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Dust Collection SystemA dust collection system is an accessory found in commercial and home woodworking shops used to collect dust, chips and shavings at the point of origin. Dust collection systems work on the same principle as central vacuum systems in homes: A fixed motor creates suction, which is distributed through the space via a network of tubes and flexible hoses to the point of use. Small dust collection systems use a single shop-type vacuum unit (single-stage) to create suction and perform air filtration. Larger systems (dual-stage systems) separate larger particles from fine dust using a precollection canister. Air from these units is sometimes exhausted outdoors or filtered and recirculated back into the work space. Dust collection systems are often part of a larger air quality management programme that also includes large air filtration units mounted to the ceiling of shop spaces and mask systems to be worn by works. Air filtration units are designed to process large volumes of air to remove fine particles (2 to 10 micrometres) suspended in the air. Masks are available in a variety of forms, from simple cotton face masks to elaborate respirators with tanked air. Proper dust collection and air filtration is an important element in any work space. Repeated exposure to wood dust can cause chronic bronchitis, emphysema, "flu like" symptoms, and have more dangerous results decades after exposure such as cancer. Wood dust also frequently contains chemicals and fungi which can become airborne and lodged deeply in the lungs, causing illness and damage.
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