Unplug the electrical cord from the device. Fill the pitcher with water to a level halfway between the MIN and MAX lines. Add a small amount of dish soap, secure the head, plug the electrical cord back in, and press the Clean button.
After the Clean cycle has completed, unplug the electrical cord from the device, and rinse the remaining soap out of the interior of the machine. Note: DO NOT WET OR SUBMERGE ANY BLACK PARTS OF THE MACHINE.