www.howden.com Belt Driven Mixed Flow Fans 500 to 1600mm Diameter Bulletin MXF 09-08
A product of the latest computerized design techniques, improving upon already proven designs, the MX-PLUS Mixed Flow fan is designed to save the user cost both in terms of energy consumption and a long trouble-free life. Lower operating speed for a given performance level is the key to this feature, and our MX-PLUS delivers! The MX-PLUS features bearing lubrication via extended lubrication lines and an externally adjustable motor base. Leak proof rolled flanges assure the fan s integrity. Shafts and bearings are sized for long and robust service life. While intended for HVAC applications, the MX-PLUS has a heavy-duty construction, which makes it a favourite for industrial applications as well. MXP Mixed Flow.docx Page 2 of 21
Mixed Flow MX-P Performance Data MX-P Coverage Chart AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 3 of 21
MX-P 500mm AMCA 30. Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 4 of 21
MX-P 560mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 5 of 21
MX-P 630mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 6 of 21
MX-P 710mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 7 of 21
MX-P 800mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 8 of 21
MX-P 900mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 9 of 21
MX-P 1000mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 10 of 21
MX-P 1120mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 11 of 21
MX-P 1250mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 12 of 21
MX-P 1400mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 13 of 21
MX-P 1600mm AMCA 301 Recommended motors based on fan speeds indicted on the chart. MXP Mixed Flow.docx Page 14 of 21
Dimensions for Sizes 500-630 MXP Mixed Flow.docx Page 15 of 21
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Dimensions for Sizes 710-900 MXP Mixed Flow.docx Page 17 of 21
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Dimensions for Sizes 1000-1250 MXP Mixed Flow.docx Page 19 of 21
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MX-Plus Advanced Mixed Flow Fans Fans shall be MX-PLUS Advanced Mixed Flow Fans, as manufactured by Howden American Fan Company, Fairfield, Ohio. Fans shall be Arrangement 9, V-belt driven with fixed or adjustable pulleys. The fan impeller shall be mounted on a separate shaft and the bearings supported within a tube centered in the fan casing. Performance Fans shall be tested in accordance with AMCA 210 test code for air moving devices and shall be guaranteed by Howden American Fan Company to deliver rated published performance levels within permitted tolerances. Fans shall be tested in an AMCA-approved laboratory for air and sound performance. Construction Fan casing shall be of welded 10-gauge ASTM A- 1011 hot rolled steel in sizes 50 through 90 and 7- gauge hot rolled steel in sizes 71 through 125. The casing joints shall be continuously welded. Drilled inlet and outlet flanges are standard and shall be integrally rolled or solid welded to insure a leak-proof casing. Furnish an inspection port in the casing to observe fan rotation. Guide Vanes Fan casing shall be fitted with aerodynamically designed stationary straightening guide vanes on the discharge side of the impeller. Vane design shall be integrated with casing design so as to maximize airstraightening effect. Vanes shall be precisely located and welded to both the fan casing and the bearing housing and act to straighten the tangential component of the air movement downstream of the impeller blades, thereby converting rotational energy losses to pressure, improving efficiency and static pressure capability and reducing power requirements. Impeller Impeller shall be made of fabricated steel of all welded construction. Fan impeller shall be designed by means of Computational Fluid Dynamics (CFD) software for maximum efficiency. Conversion (guide) vanes shall be matched to impeller design for improved efficiency and decreased noise output. Shaft Shafts shall be AISI 1040 or 1045 cold drawn steel round shapes, accurately turned, ground, polished, and checked for accuracy and straightness. Shaft size shall be selected for the first critical speed of at least 1.25 times the maximum speed. Bearings Bearings shall be heavy duty, grease lubricated, antifriction ball or spherical roller, self-aligning, flange block type and selected for a minimum average bearing life (AFBMAL-50) in excess of 200,000 hours at the maximum load. All bearings shall be provided with prefilled factory extended lubrication lines fitted with grease fittings terminating at the casing exterior. Drive Fans shall be equipped with a (fixed/adjustable) pitch V-belt drive selected to operate at the required RPM. The V-belt drive is to consist of cast iron sheaves and anti-static conducting belts. Drives shall be selected with a (1.3-1.5) service factor based upon the required motor horsepower of the fan. The complete fan shaft and bearing assembly is mounted within a steel fabricated inner cylinder. Motor Motors for fans shall be manufactured in accordance with current applicable standards of IEEE and NEMA and, where applicable, shall meet at least current EPACT standards for efficiency level. Motors shall be foot-mounted, NEMA standard (ODP, TEFC, Explosion-Proof), continuous duty, ball bearing type with class (B or F) insulation and of cast iron construction when commercially available. Finish The entire fan assembly, excluding the shaft, bearings and impeller, shall be thoroughly cleaned before application of finish coat. Prior to assembly, all steel parts shall be primed and then painted with a finish coat of semi gloss alkyd enamel shall be applied to a dry film thickness of 2.0 mils minimum and oven-dried. Enamel shall be mercury-, lead- and chromate-free. Accessories When specified, accessories shall be provided by Howden American Fan Company to maintain onesource responsibility. Factory Run Test All fans with motors and drives mounted by Howden American Fan Company shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Records shall be maintained and a written copy shall be available upon request for a minimum of seven (7) years. MXP Mixed Flow.docx Page 21 of 21
www.howden.com At the heart of your operations Howden people live to improve our products and services and for over 160 years our world has revolved around our customers.this dedication means our air and gas handling equipment adds maximum value to your operations. We have innovation in our hearts and every day we focus on providing you with the best solutions for your vital operations. Howden American Fan Company 2933 Symmes Rd Fairfield OH 45014-2099 Tel: 1-866-771-6266 Fax: 1-513-870-6249 Email: haf.sales@howden.com Howden Group Limited. All rights reserved. 2016 Howden and the flying H logo are registered trademarks belonging to Howden Group Limited