Agilent Technologies 6890 Series, Service Manual, Page: 256 / 867

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Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Nitrogen Phosphorus Detector (NPD) 320
Replacement procedures
4. If the tubing from the gang fitting bends to the left, reshape it so that it
bends up and back from the block as shown in Figure 320-14.
5. Insert the gang fitting through the cutout in the manifold bracket and
install it onto the new manifold assembly so that the tubing runs back
and away from the fitting.
• Be sure the left tube clears the inner edge of the bracket. See
Figure 320-14.
• Be sure that the O-rings are in place.
Tighten the gang fitting screw firmly to compress the O-rings.
6. Route the ribbon cable behind the manifold assembly as shown in
Figure 320-13. Then, slide the manifold and bracket assembly into the
slot until the bracket seats flush against the end of the rails. See
Figure 320-14.
Figure 320-13 Routing the ribbon cable
Back view of manifold Manifold installed with cable routed to left