When using ore grinding mill equipment, if the motor fails to start normally, the grinding mill will also fail to start, causing the production line to halt. Below, we outline how to identify the reasons why the grinding mill motor cannot start.
1. Significant Efficiency Decline: When the grinding mill's operational efficiency drops, and thorough inspection and maintenance of core components like grinding rings and rollers fail to yield noticeable improvement, the issue likely stems from insufficient motor power or a motor malfunction. After prolonged operation, motor resistance increases due to factors like heat generation. This not only elevates energy consumption but may also prevent the motor from sustaining sufficient power to the mill or maintaining normal operational efficiency. Replacing the motor can resolve this issue.
2. Abnormal Noise: If the mineral grinding mill emits unusual sounds during operation, carefully inspect the motor's condition. Motor bearings may deteriorate from prolonged use, causing abnormal noises during operation. Additionally, damaged internal fan blades or loose components can also generate unusual sounds. If these issues persist after basic repairs, continued operation risks friction between the rotor and stator, potentially burning out the motor—requiring immediate replacement.
3. Abnormal Temperature Rise: Excessive load, poor ventilation, or internal short circuits can cause the motor temperature to rise abnormally. This not only accelerates the aging of the motor's insulation materials and reduces its service life but also poses a risk of motor burnout. If the motor temperature remains elevated after improving ventilation conditions and adjusting the load appropriately, it indicates a severe internal fault. The motor must be replaced immediately to prevent more serious accidents.
4. Gradual Difficulty in Starting: If the ore grinding mill becomes increasingly difficult to start—or occasionally fails to start altogether—and external factors like power supply or control circuits have been ruled out, the issue likely stems from motor-related problems. These include aging or short-circuited motor windings, damaged starting capacitors, or persistent instability after repairs. In such cases, the motor should also be replaced immediately.
