| Tenderall Fan Co. now offers a new design of a | | | | * Spark resistant and explosion proof construction |
| centrifugal general ventilating fan - Square Fan, in direct | | | | * Safety drive guards |
| drive and belt drive configurations. Arrangement 4 | | | | * Extended grease tube fitting |
| direct drive square fans are ideally suited for a wide | | | | * High temperature fan construction with a shaft cooler |
| range of clean-air applications reuiring a tight footprint. | | | | assembly and high temperature paint |
| Typical uses include pneumatic conveying, product | | | | * Flanged inlet and outlet |
| drying, process cooling, and exhaust on clean-side of | | | | * Stainless steel construction of SST 316, SST 304 or |
| dust collection systems. | | | | SST 347 stainless alloy are available for corrosive |
| Some design features of the CB Square Fans include: | | | | applications |
| - Ten sizes from wheel size 10" to 30" | | | | Tenderall Fan Co. Square Fans incorporate |
| - Capacities up to 30,000 CFM airflow @ 20" WG | | | | non-overloading BI impeller desings: the motor can be |
| pressure | | | | sized for the operating horsepower of the fan and not |
| - Choice of backward inclined, airfoil and backward | | | | oversized, thus increasing motor efficiency. Heavy |
| curve wheel | | | | gauge spinning inlet with airflow diverter permits |
| - Four discharge configurations | | | | smooth air flow and close wheel tolerances. |
| - Narrow-width design permits higher speed and | | | | Three different wheel designs on CB SQB Square |
| pressures | | | | Fans provide the widest choice in applications suitability, |
| The following accessories are avilable: | | | | efficiency, sound, and cost. All of them feature the |
| * Clean-out door - available as a quick opening latch | | | | backward inlcinged non overloading horsepower |
| type door that swings open on hinges after cam | | | | chracteristic, where the horse power curve reaches a |
| levers have been turned, or flash bolted type with | | | | peak and then decreases even as air flow increases. |
| closely spaced studs to keep door securely sealed | | | | This feature allows maximum brake horsepower |
| with Neoprene foam tape gasketing | | | | calculation and motor selection that prevents electrical |
| * Shaft seals or Teflon shaft hole closures | | | | system overloading even if system pressure changes. |
| * Outlet damper - single or multi blade, parallel blade or | | | | True aerodynamic airfoil blade shape allows stable |
| opposite blade designs, manually operated or complete | | | | operation from wide open to closed off; ideal for clean |
| with mounted electric or pneumatic actoator, for on / | | | | iar applications such as building ventilation with variable |
| off or modulating air flow control | | | | air volume system control or clean industrial gas |
| * Inlet screen | | | | handling. Aerodynamic single surface blade shape of |
| * Base rails with rubber-in-shear or spring type vibration | | | | backward curve wheel offers alternative selction |
| isolators | | | | points to the Airfoil wheel and also provides stable |
| * Inlet volume control with variable inlet vanes - | | | | operation from wide open to closed-off. Flat, single |
| external or nested in the inlet cone, for manual or | | | | thickness backwardly inlined plades are suited for |
| automatic air flow control | | | | applications from clean air to those where dust and |
| * Housing drain - tank flange furnished in scroll of fans | | | | limited material is present in the airstream and where |
| with down blast discharge, half couplings in housing | | | | airfoil shapes are not recommended due to material |
| drive side on all other discharges | | | | build up that closes unbalance and vibration. |