This espresso machine cleaning kit, installed by a plumber, allows the water tank to automatically re-fill. Water connection allows for uninterrupted operation of your Jura Commercial coffee center. 3 different kits are available: one for the XS90, one for the GIGA X7 & GIGA W3 and one for the X9. External water filtration is also required, but some water hardness is required. These kits will not fit on models designed for the home. The GIGA models require a piece of the water tank to be cut out.