To maintain a TEFC motor, what is essential to prevent burnout?

To maintain a TEFC (Totally Enclosed Fan-Cooled) motor and prevent burnout, cleaning the outside of the motor housing is crucial. TEFC motors are designed to protect internal components from external contaminants and moisture, which can lead to overheating and burnout if not properly managed. Dust, dirt, and debris can accumulate on the motor housing, obstructing airflow and reducing the cooling efficiency.

By keeping the exterior clean, you ensure that the motor remains cool during operation. This is particularly important for the fan-cooling aspect of the motor design, as the fan relies on unobstructed airflow to dissipate heat effectively. Regularly cleaning the motor also helps identify any potential issues, such as leaks or signs of wear, before they escalate into larger problems that could lead to burnout.

Other options, while important for general motor maintenance, do not directly address the specific threat of overheating due to airflow obstruction as effectively as cleaning the outside of the motor housing does.