When we inspect a dust collection system, we always work on the PD blower (positive displacement blower) if equipped with one. Figure 1 a PD blower with intake filter taken out Intake filter Nearly every time an intake filter was taken out, it was dirty and covered with dust or dirt. Since the intake filter is normally shrouded inside of a cover, it is not visible and is forgotten or ignored easily by maintenance guys or other service contractors. If it is a paper or felt element, we will tell the customer when to replace it, or if it is a wire mesh element, we will clean it with lukewarm water, and if there is oil on it, we will wash it with mild detergent. Because of the tight clearances used in the design and manufacturing of the PD blowers, they require filtered intake air. Proper maintenance of the intake filter will help insure a long service life for the PD blower. Consequently, a clogged intake filter will cause poor performance and overheating of the PD blower. Her...
Air Pollution Control and Industrial Ventilation Technologies and Services