Document wg3gGKmyLNYkNMaXo84OK09bV

Air System Equipment Air Filters and Cleaners American AirJFilterCompany Inc. 673 Central Avenue, Louisville, Ky. Representatives in Principal Cities Dust Engineering--Dust Engineering is that branch of applied science which deals with the origin, nature and characteristics of the small solid air-borne particles called "dust," and the development of methods, processes and apparatus for its control or elimination. The American Air Filter Company, Inc., has had an important part in advancing the science of Dust Engineer ing. The efforts of its Re search and Engineering Staff for the past twelve years have been devoted exclusively to the study of dust problems and the development of a complete line of air cleaning equipment for modern air conditioning, building venti lation and the control of pro cess dust in industry. American Air Filter pro ducts, therefore, not only embody the knowledge ac cumulated from years of con stant research and the ex perience gained from design ing, building and applying thousands of air filters, but are backed by ample technical and financial resources to in sure their outstanding posi tion in the Dust Engineering field. Products--American Air Filters are available for every condition, with operating characteristics and efficiencies to suit specific problems. In general, there are two distinct types based upon the "viscous used for the removal of dust, dirt, bacteria and other foreign matter from the air and are applied to general ventilation, modem air con ditioning, process dust con trol; for air compressors and Diesel Engines; mill motors, turbo-generators and other electrical applications; and for air or gas under pressure to remove entrained oil, moisture and dirt. A irmal Type PL-24 Filter Air Filters In Air Con ditioning--Filtered air is today recognized as essential in modern air conditioning. There are other important factors which contribute to our comfort such as tem perature, air movement and humidity, but science today emphasizes the prime neces sity of pure air for health and efficiency. Air cleaners have, of course, always been considered an integral part of large central systems. These are usually of the fully automatic type such as the American Auto matic Self-cleaning filterorthe self-cleaning Electro-Matic. There are now available to manufacturers of unit air conditioners moderate priced, unit filters such as the Renu filter, the Throway filter, and other types of filters illu strated on this page. The Renu filter is an Throway Air Filler entirely new departure in air filter construction. It con film" and "dry mat' sists of a permanent metal principles. Each type is frame provided with a re made in several styles movable cover and renew which differ in method of able filter pad. The cover operation, servicing, space required and initial cost to meet the various con ditions encountered in air cleaning problems. A dis cussion of various filter types will be found in the Technical Data Section under "Air Cleaners." Air filters are generally Standard Viscous Unit Filter 940 American Air Filler Co., Inc. Air System Equipment Air Filters and Cleaners is easily removed without the use of tools, and filter pad can be lifted out and replaced with a new one at very small expense. The Throway filter, as the name implies, is de signed to be discarded after it has served its maximum period of usefulness and re placed with a new filter unit. The Filter pad is enclosed in a perforated cardboard con Three Types of Panels --MV, MS and DD--Are available with the MultiDuty filter. Type MV is the designation for Multi- Panel armored panels with "V" or low resistance spacing: Type MS signifies Multi-Panel armored panels with "S" or high efficiency spacing: and Type DD in dicates Double-Duty diestamped louvre panels. tainer which makes it pos Electro-Matic Air sible to readily dispose of Filter--Incorporates elec the dirty filter by burning it. trical precipitation as an There is probably no sin integral function of an auto gle item which costs as little matic self-cleaning viscous and may mean as much in filter to obtain a higher the design of an air con ditioner as air filtration. American Automatic Self-Cleaning Filter over-all efficiency in the col lection of the finer dust These units are furnished in particles and smoke. In any dimensions or shapes combination, these two desired--usually in units methods of cleaning air not handling 400 cfm and from only give the highest effi 2 in. to 4 in. thick. They ciency in dust removal but are usually made in the offer operating advantages following sizes--20 x 20 in., found only in the automatic 16 x 25 in. and 16 x 20 in. self-cleaning filter. High cleaning efficiencies Standard Viscous Unit can be secured, with a re --The American Unit Air sistance to air flow ranging Filter incorporates the time from Fi6 in. to % in. water tested unit principle of con gauge. struction. Each unit con The American MultiDuty Self-Cleaning Air Filter--Is a development of AAF Engineers in which the best features of the former Multi-Panel and sists of a standard steel frame and interchangeable cell equipped with auto matic latches to facilitate removal for cleaning and recharging. Double-Duty filters, have Airmat Filter Dry Type been incorporated in a single --The filtering media in this unit to obtain the combined type is the Airmat'sheet, a advantages of both types of ed surfaces, they will be dry filter mat composed of construction. trapped in the semi-tacky thin sheets of gauzy, cellu The use of thermoplastic coatingand cause blemishes. finishes for refrigerators, This trouble can be elim stoves, automobiles, and inated only by enclosing other metal products has the finishing room and in created the need for clean stalling a filtered air supply air in finishing rooms. This system with sufficient ca- type of finish is hardened by . parity to provide a constant baking, so the product on supply of clean air in excess which it is used must be pro of the volume exhausted by tected from dust and dirt the spray booths. from the time it is sprayed High efficiency air filters until it leaves the oven. are needed for this service Spray booths exhaust to minimize rejects and do- large quantities of air, and overs. The automatic self- if this air is drawn from cleaning filter has proved other parts of the plant, it the most practical type be will contain considerable cause of its ability to main dust and dirt. If dirt and. tain a constant, uniform air dust particles are permitted volume with the minimum to settle upon freshly spray- of attention. lose tissue. The Airmat sheets are supported in screen pockets mounted in a unit frame of box-like con struction. These unit frames can be set up to meet any capacity requirement or space condition. Airmat sheets are renewable--their life depending on dust con ditions and hours of service. Airmat filters are used both for comfort and indus trial air conditioning. In the latter field they are particu larly well adapted for the recovery of valuable dusts and for abating the dust nui sance prevalent in so many industrial plants. 941