Roof Ventilator is installed on rooftops for exhaust and ventilation. The variety of installation environments determines the special materials and construction used for the centrifugal fan. Roof ventilators are available in a wide range of types and are used in many applications. They can be selected to meet different requirements for application, airflow, pressure, and noise levels.

Under normal conditions, a roof ventilator may reach a relatively high temperature during operation, but this should remain within the normal range. Friction between the equipment’s components generates heat, causing the housing temperature to rise; however, not every instance of excessive temperature is normal. Roof Ventilator is installed on rooftops for exhaust and ventilation. The variety of installation environments determines the special materials and construction used for the centrifugal fan.

A roof ventilator should be equipped with a device to prevent reverse airflow after shutdown. Under pressure, the fan runs at high speed, considerably increasing the airflow velocity inside the air guide cylinder. Reverse rotation of the centrifugal fan can seriously affect motor startup, and excessive starting current may damage the motor. Roof ventilators should be designed to provide reliable protection against water, blowing snow, and dust. Unlike rain, snow and dust can enter the fan not only from above; when outdoor wind speeds exceed a certain level, they may also enter from below.