Selected Category: Direct-Drive Centrifugal Upblast Exhaust Ventilators
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My ventilator isn't moving as much air as I anticipated. Why?
Direct-Drive Centrifugal Upblast Exhaust Ventilators
a) The system resistance could be too high. Check system for proper operation of backdraft or control dampers or obstruction in duct work. b) The wheel may be running backwards. Correct rotation. c) There may be a damper that is closed. Inspect and repair damper. d) Your duct sections may be loose fitting permitting air loss. Check for secure connection where duct sections are joined. If necessary, use duct tape at seams for sealed closure.
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Why is my exhaust ventilator not working?
Direct-Drive Centrifugal Upblast Exhaust Ventilators
a) You may have a blown fuse or breaker. Replace or repair. b) Motor may be defective. Replace or repair. c) Ventilator may be incorrectly wired. Shut power OFF and check wiring for proper connections. d) The electricity may be turned off. Contact local power company.
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Why is my motor overloading and shutting off?
Direct-Drive Centrifugal Upblast Exhaust Ventilators
a) The motor may have a shorted motor winding. Replace motor. b) The wheel may be rotating in the wrong direction. Check that motor is wired correctly. c) The power source may be over/under line voltage. Contact your local power company.
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