Typical applications for inline vane axial fans involve exhausting or supplying clean, ambient air. Greenheck's recommendation for continuous high temperature operation is 43° C (110° F) for direct drive vane axials, where the motor is in the airstream, and 93° C (200° F) for belt drive vane axials, where the motor is out of the airstream.For emergency smoke ventilation involving temperatures above 200° F, please contact us.
Obstructions in the duct system - closed dampers, closed registers, dirty filters, clogged coils
Obstructions in the fan inlet - elbows to close to the inlet, walls too close to the inlet
Duct design - improperly designed turning vanes, leaks in supply or exhaust ducts
Fan related - impeller running backwards, fan speed too low, impeller dirty or clogged, clearances between inlet cone and wheel cone are incorrect.