One of the most difficult service calls to handle is the complaint of the presence of white dust. The majority of these complaints are from residential users. In many instances , the statement is made,"We have more dust now than we ever had." These service calls are difficult because the limitations of the installation must be explained.
White dust actually can be described as "clean dirt ". Where  it is noticed , an examination will show the user that it is largely lint. It is most noticeable on dark furniture, and is usually found in homes containing new furnishings such as carpeting, drapes, etc., which give off more lint than such items that have been used and cleaned for some time. The amount of lint generated is increased by activity in the air; especially by children, pets, and heavy house traffic.
 Visible lint particles, like cigarette ashes, are heavy as compared to the extremely small,individual dirt particles which make up cigarette smoke. Their weight causes the lint particles to "fall out" on  furniture, floor, etc., just as cigarette ashes fall to the floor while cigarette smoke particles remain suspended in the air. Dirt particles, such as heavy pieces of lint or ash, which do not remain airborne, never reach the electronic air cleaner and the unit cannot remove these air particles. Fortunately, the black, greasy dirt particles with the damaging staining power are light in weight, remain in the air stream, and do reach the electronic air cleaner. It is their removal from the air that keeps the lint clean therefore, more visible.
There is no question that the electronic air cleaner is capable of collecting lint in addition to other atmospheric contaminants.This is easily confirmed by examining the air entering side of the ionizing-collecting cell before it is washed. You will note that along with the black greasy dirt collected, there are lint particles that did stay airborne long enough to reach the electronic air cleaner.
Lint from new furnishings will decrease with wear. The length of time depends on the amount and type of fabric in the furnishings and the air circulation. In some areas, a bedroom for example, a lint condition may always remain.
Normally, continuous fan operation (24 hours a day) will minimize this problem. If this cannot be accomplished, the controls should be set as near continuous fan operation as possible. In some instances the use of a two speed fan motor is advantageous.
Cold air returns should not  be restricted in any manner, particularly from rooms in which lint is prevalent. if the returns in these rooms are blocked, the return air will seek another, longer path. In traveling a greater distance, lint fallout is increased.
Actually, the presence of large, clean lint particles is further proof that the air cleaner is doing its superior air cleaning job. Electronic  air cleaners are dependent on the movement of air currents to bring the dirt particles to the unit for their removal. Weighty, not-airborne particles such as cigarette ashes weigh too much to remain in the air currents while other particles, such as cigarette smoke, remain  suspended and are carried to the electronic air cleaner for removal.
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Beaver, PA 15009
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PA PA005633