4) All parts that should be defective due to: negligence or neglect in the use or custody, incorrect or improper use of the appliance are not covered by this guarantee; non -compliance with operating instructions; incorrect installation, repairs made by unauthorized personnel, use of non -original accessories or parts of spare parts; normal wear of the materials due for the use of the appliance (in particular, calcification and consumption of parts subject to usury, such as gaskets or water filter); Lightning, humidity, fire, incorrect power supply voltage, other events not objectively attributable to the manufacturer or, in any case, not constituting defects in manufacture of the appliance. Always releases a Feedback Positive with maximum stars (5) on all voices. The aim of our business i.