When

Post-column cooler is defective

Parts required

  • Post-column cooler

  • 2 screws

Preparations

CAUTION

Hot Surfaces

Surfaces inside the device may become hot during operation. Touching hot parts might cause burns.

  • Allow the post-column cooler to cool down before starting the service procedure.
  • Do not touch the inner side of the column chamber cover. When opening the column chamber cover, only grasp it by its holder.
  • Allow hot surfaces to cool down before starting replacement or maintenance procedures.

TIP

To cool down the post-column cooler quickly, press the FAST COOL button on the keypad. Wait until the button LED is green.

Follow these steps

  1. Open the column compartment door.

  2. Disconnect the post-column cooler capillaries from the detector and the column switching valve or the column.

  3. Loosen the 2 screws on the post-column cooler.

  4. Removing post-column cooler screws
    Figure: Removing post-column cooler screws
  5. Detach the post-column cooler from the mounting plate.

  6. To mount the new post-column cooler, follow the instructions in Installing the Post-Column Cooler (VH-C10 only).

TIP

When the procedure is complete, cancel the Fast Cool mode by pressing the FAST COOL button again.