Maintenance and care of Mining Electric Motor

1. Regular inspection
Appearance inspection: Regularly inspect the appearance of Mining Electric Motor to check whether the shell is damaged, deformed or corroded. Check whether the nameplate of the motor is clear and complete. The nameplate contains important parameters of the motor, such as rated power, rated voltage, rated current, etc., which are of great significance for maintenance and fault diagnosis.
Ventilation and dust prevention inspection: Check whether the vents of the motor are unobstructed and whether the dust filter device is blocked. If the vents are blocked, it will affect the heat dissipation of the motor, causing the motor temperature to rise and reducing its service life. When the dust filter device is blocked, it should be cleaned or replaced in time to ensure its dust prevention effect.
Electrical connection inspection: Check whether the electrical connections of the motor such as the power cord and grounding wire are firm. Loose electrical connections may cause poor contact and generate electric sparks, which will not only affect the normal operation of the motor, but also may cause safety accidents. At the same time, check the insulation resistance of the motor, and use an insulation resistance meter to measure the phase-to-phase insulation and insulation resistance to ground of the motor. The values ​​should meet the specified requirements.
2. Lubrication and maintenance
The bearings of Mining Electric Motor need to be lubricated regularly to reduce friction and wear. According to the operation of the motor and the requirements of the instruction manual, determine the lubrication cycle and the type of grease to be used. During the lubrication process, pay attention to adding grease in an appropriate amount to avoid too much or too little grease. Too much grease may cause the motor to heat up, and too little grease will not have a good lubrication effect.
3. Fault diagnosis and treatment
Overload fault: If the motor is overloaded, it will be manifested as excessive motor temperature and excessive current. First, check the load to see if there is a mechanical fault that causes the load to increase suddenly. If it is a problem with the motor itself, you may need to check whether the winding is short-circuited or whether the insulation performance of the motor has decreased due to long-term overload. Take corresponding measures for different reasons, such as repairing mechanical faults, replacing short-circuited windings, or re-insulating.
Electrical faults: electrical faults such as motor failure to start and abnormal speed. For situations where it cannot start, check whether the power supply is normal, including whether there is electricity and whether the voltage meets the requirements. At the same time, check whether there is a fault in the control circuit of the motor, such as whether the contactor is working properly and whether the relay is damaged. Abnormal speed may be caused by changes in the magnetic field strength of the motor, armature winding failure, etc., and needs to be diagnosed with professional testing equipment and corresponding repairs.