![]() Otherwise, it is recommended to clean the Projector when the equivalent lamp or light source hour has reached 50% of its rated total light source life. ![]() BenQ suggests to clean the Projector regularly with a vacuum cleaner from the outside around the vents area. How quickly the dust accumulates depends on the operating environment and the settings of the Projector. Other symptoms include washed out colours or unclear projection. As a safety precaution the Projector can automatically shut down or avoid turning on completely if the Projector detects overheating. It is important to note after long usage of a Projector that buildup of dust can eventually hinder air circulation and cause the Projector to overhead. Airflow for cooling can accumulate dust and other particles over time. To ensure the Projector does not overheat, cooling down a Projector mainly involve the use of one or more fans inside the Projector to draw in cool air and exhaust warm air. For example, a typical lamp can reach temperature of up to 300 degree Celsius. Depending on the type of light source, Lamp, LED or Laser, light source can emit high amount of heat and can get warmer with increased brightness as larger output of electricity is necessary. The light source inside the Projector is the primary light source responsible to deliver high brightness projection.
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