It is important to clean your automatic coffeemaker on a regular basis to ensure it works perfectly, gives you the best coffee flavour and has a long life. Among other things, the service button on the Purista® makes it easy to run the automatic cleaning and descaling program as well as access the water hardness setting. The brewing unit is simple to remove so you can also clean the interior easily. Furthermore, we recommend using a Melitta® Pro Aqua water filter. It filters the water each time a beverage is dispensed to ensure true coffee flavour and optimum taste. It also prevents limescale deposits in the water circuit meaning you only need to descale your automatic coffeemaker once per year.* * This figure is based on a 120 ml cup fill level with six dispensing processes per day and six filter changes according to the appliance information.