Your projector produces a high temperature when working. It is entirely normal. However, there are some instances when the heat it produces is too much, causing it to overheat. Most projectors automatically turn off when it has overheated. But to know for sure, very carefully touch the surface of your projector. If you feel like it is close to being too hot to touch, turn it off and unplug it immediately. Moreover, Epson says that projectors should not produce heat above 95 F.