Heat

An overhead projector contains several parts that heat up during use. You might burn yourself on these parts if you don t wait for the projector to cool completely before performing maintenance or repairs, such as lamp replacement. Certain actions might also cause these and other parts, including the fan or electrical cord, to overheat and burn. For example, you might cause the projector to overheat if you block the cooling air vents, use an extension cord rated for less amperage or run the projector for a long period.