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Specifications IMPELLERS Impellers have blades of true aerofoil section cast in aluminum silicon alloy, accurately balanced for all speeds and possessing non-overloading power characteristics.
CASINGA simple robust long casing of welded construction with end flanges and stiffeners. The casing carries an extra adjustable platform for the foot mounted motor. Access doors in the side of the casing are provided as standard for all AFX fans.
DRIVEType AFX fans are indirect driven by an externally mounted motor through V ropes. Double bearings are mounted in one piece cast iron housing supported centrally in the fan casing by high tensile steel ties. The EN-8 shaft supports the impeller and the fan V pulley. Pulleys may be changed for duty variations but we should always be consulted. BEARINGSTaper roller bearings are used contained in a one piece bearing housing within the fan casing. The bearings are grease packed and lubrication tubes are carried to the outside of the housing.
FINISHStandard finish is sprayed light gray enamel while the impeller is sprayed silver aluminum paint.
AIR FLOW Loading Direct chart picture [Fig- 203/205/207] The direction of airflow for standard type AFX fans is Airflow A in accordance with the diagram. The fans may be mounted horizontally or vertically in accordance with the figures of construction.
OTHER AXIAL FAN TYPES
The Multivent range of axial fans includes those designed for main, booster and auxiliary mines ventilation incorporating the special features required for this application. GUIDE VANE FANSCertain high duty requirements may be met by the use of fans having stationery guide vanes usually mounted immediately downstream from the impeller.
TWO STAGE FANSFor high working pressure beyond the reach of the normal single stage fans, we are able to supply two stage axial fans. Construction and specification are generally similar to that for the normal fans and incorporate the same features and advantages but two impellers are mounted in series on the drive shaft with a set of guide vanes after each impeller. Two stage fans are available for direct motor drives or for indirect driven fans.
CONTRA ROTATING FANSAlso for producing high pressure in excess of the normal single stage fans, two fans with impellers of opposite hand and rotation may be bolted together in series to form a contra-rotating unit. This is an extremely flexible system since the output may be varied by idling one stage as well as changing pulley ratios to effect speed changes. Contra rotating fans are available for direct motor drive or as indirect driven fans.
MARINE TYPE FANSFans can be provided with marine features for arduous operations under these conditions. Application include the ventilation of engine and boiler rooms and accommodation and cargo spaces. Outputs of the marine fans are identical with the normal industrial types and are of similar construction but with extra features to suit the specification of marine application. A marine direct driven axial fan is also manufactured with the swing out casing for accessibility to the motor and impeller.
BIFURCATED FANSThe ICEBERG range of bifurcated fans has been designed for applications handling obnoxious fumes, dust-laden air and gases at normal or high temperatures. This range of fans is made in steel plate for normal and high temperatures and also for the highly corrosive fumes. This arrangement is ideal for accessibility to the motor that is open to atmosphere and works therefore in the lower ambient temperature. SILENCERS A range of silencers is available for use with axial fans.
AIR FLOW The direction for airflow for standard type AFX fans is Airflow A in accordance with the diagram. The fans may be mounted horizontally or vertically in accordance with the figures of construction.
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