Agilent Technologies 6890 Series Service Manual page 657

1130 Actuators
Installing the valve actuator drivers
Tubing from side
of actuators goes
to this row of
connectors
Figure 1130-8
4. Run a length of 1/4-inch tubing out the hole on the rear of the GC in the
lower left corner (when facing the rear of the instrument). Connect this
tubing to your air supply.
5. Unscrew the screw plugs (if present) on the top of each driver you are
using. Replace the screw plugs with tubing connectors.
6. Plumb the tubing from each installed actuator to the tubing connectors
on the corresponding driver. The tubing from the side of the actuator
goes to the connector farthest from the main board. Grip the tubing with
a piece of sandpaper and push it onto the tubing connector.
Valve actuator alignment
1. Remove the valve box top assembly. See steps 1 through 3 of Installing
the valve box in section 1120 for the procedure.
10 of 12
Installing the supply fitting, tubing connectors, and actuator tubing
Valves
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001