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PTV inlet
Replacing the PTV inlet, pneumatics,
and module
The entire PTV assembly can be easily replaced.
1. Turn off the oven and the inlet and allow
them to cool.
2. Turn off all flows at the initial gas supply.
3. Turn off the main power switch and unplug
the power cord.
4. Remove the top cover, the inlet fan cover,
the inlet cover, the left side panel, the top
rear panel, the pneumatics chassis cover,
and the RFI cover.
5. Remove the top mounting screw in the PTV
module assembly.
Released: April 2004
Figure 1-27. Removing the PTV module
6. Remove the column.
7. Loosen the three captive Torx screws which
6850 Series Gas Chromatograph Service Procedures
assembly
secure the inlet to the oven, and lift the PTV
inlet out of the oven.
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