Agilent Technologies 6890 Series Service Manual page 271

330 Thermal Conductivity Detector (TCD)
Replacement procedures
Figure 330-6
4. Type 1 manifold
Remove the Torx T-20 screw from the front of the manifold as shown. If
you do not intend to remove the manifold, slide it to the rear so that you
can remove the screw holding the front pneumatic block, then return it
to position and insert the screw to secure it.
5. Type 2 manifold
The pneumatics block is on the rear face of the manifold. If you do not
intend to remove the manifold, remove the screw holding the pneumatics
block. Remove the T-20 screw on the front only if you intend to remove
the manifold.
a.
8 of 24
Disconnecting the detector flow lines
Remove the Torx T-20 screw from the front of the manifold as shown.
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Type 2 manifold
Type 1 manifold
Front pneumatics
block
Switching valve leads
T-20 screw
Jun 2001