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4. Slide the compression fitting onto the longer
straight end of the new liner with the
threads pointing toward the end of the liner.
5. Place a Graphpack-3D ferrule over the end of
the liner with the recessed end towards the
compression fitting. See Figure 1-46. Slide
the ferrule towards the fitting until about
2 mm of liner is exposed beyond the ferrule.
6. Slide the compression fitting up to the fer-
rule. Screw the ferrule guide gently onto the
compression fitting until it is fingertight.
7. Remove the ferrule guide, then slide the com-
pression fitting. The ferrule should now be
set with 1 mm of liner exposed. Check that
the graphite within the ferrule is flush with
the top of the metal collar.
Released: April 2004
8. Insert the liner into the inlet from above until
9. Replace the sampling head and reconnect the
10. Check all connections for leaks. If necessary,
Diagnostics
Cryo time-out
When a run does not start within a specified time
after the oven equilibrates, cryo time-out occurs
and the inlet temperature shuts down.
6850 Series Gas Chromatograph Service Procedures
the unpacked side of the ferrule rests on the
top of the inlet.
lines, if necessary.
tighten them again by hand.
114
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