Dionex AutoTrace 280 Operator’s Manual
110
Doc. 065330-05 03/2020
6. Using the #2 Phillips screwdriver, remove the six Phillips screws securing the
rear panel to the system. Set the panel and screws aside.
7. Remove the electrical cable from the bottom of the 12-port valve.
8. Note the four Phillips screws next to the valve stator. (The screws are on the
outside, near the face of the 12-port valve.) While holding the valve in place,
remove the four screws.
NOTE If you do not support the valve, it will fall down inside
the Dionex AutoTrace 280 when you are undoing the last
screw.
Install the Bracket on the New Valve
1. Remove the bracket from the motor on the defective valve by unscrewing the
3-mm hex screws.
2. Install the bracket onto the new valve, using the 3-mm hex screws.
Install the New Valve
1. Install the new valve, using the four Phillips screws previously removed.
NOTE Be sure to align the valve correctly on the instrument
panel. Port 1 should be toward the top, and aligned with
the top “P” on the panel.
2. Reconnect the electrical connection.
3. Reinstall the Dionex AutoTrace 280 rear panel with the six screws previously
removed.
4. Reattach the fittings to the valve stator as
and
These are polymeric or PEEK fittings; do
not over-tighten.
Figure 5-14. 12-Port Valve Fitting Connections
