CHECK AMPERAGE - Measure the amperage to the motor terminal. If high, find out if the pump impeller was recently replaced (it could be sized incorrectly). Remember, motor horsepower times the service factor = total horsepower. Total horsepower must be equal to or greater than the impeller rating. If the impeller is too large for the motor, it will be trying to push more water than the motor can handle and the motor will overload, get hot, and shut down.