... .1,Please keep the water is clean2,Cleaning the water pump every week. Do not mover the shaft.3,When the pump can not ... work:a, please check the electrocircuit b, not any lees at the input. c, check the rotor Attention1, Power off before ... in the water 3, Don't catch the pump by cable4, Pump work water temperature below 45°C5, Keep the water is clean air cooler ...