The main reasons why the fuselage temperature of fan equipment of roof machine exceeds normal value are as follows:
1. The motor moves out of phase or has wrong wiring;
2.Excessive system resistance or unreasonable fan selection leads to overload operation of the motor, which is caused by excessive pipe network resistance coefficient or unopened pipeline coefficient valve;
3. Low power supply pressure;
4. The motor bearing is damaged, and the fit clearance is small, which does not meet the requirements. In fact, the fan body is too high, which is also a serious problem, especially for axial fans and roof ventilator, which have important mechanical equipment. If there is a little abnormality, it will affect the normal operation of the whole machine, and people should pay attention to it.
