Agilent Technologies 6890 Series Service Manual page 133

240 Programmed Temperature Vaporization Inlet (PTV)
Replacement procedures
6. To replace the PTV front trap assembly, disconnect the split vent line
from the inlet. Unscrew the filter assembly and remove the PTV front trap
assembly.
Filter and O-rings
(2) (not shown)
PTV front trap
assembly
Filter and O-rings
(2) (not shown)
PTV front trap
assembly
Figure 240-16
7. Inspect the O-rings and filter in the filter trap, and replace if necessary.
8. If replacing the PTV gang weldment, install new O-rings in the manifold
plumbing block.
24 of 46
PTV plumbing assemblies (septumless head shown)
Inlets
Agilent 6890 Gas Chromatograph Service Manual
PTV SMLS
gang weldment
Jun 2001