Listen carefully to the voice of the DC Motor is normal. Agricultural motor is running, the motor should be noted that the loud noise, according to the sound operation of the motor identification. Normal, the motor sound evenly, no noise. If the agricultural motor abnormal sound, usually have both mechanical and electrical reasons.

Difference is: plug in the power, abnormal sound there, cut off the power, abnormal sound is still there, as mechanical failure, electrical failure otherwise. The most common mechanical failure is bearing failure, the main bearing clearance is too large or serious wear and tear, lack of oil or grease caused by improper selection, then they need to be cleaned or replaced the bearing, the Hydraulic motor during operation to ensure good lubrication , general motors run around 5000h, the grease should be added or replaced.

Practice has proved that the vast majority of burned motor, the reason mostly control equipment is not working properly due. Motor control equipment to appear as phase or phase starting running contactor contact arcing, sparking, etc.

The noise generated by electrical fault is called electromagnetic noise, the most common motor phase operation, when the motor phase operation, the speed will drop, and an abnormal "buzzing" sound. If you are running too long, it will burn out the Single Phase Motors. Missing running problem is mainly caused by power supply circuit, such as power lines a phase wire, or a motor phase winding disconnected. To prevent the motor phase operation, the first phase running to note that the anomalies, and immediately removed, followed by an important motor for the lack of protection should be installed.