Pump automatic control circuit diagram

The utility model relates to an automatic controller for a water pump, which consists of an electrical control panel, a water level controller, a water pump, and a reservoir. The water level controller consists of a fixed bracket and a connecting rod sleeve. The connecting rod sleeve is provided with a sliding slot, the floating ball connecting rod is inserted into the connecting rod sleeve. The floating ball connecting rod is equipped with a lower water level contact post. The upper end of the connecting rod sleeve is equipped with a normally open contact switch K1 and a normally closed contact switch K2. The lower end of the connecting rod sleeve is equipped with a normally open contact switch K1 and a normally closed contact switch K2. There is a normally open contact switch K3, and the four lines of the three switches K1, K2, and K3 are connected to the 4 terminals respectively. The electrical control panel consists of a main switch, a contactor, an indicator light, a hand start button, and 4 contactors. The circuits A′, B′, C′ and D′ are respectively connected to the corresponding positions on the terminals. They have simple structure, convenient maintenance and reliable operation.