Document 2jKmO27bY3R17ZDLJ9OgRBKea

i Air System Equipment Air Filter* Farr Company Manufacturing Engineers Los Angeles California FAR-AIR FILTERS* for all types of industrial use HERRINGBONE CONSTRUCTION FAR-AIR STANDARD PANEL FILTER For Ventilation For Grease Starling static pressure E a S-S E S i MO o -- >. o. > 5o . au C.F.M. CAPACITIES OF STANDARD FILTERS BASED ON VELOCITY USED is'iar 16*i25* 20*120* 20W *46 *90 4** 476 519 56* 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 114$ 1275 1400 1530 1655 1780 1910 2035 Far-Air filters' Herringbone design, which.is a special cirmped wire type of construction, allows these filters to load progressively, which permits a dirt holding capacity two or three times greater. Each filter can handle 50 per cent more air with the same blower power, thus one-third fewer filters are needed to do the same job. No special equipment is needed for cleaning ... a pressure hose and cold water. Far-Air filters can be cleaned in place. Of paramount importance to heating and refrigeration engineers is the fact that Far-Air Filters provide a filter area equal to the fin coil area. This special feature eliminates clumsy V-shaped ad ditions on vent ducts usually necessary with other type filters. Based on our recommended face velocity of S19 fpm, Far-Air filters deliver 50 per cent more air with the same blower power. Filters are all metal, permanent construc tion .. . Installation of Far-Air Filters, ef fects a saving not only in initial costs but maintenance as well--you need only % of the filter area, with a Far-Air filter. AIR FILTER TEST Farr Company has originated a simple procedure for testing air filter in place in order to determine the degree of efficiency. Write for information regarding this test. Trade Mark registered. PROGRESSIVE LOADING As entering orifices of Far-Air Herring bone Construction Filters are loaded,'air direction changes, flowing past the front loaded surface and progressively loading the clean screen mesh that remains. Greater free area permits a larger dust load with lower pressure drop. The small difference in pressure drop when a Far-Air Filter is loaded from when it is clean maintains a constant balanced air flow in the air distribution system. For full information about other types of FAR-AIR FILTERS, write: FARR CO., Dept.H VG, 2615 South west Dr., LOS ANGELES 43, CALIF. 1024 Air System Equipment a4;'/cSe,s Raytheon Manufacturing Company Commercial Products Division Waltham 54, Mass. &xce//*nce in fflec/lonicA ioxee/Zmce in S/^cirCttid Clean air as supplied by Electronic Air Cleaning reduces heating and cooling costs; reduces cleaning and redecorating costs; improves worker efficiency; improves product quality; and provides better conditions in which to work or relax. Only electronic air cleaning efficiently removes airborne particles as small as 1/250,000 in. in diameter. RAYTHEON PRECIPITATORS A COMPLETE LINE OF ELECTRONIC AIR CLEANERS For industrial and commercial appli cations. INDUSTRIAL Built up cell-type units for installation in ventilating and air conditioning systems. Fully automatic, semi-automatic or manual washing. Capacities 1200 cfm up. See Bulletin DL-P-503. RESIDENTIAL The Raytheon Home Precipitator , Semi-automatically and fully matically washed. Capacities 1200 and 1800 cfm. See Bulletin DL-P-509. auto PACKAGED UNITS For Industrial, Commercial and Resi dential Installations:-- Packaged, self-contained units. Fully automatic, semi-automatic, and manual washing. Capacities 300, 1200 and 1800 cfm. See Bulletin DL-P-505. The new, fully automatic Raytheon Pre cipitator washes and dries all ionizers and collector plates, reapplies adhesive, shuts itself off. Operates without shut-down period--requires no cleaning maintenance whatsoever. In the picture above, baffle doors have been opened and louvres re moved from the automatic washing unit to show construction details. NOTE THESE IMPORTANT FEATURES Ease of installation.. Minimum maintenance. Minimum resistance to air flow. Economy of Operation. Flexibility--a size for every application. Quality products used throughout. . 1025