[. . . ] Warning: If the door, hinges/latches or door seals are damaged, the microwave must not be operated until it has been repaired by an authorized service person. [. . . ] To prevent this possibility the following steps should be taken: Warning: Liquids or other foods must not be heated in sealed containers since they are liable to explode. Warning: Some products such as whole eggs and sealed containers ­ for example, closed glass jars ­ may explode and should not be heated in this oven. Always pierce the yolk, then cover and allow the standing time of one minute before removing cover. Warning: Microwave heating of beverages can result in delayed eruptive boiling; therefore care Never use abrasive cleaners, commercial oven cleaners or steel wool pads on any part of the microwave oven. Cleaning the exterior Never use a knife or any utensil to remove deposits from the oven surfaces. This appliance must not be used on a non-earth protected power supply. [. . . ] The manufacturer declines any liability should this safety measure not be observed. [. . . ]