Inlets and valves
6850
6850
Released: April 2004 6850 Series Gas Chromatograph Service Procedures 73
5. Disconnect the sampling valve from the inlet
at valve port 1. Cap the line to the inlet using
the tube cap from the direct-tube assembly.
Install the direct-to-column line
1. Open the lid and disconnect the column from
the inlet. Plug the inlet column fitting with a
no-hole ferrule and column nut.
Caution
Do not use the 1/16-inch direct-tube assem-
bly supplied in this kit to punch the hole
through the insulation unless the protective
cap is on. If left unprotected, insulation will
be trapped in the tubing!
2. Locate the small through hole in the oven lid
between the purged packed inlet and the
valve box. There is a corresponding hole in
the bottom of the oven lid, behind the inlet.
Using a spare 1/16-inch tube, a wire, or a
thin screwdriver, clear the insulation from
this hole. See Figure 1-18.
Figure 1-18. Location of oven lid through
hole
(Liquid sampling valve shown)
Oven lid
through
hole
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