1 EPC manifold................. 9
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Contents
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001