"AC Fan" Like most fans, roof fan in use, we also need for maintenance in order to better maintain the effect, the effect of ventilation fans can be able to be guaranteed, since the roof fan and other types of fans are different, some of the details in the installation are also different, then when we were on the roof fan installation, you need to how to reduce fan vibration it? How can we improve the effectiveness of maintenance of roof fans it? These efforts can help us reduce vibration phenomenon fan used in the installation, in these details, the most important thing is to install the fan balance, so that the fan is always in a stable installation environment, it is effective to install a fan base .