Can the AC axial fans of the MRS Series be rotated in reverse?
This is not recommended as the fan blades are not designed for reversing.
Reversing is possible by changing the wiring, but blade efficiency is significantly reduced and the following problems may occur.
- The life of the winding is significantly affected by the temperature rise of the winding. In addition, the thermal protector may be activated.
- The blade fastening is designed in the normal direction of rotation. Reverse rotation may cause loosening of screws etc., resulting in a serious accident.
Are there ways to reduce the noise of axial fans?
Use fans with slow or variable speed.
The slower the fan speed, the lower the noise level.
If the air flow is sufficient, it is effective to use a low-speed type fan in advance.
Another effective method is to deliberately reduce the rotation speed by employing variable speed fans.
AC axial fans of the MU Series do not have a capacitor, how are they rotated?
By placing a shading coil in the motor winding, it plays the same role as a capacitor in shifting the power supply phase.
We use shaded-pole motors in some of our smaller fans, such as the MU Series.
Is there a way to save energy on equipment by reducing the power consumption of the fans in the control cabinet?
The following methods are effective in reducing the power consumption of fan motors.
Use low-power-consumption fans
Fans equipped with a brushless motor ensure low power consumption.
Use fans with variable speed
The slower the fan speed, the lower the power consumption.
If the air flow is sufficient, variable speed fans can be employed to deliberately reduce the rotation speed.
Can fans be driven in combination with inverters?
This is only possible for some three-phase power input type axial fans. Single-phase power input types cannot be driven in combination with inverters.
Is it possible to change the wiring of the centrifugal blower so that inlet and outlet are reversed?
This is not possible. Changing the wiring does not change the inlet and outlet. The relationship between the air flow in and out is determined not only by the direction of rotation of the runner, but also by the inclination angle of the runner blades, which reduces both air flow and static pressure.
