When

  • Switching valve is defective

  • To change between different valve types

Parts required

  • Vanquish switching valve as required by the application

  • 4 screws

Tools required

Screwdriver, Torx T10

Preparations

  1. Turn off the pump flow.

  2. Disconnect all liquid lines connected to the switching valve.

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

  4. Do not yet remove the fitting plugs that cover the valve ports on the replacement switching valve.

Removing the Vanquish Switching Valve

  1. Loosen the 4 screws on the switching valve. Keep the screws for installation of the replacement switching valve.

    2. Figure: 4 screws on the switching valve

  2. Carefully pull the switching valve out of the housing. To facilitate the removal, screw a fitting plug into a valve port.

    3. Figure: Removing the Vanquish switching valve

  3. Disconnect the cable from the connector on the rear of the switching valve.

Figure: Disconnecting the cable from the connector

If no Valve is Installed after Replacement

  1. Seal the cable connector with a water-resistant tape.

    2. Figure: Sealing the cable connector

  2. Push the cable into the housing.

  3. Place the cover plate onto the valve opening.

  4. Tighten the 4 screws of the cover plate.

Installing the Vanquish Switching Valve

  1. Connect the replacement switching valve to the cable.

    2. Figure: Connecting the cable

  2. Push the cable into the housing.

  3. Carefully push the switching valve into the housing.

    4. Figure: Installing the Vanquish switching valve

  4. Check the correct orientation of the switching valve: Port 3 must point upwards.

  5. With a screwdriver, tighten the 4 screws on the switching valve.

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

  7. Connect the liquid lines as required by the application.

  8. Turn on the power to the column compartment.

  1. Inspect the valves visually for leakage.

  2. Run the script: D02 - Test System Tightness (What Should Be Tested = Sampler). This script also tests the column switching valves for leakage.