1 Step 2 Step 3 Step 4 Tools required to clean the filter are a stepladder, Philips screwdriver and a can of compressed air. The temperature indicator light is flashing orange - the projector is too hot. The temperature indicator lamp is steady red - the projector turns off automatically because of overheating. The temperature indicator light is flashing red - indicating a problem with the cooling fan or temperature sensor.
Dust appears on the fan exhaust port of the projector.
How often you clean the filter on an ELP5350 will depend on the classroom environment. An environment that has minimal dust will be cleaned less often than an environment that has a lot of chalk dust. Epson recommends that the air filter in the Epson ELP-5350 projector be cleaned every 100 hours of usage. Another way to tell when the filter needs to be cleaned is when dust accumulates at the fan exhaust port of the projector. If the filter is not cleaned periodically, it can become clogged with dust, preventing proper air ventilation within the projector and causing overheating, which will damage the projector.