_O & M MANUAL - WEST LANE MOBILE HOME PARK

Home Browse Search

URAI-22 FLOW EQUALIZATION TANK BLOWER URAI-33 MAIN PLANT BLOWERS ROOTSTM Universal RAI Rotary Positive Blowers Frames 22 thru 718 OPERATING PRINCIPLE POSITION I POSITION 2 POSITION 3 POSITION 4 Two figure-eight lobe impellers mounted on parallel shafts rotate in opposite directions. As each impeller passes the blower inlet, it traps a definite volume of air and carries it around the case to the blower outlet, where the air is discharged. With constant speed operation, the displaced volume is essentially the same regardless of pressure, temperature or barometric pressure. Timing gears control the relative position of the impellers to each other and maintain �m-all but definite clearances. This allows operation without lubrication being required inside `�7e gas casing. OUTLINE DRAWING & DIMENSIONAL TABLE INLET 8 DISCHARGE CONNECTIONS r TOP DISCHARGE I C P TOP 1----- P, AX AX SHAFT I • Dpi T O R U D �� 'a} D2 - - -� I_- 9 ----'1 BOTTOM 1' q I I SHAFTRIGHT BOTTOM DISCHARGE DISCHARGE LEFT DISCHARGE J ` G E VERTICAL CONFIGURATION HORIZONTAL CONFIGURATION Drive Shaft Approx Frame Locatlon A 8 C 0 0' P P' R U Inlet 8 Keywaydisch. AX t Sim D D1 D2 Dia VA. 22 5.13 5.00 9.75 375 6.25 3.75 9.63 6.88 625 9.25 5.00 .625 .188 x .094 1.0 NPT 1.25 32 24 5.13 7.00 11.75 3.75 6.25 3.75 9.63 6.88 6.25 9.25 5.00 .625 .188 x .094 2.0 NPT 1.25 43 32 7.25 6.75 11.25 5.00 8.50 5.00 12.81 8.88 7.75 12.13 6.75 .750 .188 x .094 1.25 NPT 1.75 69 33 1 7.25 1 7.63 1 12.13 5.00 8.50 5.00 12.81 8.88 7.75 12.13 6.75 .750 .188 x ,094 2.0 NPT 1.75 1 74 36 7.25 10.00 14.63 5.00 8.50 5.00 12.81 8.88 7.75 12.13 6.75 .750 .188 x .064 25 NPT 1.75 702 42 8.00 7,25 13.00 6.25 10.25 6.25 15.06 10.63 8.75 13.63 8.25 .875 .188 x .094 1.5 NPT 2.00 88 45 8.00 10.00 15.50 6,25 10.25 6.25 15.06 10.63 8.75 13.63 8.25 .875 .188x .094 2.5 NPT 2.00 109 47 8.00 11.75 17.63 6.25 10.25 6.25 15.06 10.50 8.50 13.63 8.25 .875 .186 x .094 1 3.0 NPT 2.00 128 53 10.50 8.38 15.38 6.25 11.25 6.75 17,38 11,88 10.25 17.25 875 1.125 250 x .125 2.5 NPT 2.50 143 56 10.50 11.00 18.00 6.25 11.25 6.75 17.38 12.25 11.00 17.25 875 1.125 .250 x 125 4.0 NPT 2.50 170 59 10.50 14.00 21.18 6.25 11.25 6.75 17.38 12.25 11.00 17.25 8.75 1.125 .250 x .125 4.0 NPT 2.50 204 65 11.00' 10.00 1 18.38 8.75 14.75 8.75 21.63 15.13 12.75 19.75 11.75 1.375 .312 x .156 3.0 NPT 3.00 245 68 11.00' 13.00 21.38 8.75 14.75 8.75 21.63 15.13 12.75 19.75 11.75 1.375 312 x .156 5.0 PPT 3.00 285 615 11.00' 20.00W28.38814.75 8.75 2163 16.25 15.00 1975 11.75 1375 .312 x .156 6.0 FLG 3.00 425 76 1400" 11.751800 11.00 2613 2069 1938 2325 14.50 1.562 .375 x .188 4.0 NPT 350 400 711 14.00" 16751800 1100 2613 19.50 17.00 2325 14.50 1562 .375 x .188 6.0 FLG 350 530718 1400^ 23.7518.00 11.00 26.13 1950. 17.00 23.25 14.50 1.5621 375 x 1881 8.0 FLG 3.50 650 S -12K84 BASIC BLOWER DESCRIPTION Universal RAI blowers are heavy duty rotary blowers designed with detachable rugged steel mounting feet, which permit easy in -field adaptability to either vertical or horizontal installation requirements. Because of the detachable mounting feet, these units can be easily adapted to any of four drive shaft positions - right hand, left hand, bottom or top. The compact, sturdy design is engineered for continuous service when operated in accordance with speed and pressure ratings. The basic model consists of a cast iron casing, carburized and ground alloy steel spur timing gears secured to steel shafts with a taper mounting and locknut, and cast iron involute impellers. Oversized antifriction bearings are used, with a cylindrical roller bearing at the drive shaft to withstand V -belt pull. The Universal RAI features thrust control, with splash oil lube on the gear end and grease lube on the drive end. After standard tests, the unit is sprayed with a protective paint and boxed or placed on skids. Available accessories include driver, relief valve, inlet and discharge silencer, inlet filter, check valve, extended base, V -belt or flexible coupling and drive guards. DRESSER Roots