Document 0g1EL25nvDJyO1NpO0zaBve4O

Air System Equipment . At paters Farr Company Manufacturing Engineers Chicago Los Angeles New York FAR-AIR FILTERS FOR ALL TYPES OF INDUSTRIAL USE FAR-AIR STANDARD PANEL FILTER For Ventilation Grease Paint Ink Lint Copocity in c.f.m . per tq. in o f face area Starting static pressure Q. CFM CAPACITIES e OF STANDARD >. 2" TYPE 44 FAR-AIR FILTERS > O o 16-120- 16-125- 20-i20- 20-125" 346 390 433 476 519 563 606 650 693 2.40 2.70 3.00 3.30 3.60 3.90 4.20 4.50 4.80 .06" .07" .09" .10" .12" .14"- .16" .19" .20" 625 700 780 860 935 1015 1090 1170 1250 795 895 995 1095 1195 1290 1390 1490 1590 800 900 1000 1100 1200 1300 1400 1500 1600 1020 1145 1275 1400 1530 1655 1780 1910 2035 HERRINGBONE-CRIMP DESIGN Far-Air Filters are permanent, all metal herringbone-crimp, zinc electro-plated steel wire screen construction. The alter nate layers of flat and herringbonecrimp.fine wire screen results in Lower Pressure Loss (0.12 in. W.G. clean at 519 fpm). Greater Air Delivery (1200 cfm at 519 fpm through 20 x 20 x 2 in. unitpermitting equal filter and coil area and eliminating most V-bank installations), Higher Efficiency (improved perform ance up to velocities as high as 750 fpm), Larger Dirt Holding Capacity (from 30 per cent to over 125 per cent more filter ing media per unit), and Easier Cleaning (cold water hosing cleans thoroughly. Far-Air Filters can be cleaned-in-place . . . they do not have to be removed from their holding frames). Based on the recommended net face velocity of 519 fpm, Far-Air Filters de liver 50 per cent more air with the same blower power. ' This effects a saving in both initial costs and maintenance costs as only % the filter area need be installed and maintained. .SELF-WASHING FILTERS PROGRESSIVE LOADING As entering orifices of Far-Air Filters are loaded, air direction changes, flowing past the front loaded surface and progres sively loading the clean screen mesh that mains.. Greater free area per mits a larger dirt load' with : lower pressure toss. These filter units will handle any cfm requirement and are completely auto matic. Washing, drying and re-oiling cycle is controlled by electric timers whose intervals may be adjusted accord ing to operating conditions. Oil and water are flushed away immediately, eliminating messy sumps and attendant fire hazard. Units also have an automatic fire control feature as further protection. Installation is easy with practically no maintenance required. For full information about Far-Air products write: Farr Company, Dept. HVG, 2615 Southwest Drive, Los An geles 43. California. 1146 Air System Equipment Air Filters and Cleaners Raytheon Manufacturing Company Waltham 54, Massachusetts Sales Enginebeing Offices: Boston, Chicago, Cleveland, New Orleans, New York, San Francisco, Seattle, Washington, D. C., and Wilmington, Calif. Manufacturers Agents In All Principal Cities RAYTHEON &ece//*ttcm in 4oect%oneA SERVING THE NATION'S ENGINEERS IN THE FIELD OF ELECTROSTATIC AIR CLEANING RAYTHEON PRECIPITATORS remove virtually all dust, smoke, soot, lint, oil mist and other air borne dirt--including particles as fine as 1/250,000th of an inch, as proved by tests developed by the National Bureau of Standards. RAYTHEON SERVICE begins with spe cialized engineering knowledge and assist ance offered to architects and engineers planning installations . . . extends through Raytheon service offices in all principal cities to contractors making the actual in stallations--and continues on throughout the years so that users may be assured of all the advantages designed and built into the equipment. CELL-UNIT TYPE Raytheon Precipitators, designed for installation in air circulating, air conditioning or other air duct systems, can be built up to any desired capacity. EASE OF INSTALLATION achieved by cell unit construction is illustrated by view of partial assembly of 20,000 cfm Industrial Precipitator shown top right. Light weight ionizer and collector cells are readily in serted or removed from opposite sides of rigid frame. CELL- WASHING may be accomplished manually or semi-automaticaily as desired. The manual type*, which is most commonly used (see top right) can be washed efficiently by hand when the system is shut down. The semi-automatic type* (see lower right) au tomatically washes and applies adhesive without the necessity of shutting down the system. This type is also advantageous on large installations where systematic wash ing is required. < * Write for Manual Bulletin or Semi-auto matic Bulletin. 1147