Why does it say open/close on the demineralization cartridge cap?
The directions are there to assist you should you decide to use the refill option to replace the cartridge granules. If you open the cap before placing the cartridge in the water tank you will notice granules in the water tank and base of the unit. Immediately turn off the unit, and empty the water out of the base and water tank. Remove all granules from base and water tank. Use brush to clean around membrane. Caution: Do not dispose of granules in your sink! Used granules must be placed in the trash! back to top Q: I just replaced my cartridge, and the contents and water in the base has turned a blue-green color. A: This sometimes occurs when the cartridge, or even the granules, are replaced. This does not occur with all replacement cartridges or granules, and is a reaction of water content and the Ultrasonic vibrations. This is not an indicator to replace the cartridge.
