9 Maintaining the PTV Inlet
To Clean the Septumless Head on the PTV Inlet
150 Maintaining Your GC
To Clean the Septumless Head on the PTV Inlet
1 Gather the following:
• Syringe with 23-gauge needle, see “Consumables and Parts for the Programmable
Temperature Vaporization Inlet” on page 144.
• Septumless head rebuild kit
• Hexane
• Clean, lint-free gloves
• 5/16-inch wrench
• Lint-free gloves
2 Manually set the inlet and oven temperature to < 40 °C, and wait for the inlet, oven, and
other parts you might come into contact with inside the oven, to cool before continuing.
Alternately, place the GC in maintenance mode: Maintenance > Instrument > Perform
Maintenance > Maintenance Mode > Start Maintenance.
3 Disconnect the carrier gas line.
Be careful! The oven and/or inlet may be hot enough to cause burns. If either is hot, wear
heat-resistant gloves to protect your hands.
4 Unscrew and remove the septumless head assembly from the inlet.
5 Unscrew the sealing element from the head assembly and carefully remove the Viton seal
and the pressure spring
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