The average number of starts per day over a period of months or years infuences the life of the submersible pumping system. Excessive cycling affects the life of control components such as pressure switches, starters, relays and capacitors. Rapid cycling can aslo cause motor spline damage, bearing damage, and motor overheating. All these conditions can lead to reduced motor life.

The pump size, tank size and other controls should be selected to keep the starts per day as low as practical for longest life.

Motors should run a minimum of one minute to dissipate heat build up from starting current.