240 Programmed Temperature Vaporization Inlet (PTV)
Replacement procedures
26 of 46
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
3. Once the PTV manifold is removed, remove the two mounting screws that
secure the thermocouple conversion board onto the pneumatics board,
and remove the board.
Figure 240-17 Replacing the PTV thermocouple PCB
4. Replace the board and reassemble in reverse order.
5. Check the system for leaks.
Replacing the filter
1. Turn off the GC oven and the inlet and allow them to cool.
2. Set all GC flows to zero.
3. Remove the pneumatics cover.
Remove
2 screws
PTV thermocouple PCB
PTV manifold assembly
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