Canada Fans Industrial Blowers and Fans has a long and well established record of producing a full range of large industrial fans, blowers and belt drive and direct drive propeller fans for commercial and industrial applications. Our Engineering and Product Design Departments have expert professionals who can assist customers develop custom designed air handling and conveying systems that meet and exceed their critical industrial fan and blower applications. Regardless of your ventilation requirements, rely on Canada Fans Industrial Blowers & Fans to deliver the best and most effective air movement systems and solutions possible.
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GENERAL
Centrifugal fan shall be designed and manufactured by Canada Fans to ensure smooth operation. Canada Blower fan wheel shall be radial with tapered shroud and backplate steel or aluminum wheel construction. Unless otherwise directed, fan arrangement, motor location, support base, rotation and discharge are as shown on the layout drawings.
PERFORMANCE
Fan ratings shall be based on tests made in accordance with AMCA Standard 210. Flow shall be actual volumetric flow at the fan inlet. Fan static pressure is defined as static pressure at fan outlet less total pressure at fan inlet. Standard inlet density is to be taken as 0.75 lb/ft3 with corrections for temperature, elevation, inlet static pressure, gas composition and humidity as defined in the schedule. Fans shall be selected to operate to the right of the peak static pressure at the given speed to ensure stable performance. Fan brake horsepower shall be equal to or less than specified at the given flow and fan static pressure.
SOUND
Canada Blower fans manufacturer shall provide sound power level ratings for fans tested and rated in accordance with AMCA Standards 300 and 301. Sound power ratings shall be in decibels (reference 10-12 watts) in eight octave bands. Sound power levels will be corrected for installation by the specifying engineer...dBA or sound pressure levels only are not acceptable.
CONSTRUCTION
Fan housings are to be heavy -- min. 10 gauge, ¼” minimum bearing pedestal, continuously welded construction with flanged and punched outlet. Housings with lock seams or spot welded construction are not acceptable. Outlet dimensions to match standard ANSI flange and bolt pattern sizes.
BEARINGS (belt driven fans)
Fan bearings are to be heavy duty, grease lubricated, precision anti-friction self-aligning pillow block design. Bearings shall be designed for a minimum L-10 life of 40,000 (series 5900 L-10 is 100,000) when rated at the fan's maximum cataloged operating speed.
SHAFT (belt driven fans)
Fan shafts are to be ASTM A-108 steel, grade 1040/1045, precision turned, ground and polished. Grade 1018 steel is not acceptable. The shaft's first critical speed shall be at least 143% of the fan's maximum operating speed.
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PAINT
All fan surfaces are to be thoroughly prepared prior to painting using a combination of washing and hand and power tool cleaning as required in SSPC-SP-3. After cleaning, all surfaces (except wheel) are to be coated with industrial grade alkyd enamel. Surfaces of bolted components not accessible after assembly shall be coated and allowed to dry prior to final assembly. Primer only will not be accepted.
BALANCE & INSPECTION
All fans shall be precision balanced to ISO quality grade 2.5, report to be submitted with the maintenance manual. A final inspection by a qualified inspector prior to shipment is required to include: scope of supply confirmation, balance, welding, dimensions, bearings, duct and base connection points, paint finish and overall workmanship.
ACCESSORIES
Accessories shall be provided as called for in the plans and specifications. Standard accessories include:
Motor to be NEMA Design B 3/60/460-575V-3600 rpm, high efficiency TEFC 1.15 SF V-Belt Drives - Variable Speed/Constant Speed with min 1.5 SF Belt Guard or weather cover required Extended lubrication lines (nylon, copper or stainless steel) with fittings terminating in an accessible area.
Additional Features that may be required:
Split pillow block bearings Companion Flange (angle companion flange bolted to the fan inlet or outlet flange) Inlet or Outlet screen heavy gauge wire on 2” centres Above 300°F, Shaft cooling wheel required Above 500°F, high temperature aluminum paint required Vibration Isolation - Spring - Rubber-In-Shear Spark Resistant Construction –
AMCA “A” All parts of the fan in contact with the air stream non-ferrous material AMCA “B” Non-ferrous wheel and aluminum rubbing ring where shaft passes through Housing with shaft seal AMCA “C” Aluminum inlet cone and Aluminum rubbing ring Manual Cut knife gate
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