Routine Maintenance: General
Maintaining a sampling valve (diaphragm type)
Released: March 2004 6850 Series II GC User Information page 109 of 256
8. Peel off the diaphragm using forceps.
9. Align the new diaphragm over the mounting posts so that the valve dia-
phragm channel is oriented toward the shiny valve face.
10. Install the valve head using the center mounting screw.
11. Reinstall the carrier gas inlet line and sample loop.
12. Place the valve box over the assembly, and tighten the two thumb screws.
13. Check for leaks. See “Leak testing the split/splitless inlet” on page 128, or
“Leak testing a purged packed inlet” on page 144, or refer to your G2629A
Control Module documentation for an automated test.
Replacing a liquid sampling valve diaphragm
See “Replacing the gas sampling valve loop and diaphragm” on page 106.
Diaphragm
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