[. . . ] electromagnetic fields (EMF) This Philips appliance complies with all standards regarding electromagnetic fields (EMF). If handled properly and according to the instructions in this user manual, the appliance is safe to use based on scientific evidence available today. [. . . ] HD4657 only: this rapid-boil kettle can draw up to 13 amps from the power supply in your home. Make sure that the electrical system in your home and the circuit to which the kettle is connected can cope with this level of power consumption. Do not let too many other appliances draw power from the same circuit while the kettle is being used. Do not use it to heat up soup or other liquids or jarred, bottled or tinned food. Always make sure you fill the kettle at least up to the bottom water level indication to prevent the kettle from boiling dry. Depending on the hardness of the water in your area, small spots may appear on the heating element of your kettle when you use it. This phenomenon is the result of scale build-up on the heating element and on the inside of the kettle over time. Although scale is harmless, too much scale can influence the performance of your kettle. Descale your kettle regularly by following the instructions given in chapter `Descaling'. This is perfectly normal and does not mean that the kettle has any defects. [. . . ] Environment Do not throw away the appliance with the normal household waste at the end of its life, but hand it in at an official collection point for recycling. Guarantee and service If you need service or information or if you have a problem, please visit the Philips website at www. [. . . ]