Document X89wdNdnR7xKj7j8qO49M9p64

Air System Equipment Air Filters and Cleaners Westinghouse Electric & Manufacturing Co. Edgewater Park Precipitron Department Cleveland, Ohio THE PRECIPITRON* First Commercially Practical Electrostatic Air Cleaner The Westinghouse PRECIPITRON is the first commercially practical electrostatic method of removing dirt, dust and other air-borne impurities in ventilating and air conditioning systems. The PRECIPITRON--more efficient than mechanical filters --removes microscopic foreign matter as small as 1/250,000 of an inch in diameter-- even freeing the air of tobacco smoke. Typical six-cell PRECIPITRON instal lation capable of handling up to 4500 cfni (I) cells; {) Power Pack. FOR MASS AIR GLEANING JOBS The PRECIPITRON provides a com plete answer to mass air cleaning jobs in all Commercial, Industrial, and Public Build ings using forced ventilation or air con ditioning duct systems. Applications -- The PRECIPITRON protects documents, decorations, merchan dise and reduces cleaning costs in com mercial and public buildings. It protects machines, stocks and production in indus trial plants. In all applications it reduces maintenance costs and improves working conditions. It is used in office buildings, theatres, banks, telephone exchanges, libraries, hos pitals, laboratories of all kinds, hotels, department stores, art galleries--in fact, wherever dirt removal is important. Advantages--More efficient than me chanical filters. Safe. Easily installed. Non-clogging, and non-varying resistance. Easily cleaned. Listed by Underwriters' Laboratories and passed by them on stand ard flame tests for fire hazard on duct in stallation. Sizes--The PRECIPITRON is avail able, complete for installation, to accommo date from 300 cfm (for a single 18 in. cell) to any desired volume through multiple cell arrangements. Cells come in two sizes--18 in. x8J^ in. x23% in. and 36 in. x 8H m. x 23M in. For a 90 per cent efficiency, the 18 in. and 36 in. cells are rated at 300 and 600 cfm respectively. For 85 per cent efficiency, ratings are 375 and 750 cfm. Two sizes of Power Packs are available. The Type S for installations up to 12 36-in. cells and Type L for 12 to 50 36-in. cells. Non-Varying Resistance--The PRE CIPITRON has no screens to clog--and its resistance is always constant. Once each month accumulated dirt is washed down the sewer with a hose. Information--Westinghouse will gladly provide complete information about the PRECIPITRON. Address your requests to Section G, Precipitron De partment, Westinghouse Electric & Manu facturing Company, Edgewater Park, Cleveland, Ohio. Trade-mark Registered in U.S.A. (See also Pages 826-827) 876 Air System Equipment Cleaning Materials Oakite Products, Inc. General Offices: 36 E. Thames St., New York, N. Y. MATERIALS . . . METHODS . . . SERVICE CLEANING Established 1909 Representatives in all Principal Cities of the United States and Canada Specialized OAKITE Materials .for: Slime Control in De-Scaling Re-circulating Systems. Condensers, Compressors, Cleaning Air Filters, Jacket Water Coolers, Lube Oil Coolers, Diesel and Gas Engine Heat Exchange Equipment. Cooling Systems. Controlling Slime Growths Control of bacteria and slime growths in re-circulating water supplies is in expensively established with Oakite Airefiner. A dry, non-volatile, white powder, completely soluble, it prevents formation of slime accumulations and their unpleasant odors. Economical to use . . . one lb to each 300 gallons of water usually recom mended. Prevents Equipment Corrosion Oakite Airefiner prevents corrosion of eliminators, air washing chambers, spray heads, etc., because it main tains water at a point suf ficiently alkaline to count eract the tendency of the water to become acidified. In addition, it gives wash waters greater Wetting-out action, thus making dirt removal more complete. Water lines are also kept free of scale. Free Booklet Gives Details Cleaning Air Filters For cleaning viscous type filters, hot or cold solutions of recommended Oakite material may be used. Short immersion of filter, followed by rinse, thoroughly removes dust, dirt, soot, lint and pollen without injuring filtering medium or frame metal. Steam cleaning methods also available. Full filtering capacity is eco nomically restored. FREE 16-page booklet gives details. De>Scaling Equipment Safely When scale and rust deposits form in jacket watercoolers, ammonia con densers, compressors or other water-cooled me chanical refrigerating or similar equipment . . . heat transfer is reduced, opera ting efficiency impaired. These insulating deposits may be effectively, safely removed with Oakite Com pound No. 32 simply by soaking with or circulating recommended strength of Free Booklet solution. Does not harm base metal. Method is easy, economical. New 20-page booklet gives successful, widely used formulas and directions for this and such other work as de-scaling and cleaning Diesel, gas and gasoline engine cooling systems, lube oil coolers, other heat exchange equipment. A copy is yours FREE. Nation-Wide Service Because Oakite cleaning materials are backed by a binding GUARANTEE and supplied through a nation-wide organiza tion of Service Representatives throughly experienced in their application, users are assured of obtaining the economies and advantages, they provide to .effectively promote maximum performance of airconditioning and mechanical refrigerating equipment. 877 /