Restoring electricity to the pump at the main switch usually causes it to actuate immediately. Pay attention to two indicators. The water pressure gauge on the pump should immediately rise off zero and register a steady pressure climb. The loud, raspy sound of the dry pump mechanism should quickly become muffled as water pressure fills the system. If these fail to occur, or last only for a short duration until the system loses pressure again, repeat the priming procedure. It’s not unusual to perform two or more consecutive priming procedures before sufficient water is present in the system to generate adequate suction.