(for bathtubs equipped with hydromassage system and Logic Turkish bath) In this case the Authorised Technician will check the visible parts of the product, its installation and provide explanations on the procedures for using the product in question. This service is completely free of charge. If faults are discovered during start-up due to negligence during the assembly or incorrect installation, any repair or adjustment by the Authorised Technician will be charged directly to the user.