What are the main aspects included in the periodic inspection of the electric motor?

In recent times, there has been a widespread global interest in acquiring electric cars due to their advanced and modern specifications, high safety levels, and various advanced features. These include the efficiency of their motors, which require less maintenance compared to fuel engines. However, this doesn’t eliminate the need for periodic care. Here are the key tasks to continuously examine the electric motor.

A set of necessary procedures to ensure the safety of the electric motor :

Here are some essential tips and steps to maintain the safety and efficiency of the electric motor. The electric motor stands out in that it doesn’t need to be running during the testing process. However, you should disconnect it if connected to the car before following the steps below.

Conduct theoretical examinations on the motor

There are many things to discover by simply conducting a theoretical examination of the electric motor. A thorough examination of the physical condition of the motor is necessary, ensuring that all information is recorded in the car’s test booklet. If an electric car is driven in a less clean environment, such as rough terrain, various signs may be found, such as corrosion or dirt accumulation on individual motor components. These should be addressed immediately to avoid potential issues like elevated temperature and resulting burning smells.

Verify the nameplate installed on the motor

Inspect the nameplate installed on the frame or fixed part of the motor. This metal label contains crucial information about the motor that is difficult to determine without it. The information usually includes the manufacturer’s name, motor model and serial number, rotor cycles per minute, horsepower rating, and other details necessary to establish motor test criteria and maintain its safety.

Maintenance checks on the commutator and brushes

Some electric motors have two parts in the rotor section: the commutator and carbon brushes. Examine them carefully, ensuring there are no signs of brush wear or damage. Brush issues can lead to problems in the motor switching process. To avoid this, you need to replace the brushes to restore the motor’s safety and function. Additionally, inspect the commutator for any cavities or scratches, as these signs indicate sparks in the brushes, potentially causing damage.

Furthermore, examine the motor mount, rotor, fixed part, and belts thoroughly. Replace any damaged or faulty parts to maintain the motor’s performance at its best.

Conduct a motor winding test

After examining various motor components, the next essential step is to test the motor windings. This test provides a better idea of any faults present in the motor windings. To prepare for the test, disassemble the motor, helping identify any damages. If signs of burning, smells, or cracks are discovered in the windings, there is a high possibility of severe and substantial damage. In such cases, consult your car dealer as soon as possible.

Check the efficiency of the bearings

Inspect the bearings responsible for supporting the rotation shaft, allowing it to rotate freely and smoothly. There are different types of bearings, including cylindrical and spherical. Regarding the test procedures, examine the bearings by placing the motor on a solid surface and rotating the rotor with one hand while holding the motor with the other. If any vibrations or noises occur, these are signs of damage, including dirt accumulation, poor lubrication, or wear. These damages can lead to an increased motor temperature, potentially causing it to stop or be exposed to severe risks. Therefore, address this issue promptly.

Examine the electrical run capacitor

Most capacitors are protected by a metal cover on the external side of the motor. Thus, remove this cover to access and inspect or test the capacitor. It’s worth noting that visual inspections may reveal oil leaks from the capacitor container, bulges or holes in the capacitor body, burning smells, or even smoke residues. All these signs indicate possible malfunctions that need to be discovered and addressed.

Ensure the efficiency of the car cooling fan

Verify that the cooling fan is securely mounted in the frame, and make sure it’s not obstructed by dust or other debris. The openings in the metal protective cover on the back should receive smooth and unrestricted airflow to prevent the motor’s temperature from rising, thus avoiding malfunction and damage.

Battery cooler

Lithium-ion batteries in electric vehicles require a cooling liquid to prevent overheating and the risk of fire. Therefore, regularly inspect and maintain the battery at the dealership according to the car’s maintenance schedule.

In conclusion, we have presented the essential steps necessary for your continuous periodic inspection. It is also important to remind you to visit maintenance centers for comprehensive car inspections and ensure its safety from time to time.

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