Follow these steps

  1. Press the SERVICE button two times to set the needle in the second service position over the wash port.

  2. Turn off the autosampler with its main power switch.

  3. Remove insulation cover.

  4. Remove the capillary from the insulation cover mounting bracket.

  5. Squeeze the insulation cover mounting bracket and push it upward to remove it.

Figure: Removing the insulation cover mounting bracket

NOTICE

The torque screwdriver with needle seat bit can get damaged if not used correctly.

  • Insert the needle seat bit completely into the torque screwdriver.
  • Insert the torque screwdriver with needle seat bit straight on the needle seat.
  • Never push or pull the tool with unnecessary force.

  1. Insert the needle seat bit into the torque screwdriver.

  2. Position the torque screwdriver with needle seat bit at the needle seat.

  3. Turn the tool counterclockwise to remove the needle seat.

    4. Figure: Removing the needle seat with the torque screwdriver

  4. Unpack the replacement needle seat.

  5. Insert the needle seat and turn it clockwise with your fingers until it is hand-tight.

    6. Figure: Inserting the needle seat

  6. Use the torque screwdriver with needle seat bit and turn it clockwise to tighten the needle seat until the torque limitation has been reached, which is indicated by a clicking sound.

NOTICE

Needle seat can get damaged when using other tools

The torque screwdriver with needle seat bit is intended for tightening the needle seat. With the help of this tool the needle seat is tightened correctly and will not be overtightened. Do not use any other tool.

Figure: Tightening the needle seat

  1. Depending on the issue, continue with steps in section Replacing Needle Unit or Completing the Needle Seat and Needle Unit Replacement.