Smeg STU8222 User manual - Page 27

User instructions 4. OPERATING INSTRUCTIONS Once the dishwasher has been correctly installed, prepare for use as follows:  Adjust the water softening system;  Add the regenerating salt;  Add the rinse aid and detergent. 4.1 Using the water softening system The amount of scale contained in the water (water hardness index) can cause whitish staining on the dry dishes, which tend to become dull over time. The dishwasher is equipped with an automatic softening system which uses a special regenerating salt to reduce the hardness of the water. SALT When using water of medium hardness, the regenerating salt container should be refilled after approximately 20 washing cycles. The salt container can hold approximately 1 Kg of salt in grains. Some models are equipped with an optical no-salt indicator. In these models, the cap of the salt container contains a green float which descends as the salt concentration in the water drops. When the green float can no longer be seen through the transparent cap, the container must be topped up with regenerating salt. The container is situated at the bottom of the dishwasher. After removing the lower basket, unscrew the salt container cap by turning it anticlockwise and pour in the salt using the funnel supplied with the dishwasher. Before replacing the cap, remove any salt residues from around the opening.  When using the dishwasher for the first time, in addition to the salt it is also necessary to add one litre of water to the container.  Each time the salt container is refilled, make sure that the cap is securely closed. The mixture of water and detergent must never penetrate the salt container, as this would compromise the operation of the regeneration system. In the event of this occurring, the warranty will be invalidated.  Only use regenerating salt specially formulated for domestic dishwashers. If using salt tablets, do not fill the container completely. 27