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Fans American Goolair Corporation COOLING AND VENTILATING FAN SYSTEMS 3604 Mayflower Street, Jacksonville, Florida PRODUCTS Silent Reversible Belt Drive Cooling and- Ventilating Fans for homes, stores, offices, factories, etc. Quiet, high speed direct drive fans. DDIFFERENTIATE clearly 1between cooling and venti lating. Cooling requires complete air changes as rapidly as every half minute to every minute and onehalf; ventilation requires air changes only every two to five minutes, depending on the building. Coolair has pioneered home cooling by air circulation. One of the outstanding advantages of COOLAIR ventilating fans is that they will deliver large quantities of air under free delivery with small horsepower and, consequently, low operating cost. Elimination of costly and unnecessary duct systems will often more than pay for the COOLAIR equipment. It is impor tant to provide ample exhaust and intake opening to avoid re stricting the air volume. Net free air passage area should never be less than area of fan. For maximum quietness free area should be enough larger than fan to assure a grill velocity of not more than 760 fpm. Typical Coolair Home Coding and Ventilating . Installation t Standard Type--Front View .Diameters Six to Nine Feet Performance Data on Request Description COOLAIR Belt Drive Fans meet the ventilating and cooling requirements of any size building. They are just as efficient when blowing in as when exhausting. Thp V-belt drive permits use of standard electric motors operating at the most efficient speed, and easily replaced in event of motor trouble. Slower speed motors are costly, difficult to replace and less efficient. With simple exchange of a motor the COOLAIR unit can be converted from a silent, slowly turning residence unit using a small motor, to a high speed industrial unit using a large motor. With a reversible motor, air can be blown into or exhausted from the building at will. Air can be pulled from the cool side of the building in the morning and the fan reversed when the sun moves to the opposite side in the afternoon. 942 American Coolair Corporation Fans Capacities and Weights--Coolair Belt Drives Fan Size Hp. Watt# per Hour Fan R.P.M. Cu. Ft. Air per Min. "1/6 190 427 2B t '/. 260 582 3250 4450 2'/iB 3B ' '/, tX tt Vz "'/. tX lift 300 413 420 460 570 507 300 305 420 340 570 385 800 446 5750 6400 7000 7800 8700 9800 11000 Type "B"--Front View Over-All Dimensions (In.) 3'/2B 4B 4'/2B 3B *X t Vz t y tn " Vz t Vi ttl ttl'A t V'Ai ti tti'/i m Vi ti ti'/2 tt2 tt3 . 420 570 600 1060 570 800 1085 1450 570 800 1085 1450 1900 800 1085 1450 1900 2850 268 290 350 392 259 277 306 369 194 225 260 286 329 195 211 251 277 324 11200 12100 14600 16300 15800 17000 18800 22500 17000 19700 22700 25000 28000 23000 25000 29600 32800 38000 Standard type frames. Note: Depth Approximate. Very Quiet. tQuiet. ftlndustrial. Data In accordance with Standard Code Test. American Society of Heating and Ventilating Engineers. Advantages Coolair Direct Drive Fans (1) Low initial cost. Great air delivery . per dollar of power. (2) Economical operation. Use of a small motor at the most efficient speed. (3) Quiet performance. Great volumes of gently moving air without objectionable noise or drafts. (4) May be equipped with reversible motors to exhaust or blow in at will. (5) Air volume controlled by means of two-speed pulley pn smaller units. (6) Rubber insulated motor support. Adjustable to belt tension. (7) Equipped with SKF ball bearings in dustproof, grease-packed housings. (8) Easy to install. The steel blades and frame are durable, yet light in weight. (9) Standard motors. Enclosed when specified. No vent holes are necessary to keep them cool. (10) Blades are individually mounted, inexpensive to replace. (11) Type "B" units, when equipped with ball bearing motors, are suitable for operation in any position. (12) Blades of Type "B" belt drive units are non-overloading. (13) Residence units are light, spring suspended for ultra-quiet operation. Coolair Residence Unit and Spring Suspei I1 Coolair Direct Drive Data on Request Covered by U. S. Patent No. 1,855,660, designed for maximum air per horsepower with minimum noise. Type "B" Direct Drive COOLAIR Fans are made in four sizes. At 1200 rpm for residence kitchens, small stores, etc.^At 1800 rpm for cooling, drying; for removing dust and fumes. Motors totally enclosed, long service types. The 1/6 h'p and larger are ball bearing, will operate in extremes of position, temperature and humidity. Cushion mountings. ion covered by U. S. Patent No. 1,992.112. 943