Electrical motor maintenance tips for those looking to buy unused motor

Electric motors are widely used across industries. They are highly efficient devices, depending on operating conditions and the size of the motor. They do not use fuel like traditional motors. Moreover, electric motors function properly even when temperatures are below zero. However, just like any other machinery, electric motors need regular maintenance. If you are planning to buy motor online, you will find the following tips on electrical motor maintenance useful: 

1.  Check brushes and commutators 

To avoid costly motor repairs and unnecessary downtime, check the commutators and brushes when performing motor maintenance. If the pressure on a commutator is too much, the brushes are likely to either spark or make a lot of noise. During the inspection, it must be ensured that brushes, brush holders, commutator, and commutator bars are clean. If the brushes are worn out, it is best to replace them.

2.  Conduct a motor winding test 

A very important part of motor maintenance is conducting the motor winding test. If you see burn marks or cracks, conducting a motor winding test is a must.

3.  Check the bearings 

If the motor is vibrating or making noise, it could be a sign that something is wrong with the bearings. It could be because of poor lubrication and dirt buildup.

4.  Conduct vibration tests 

Vibration testing is used for preventative maintenance. This can help in reducing the chance of breakdowns. Vibration can reduce the efficiency of an electric motor. Some of the causes of vibration are : 

• Faulty sleeve ball bearings
• Too much belt tension
• Improper balance.

5.  Get infrared testing done as part of predictive maintenance 

Infrared testing detects thermal waves. It identifies potential maintenance issues that might lead to motor failure. Infrared testing has become quite popular as it doesn’t interfere with the motor’s operation.

6.  Keep all the records 

Keep detailed records of all preventive maintenance schedules and the repairs done. Maintaining records helps in better understanding of the equipment, identifying which issues need to be addressed, or determining which parts have to be replaced or repaired. 

7.  Perform a visual inspection 

It is important to visually inspect electric motors from time to time. During the inspection look for signs of corrosion and dirt. If the motor’s windings are emitting a burning smell, it’s a sign of overheating. Ensure that all components are dust-free and have not corroded. Dust and corrosion lead to internal problems. 

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