Clean the motor. Remove the dust and oil sludge on the outside of the motor frame in time. If there is a lot of dust in the usage environment, it needs to be cleaned once a day.

2. Inspect and clean the motor terminal blocks. Check whether the wiring screws of the junction box are loose or burned.

3. Check the screws of each fixed part, including the anchor bolts, end cover screws, bearing cover screws, etc., and tighten the loose nuts.

4. Inspect the transmission device, check whether the pulley or coupling is loose or damaged, whether the installation is firm, and whether the belt and its connecting buckle are in good condition.

5. For the starting equipment of the motor, it is also necessary to promptly clean the external dust and dirt, wipe the contacts, check whether there are any burn marks at each wiring part, and ensure that the grounding wire is in good condition.

6. Inspection and maintenance of bearings. Bearings should be cleaned and the grease or lubricating oil replaced after being used for a period of time. The time for cleaning and oil change should be determined based on the working condition of the motor, the working environment, the degree of cleanliness, and the type of lubricant. Generally, it is necessary to clean and replace the grease once every 3 to 6 months of operation. When the oil temperature is high, or when the environmental conditions are poor and there is a lot of dust, the motor should be cleaned and the oil changed frequently.

7. Inspection of insulation conditions. The insulation capacity of insulating materials varies with the degree of dryness, so it is very important to check the dryness of the motor windings. Factors such as a humid working environment for motors and the presence of corrosive gases during operation can all damage electrical insulation. The most common type is winding grounding fault, that is, insulation damage, causing the live parts to come into contact with the metal parts such as the casing that should not be live. This kind of fault not only affects the normal operation of the motor but also poses a threat to personal safety. Therefore, during the operation of the motor, the insulation resistance should be frequently checked, and it is also necessary to pay attention to whether the grounding of the motor casing is reliable.

In addition to the regular maintenance of the motor as mentioned above, a major overhaul should be carried out once a year after operation. The purpose of a major overhaul is to conduct a thorough and comprehensive inspection and maintenance of the motor, replenish the missing or worn components of the motor, completely remove the dust and dirt inside and outside the motor, check the insulation condition, clean the bearings and inspect their wear. Discover problems and deal with them in a timely manner. Generally speaking, as long as it is used correctly, maintained properly and faults are dealt with promptly, the working life of high-voltage motors is very long.