In terms of maintenance, what should never be overlooked in a single-phase motor?

Checking the power supply connections is a critical maintenance task for a single-phase motor because the reliability and efficiency of the motor largely depend on the integrity of its electrical connections. Poor or faulty connections can lead to voltage fluctuations, overheating, or even motor failure. Ensuring that all connections are secure and free of corrosion is essential for the safe operation of the motor, as this helps to maintain proper power supply and performance.

While inspecting the rotor for wear is also important, it primarily focuses on the mechanical aspect of the motor, which, while necessary, does not directly impact the continuous operation of the motor in the same immediate way that ensuring firm and proper power supply connections do. The other options—changing the paint color and adjusting aesthetic features—do not contribute to the operational reliability or safety and are simply cosmetic changes that should not take priority in maintenance efforts.