240 Programmed Temperature Vaporization Inlet (PTV)
Replacement procedures
30 of 46
Jun 2001
Inlets
Agilent 6890 Gas Chromatograph Service Manual
Figure 240-19 Removing the carrier gas line
5. Reconnect the carrier gas line.
6. Check all connections on the sampling head for leaks. If necessary, tighten
them again by hand.
Cleaning the septumless head
Minor deposits from sample mixtures can collect in the head. Dust and
abraded material particles can enter together with the syringe needle,
eventually causing leaks.
1. Disconnect the carrier gas line and unscrew the head from the inlet.
2. Unscrew the sealing element from the head. Carefully remove the Viton
seal and the pressure spring. Do not use a sharp object to extract the
valve body—this can leave scratches that cause leaks.
To Next Page
Loading...
Need help?
General
