How can you prevent over heating of the projector lamp?
Never operate the halogen lamp above the rated operating temperature. The seal temperature should always be maintained below 350°C and the bulb temperature should be kept between 250°C and 550°C. Make sure that the cooling system is functioning properly. Do not allow one lamp to directly expose another. If a reflector is being used make sure that the IR is not reflected back into the filament or into its support. Finally, make sure that particles do not fall on the lamp.