320 Nitrogen Phosphorus Detector (NPD)
Replacement procedures
26 of 32
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Figure 320-14 Manifold, after installation
7. Route the gas tubing behind the manifold, over the top of the chassis, and
through the slots.
8. Connect the ribbon cable to the mating connector on the pneumatics
board. Arrange the cable to keep it away from the valves and keep it from
being pinched against the manifold.
For the back detector, you may want to loosen the manifold and slide it
out of the carrier a few centimeters to connect the cable to the pneumatics
board. Then, reinstall the manifold.
9. Secure the manifold in place using the Torx T-20 screw.
10. Using a pair of needle-nosed pliers, remove the appropriate top rear panel
detector cutout for the NPD. Also remove any cutouts needed to access
other manifolds or accessories installed in the GC. See Figure 320-15.
Attach gang fitting
Bracket is flush with
carrier rails
Check for interference
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