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Replacing the PTV with cooling
assembly
The PTV with cooling assembly, shown in
Figure 1-32., is generally the lowest level
replacement part.
Figure 1-30. PTV with cooling assembly
1. Turn off the inlet and allow the inlet to cool.
Released: April 2004
2. Turn off the oven and the interface and allow
3. Turn off all flows at the initial gas supply.
4. Turn off the main power switch and unplug
5. Remove the top cover, the inlet fan cover,
6. Remove the column.
7. Loosen the three captive Torx screws which
6850 Series Gas Chromatograph Service Procedures
them to cool.
the power cord.
the inlet cover, the left side panel, the top
rear panel, the pneumatics chassis cover.
secure the inlet to the oven, and lift the PTV
inlet out of the oven.
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