What should be monitored when checking the performance of an electric motor?

When assessing the performance of an electric motor, monitoring the bearing temperature is crucial. Bearings are integral components of electric motors, and their function directly impacts the overall efficiency and lifespan of the motor. Excessive heat in the bearings can indicate inadequate lubrication, misalignment, or other issues that could lead to premature failure or operational inefficiency. By keeping an eye on bearing temperatures, technicians can implement preventive maintenance measures, address potential problems before they escalate, and ensure that the motor continues to operate smoothly.

The start-up time is important but does not provide a complete picture of the motor's ongoing performance. Monitoring the physical size of the motor may not yield relevant performance data, as size alone does not indicate operational efficiency or health. Additionally, while knowing the age of the motor can provide insights into its expected lifespan, it does not assist in assessing its current performance conditions. Overall, focusing on the bearing temperature directly correlates with the motor's reliability and functionality, making it a critical parameter for Performance Monitoring.