For quickly changing between columns, the column compartment can hold one or two column switching valves. The valves can be installed at the positions shown in Interior Components.

Parts required

Column switching valve

Tools required

Screwdriver, Torx T10

Preparations

  1. Turn off the power to the column compartment. If the power is on, the switching valve can be damaged during installation.

  2. Do not yet remove the fitting plugs that cover the valve ports.

Removing the Column Switching Valve Cover

  1. Open the column compartment door.

  2. With the screwdriver, loosen the 4 screws on the switching valve cover.

  3. Figure: Switching valve cover screws
  4. Remove the screws and keep them for further installation.

  5. Remove the switching valve cover and gasket.

  6. 12
    Figure: Removing the switching valve cover and gasket

    No.

    Description

    1

    Gasket

    2

    Cover

  7. Carefully detach the cable from the rear of the switching valve gasket.

TIP

Keep the switching valve cover and gasket to cover the switching valve opening if the valve is removed again.

Installing the Column Switching Valve

  1. Check the orientation of the cable. The alignment pin in the middle of the connector on the cable should point downward.

  2. Connect the cable to the connector on the rear of the column switching valve.

  3. Push the cable into the housing.

  4. Carefully push the column switching valve into the housing.

  5. Figure: Installing the column switching valve
  6. With the screwdriver, tighten the 4 screws of the column switching valve.

  7. Remove the fitting plugs that cover the valve ports.

  8. Connect the liquid lines as required by the application. For instructions, see Connecting the Components to a Column Switching Valve.

  9. Turn on the power to the column compartment.

  10. Configure the column switching valve in the chromatography data system:

  1. In the Instrument Configuration Manager dialog box, select the position (Upper Valve, Lower Valve).
  2. Select the valve model.
  1. Switch the valve into the different positions and test the flow connections.