CAUTION To prevent electric shock hazard, do not connect to mains power supply while grille is removed. -The use of apparatus in moderate climates; -No naked flame sources, such as lighted candles, should be placed on the apparatus; - Minimum distances 10cm around the apparatus for sufficient ventilation; -The ventilation should not be impeded by covering the ventilation openings with items such as newspaper, table cloths, curtains etc.