One of the primary variables in determining the life expectancy of your motor is heat. Heat is often the final variable causing pre-mature aging and breakdown of your insulation system. Another component of your electric motor, overlooked for heat related failure is the rotor. The rotor experiences extreme heating during every start causing natural heat related aging of the steel, copper, and aluminum. Motor design engineers know this and consider 3,000 starts a normal life expectancy. So, if you are not tracking the number of starts, maybe you should start tracking them. Knowing this could help your decision making when you are considering a repair vs. a replacement later in the motor’s life.
Thanks to PdMA for this tip.