The Industrial Choice. Model PB. Belt Driven. Model PB Direct Drive PRESSURE BLOWER. Model PB

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1 The Industrial hoice. Model P elt Driven Model P Direct Drive PRESSURE LOWER Model P ULLETIN 904 March 999

2 Model P Pressure lowers Pressure blowers provide medium pressure air for cooling, ventilating and exhaust systems handling dust, materials or corrosive fumes. eatures Direct drive or belt driven Wheel diameters from 8" through 2" low capacities to 275 M Static pressure to 0" w.g. Temperature to 600 (with modifications) Wheel ast aluminum wheel furnished as standard. Suitable for air, light dust, and mild chemicals in acidic ph range. or resistance to more severe abrasion, chemicals and high temperatures, specify an aluminum-bronze Dura alloy wheel. abricated steel and stainless steel wheels are available upon request. ccessories Weather over and elt Guard The weather cover protects the motor, drives, and bearings from the elements. vailable on rr. 9 fans with fractional horsepower motors only. The belt guard is available for all belt driven arrangements and sizes. omplete mounting details are required for rrangement fans. Motor over The motor cover protects the motor from the elements. vailable on rr. 4 fans only. Drain " standard drain welded to housing at lowest point. langed Inlet and Outlet The flanged inlet is a circular plate welded flush with standard slip inlet. Holes are provided. The flanged outlet is welded flush to the outlet. Holes are provided for matching the duct flange. Typ. Typ. Shaft Seals (belt driven units only) Elastomeric rotary seal Rides against a heavy Teflon wear plate. spare seal is provided as standard. This seal is suitable for operation up to 300. eramic felt Elements are encased between housing drive side and metal retaining plate. eramic felt inserts may easily split for field installation and maintenance. This seal is best suited for 30 to 600 operation. These seals minimize leakage around shaft opening but are not gas tight. Heat an elt driven heat fan (rr. & 9) includes aluminumbronze Dura wheel and 240 aluminum two-piece heat slinger. rrangement 9 includes a motor heat shield. Suitable for temperatures to 600. Direct drive heat fan (rr. 8) onsult factory. Includes aluminum-bronze Dura wheel and 240 aluminum two-piece heat slinger. Suitable for temperatures to 600. Special lloys Stainless steel fan housing and wheel luminum fan housing and wheel Dura aluminum-bronze alloy wheel OD (4) 5 6" Dia. Hole SIZE OD /2 5 6" Dia. Holes (Ref.) () Req'd. 0 Ga SIZE Spark resistant construction To reduce danger of explosion. Type ll aluminum fan housing and wheel rrangements, 8 and 9 Type luminum wheel and nonferrous closure plate around the shaft opening oatings Special corrosion resistant coatings available upon request. 2 erovent ulletin 904

3 Drive rrangements rrangement Versatile and rugged V-belt drive arrangement with the motor mounted separate from the fan base. Maximum temperature of standard fan is 300. Maximum temperature of heat fan is 600 *. Specify M motor position designation (see below) and fan RPM when ordering fan complete with drives and motor. rrangement 9 ompact V-belt drive arrangement with the motor mounted on the fan support base. This arrangement will accept a full range of motor frame sizes through 84T. Maximum temperature of standard fan is 300. Maximum temperature of heat fan is 600 *. Standard construction is with the motor on the right when facing the end of the shaft. Indicate motor and mounting description (right or left) when ordering. * Heat fan includes an aluminum-bronze Dura alloy wheel, 240 aluminum two-piece heat slinger, and heat shield. The heat slinger protects against transfer of heat through the shaft to the bearings. rrangement 4 The most compact and least expensive direct drive arrangement with the wheel mounted directly on the motor shaft. rrangement 4 fans are available in a limited number of models. Minimum motor frame size is 48 for the 8" and 56 for the 0" and 2". Maximum temperature of standard arrangement 4 fan is 80. or direct drive heat fans (rrangement 8 only), please consult the factory. Motor Positions The drawing at right illustrates the M motor position standards for rrangement fans. The location of the motor is determined by facing the drive side of the fan and designating the motor position by letters W, X, Y, or Z. Illustrations reprinted from M Publication 99 Standards Handbook, with the express written permission from the ir Movement & ontrol ssociation International, Inc., 30 West University Drive, rlington Heights, IL Discharge rrangements lockwise ngular Discharges at 45 Degrees G G G a b b a c d c d b Top Horizontal ottom Horizontal Upblast Downblast Top ngular Down ottom ngular Up Top ngular Up ounterclockwise ngular Discharges at 45 Degrees G G b a a b d c G b c d Top Horizontal ottom Horizontal Upblast Downblast Top ngular Down ottom ngular Up Top ngular Up *In H position, Size 2 and 2 with flanged outlet, flange will extend below baseline. ** DH position with flanged outlet requires special construction. ontact factory for details. See dimensions on page 7. 3 erovent ulletin 904

4 Performance Data rrangement 4 Direct Drive N SIZE MOTOR " SP 3 4" SP " SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP HP RPM M HP M HP M HP M HP M HP M HP M HP M HP M HP M HP M HP P P P P P P P P P P P P P rrangement & 9 elt Driven P8 Inlet: 6" O.D. Outlet: 0.03 Sq. t. ased on air density of lbs. per cu. ft. M OV " SP 3 4" SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP Performance shown for direct drive and belt driven fans is with inlet and outlet ducts. HP does not include transmission losses. 4 erovent ulletin 904

5 rrangement & 9 elt Driven P0 Inlet: 7" O.D. Outlet: 0.26 Sq. t. ased on air density of lbs. per cu. ft. M OV " SP 3 4" SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 0" SP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP P0 Inlet: 7" O.D. Outlet: Sq. t. ased on air density of lbs. per cu. ft. M OV " SP 3 4" SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 0" SP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP Performance shown for direct drive and belt driven fans is with inlet and outlet ducts. HP does not include transmission losses. 5 erovent ulletin 904

6 rrangement & 9 elt Driven P2 Inlet: 7" O.D. Outlet: 0.58 Sq. t. ased on air density of lbs. per cu. ft. M OV " SP 3 4" SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 0" SP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP P2 Inlet: 7" O.D. Outlet: Sq. t. ased on air density of lbs. per cu. ft. M OV " SP 3 4" SP " SP 2" SP 3" SP 4" SP 5" SP 6" SP 7" SP 8" SP 0" SP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP RPM HP Performance shown for direct drive and belt driven fans is with inlet and outlet ducts. HP does not include transmission losses. 999 Twin ity an ompanies, Ltd., erovent ll rights reserved throughout the world. ulletin illustrations cover the general appearance of erovent products at the time of publication and we reserve the right to make changes in design and construction at any time without notice. 6 erovent ulletin 904

7 Dimensional Data rrangement L, M, and D are outside dimensions. G H M D M/2 E L 2 Dia. Holes (4) Req'd R rrangement 9 L, M, and D are outside dimensions. H G D M/2 7 8 M E L 2 Dia. Holes (4) Req'd R rrangement 4 *Maximum motor overhang for any size motor up to frame 82T is 3". Weather cover extends 3 3 4" (increases HH dimensions by 3 3 4"). D Weather over M/2 HH* M 7 8 L G (4) Dia. Holes RR Dimensions (in.) Tolerance: ± 8" SIZE & SHT KEYWY SE WHEEL D E G H L M R HH* RR a** b** c** d** DI. HOLES DI x 8 x x 8 x x 8 x x 8 x x 8 x 2 8 Dimensions should not be used for construction unless certified. **See Discharge rrangements, page 3. rrangements & 9 7 erovent ulletin 904

8 PROPELLER NS TUEXIL & VNEXIL NS ENTRIUGL NS & LOWERS ROO VENTILTORS INDUSTRIL IR HNDLERS IR MKE-UP IERGLSS NS USTOM NS EROVENT Twin ity an ompany Trenton Lane N Minneapolis, MN Phone: ax: