Custom Blowers | Turbo Blowers
2300 SERIES CUSTOM BLOWERS For performance requirements greater than those of the standard 2300 Series Blowers (to flows of 100,000 ACFM and pressures to 60 OSI) , custom designed units are recommended. When flows and pressures become larger, designing a unit specifically for the duty (plus any required margin) saves both initial cost and energy .
SELECTION
The following information is required for proper selection of a custom blower by our engineering staff: — Flow at rating point, maximum required flow and volumetric turndown requirement —Pressure at rated flow and minimum pressure expected —Gas temperature (rated, minimum, maximum) — Site altitude - indoor/outdoor location —Gas source and gas composition when not air —Voltage and frequency of power supply — Type of motor enclosure, special features of motor if required — Class, Division, Group and Temperature code if installed in hazardous area
— Allowable noise level —Drive arrangement — Rotation and discharge position if known — Pipe size for inlet/outlet and adapters if required —Other special requirements
CONSTRUCTION Blower casings and pedestals are of plate gage carbon steel construction while impellers are primarily of appropriate high strength low alloy steel. Units are available in alloy construction for high temperature (over 800 degree F) or for other special application. When required to limit noise transmission through the blower casing, the casings are constructed with thicknesses of ¼ to ½ inch. In those rare cases where ½ inch plate construction does not provide sufficient attenuation, acoustic insulation blankets are provided as part of the blower package. Impellers are statically and dynamically balanced prior to installation in blower during assembly. Assuming compatibility with our electrical supply (200 HP and below), the entire unit is then test run and is subject to vibration analysis to assure that overall vibration does not exceed 0.15 inches / second filtered at operating speed. For units above 250 HP, after impeller is balanced, blowers are shop assembled, match marked and sufficiently disassembled to permit shipping and installation. Site assembly should in most cases be supervised by an experienced fan mechanic and a vibration survey of the assembled unit be performed (with trim balancing as necessary) prior to the unit being placed in service.
FEATURES
— Designed specifically for the application requirements , the 2300 Series Custom blower uses the most appropriate/ highest efficiency impeller design including radial blade, backward curved, and airfoil . Our designs include special low specific speed impellers for high pressure and low flow while operating at full load motor speeds. High efficiency de- signs not only save energy but reduce the acoustic output of the blower to a minimum. Directly connected designs (AMCA Arrangement 4) provide simplicity and minimal mainte- nance . Coupled designs (AMCA Arrangement 8 or 7 with inlet box) are incorporated on larger units where impeller characteristics do not lend themselves to mounting directly on the motor shaft. Other drive arrangements are available as are designs for a range of operating voltages and frequencies. — Designed primarily for use in industrial combustion applica- tions (including both forced draft and induced draft) but also applicable to many drying, heating and other process ap- plications with air up to 200 degrees F (units above 200°F to 1200°F use a 2600 Series blower). — Full array of accessories includes inlet boxes, inlet vane dampers, filters, silencers, inlet/outlet adapters, flexible sleeves and expansion joints, sound and thermal insulation, AC variable speed drives - these accessories are used to adapt and complete the installation to match the job-specific requirements.
Bulletin 2300 Page 7
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