... :CE/GS.UL.CUL.PSE.EK.SAA.BS Our pump are all tested and examined one by one before selling ... 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, ... Use in the water 3, Don't catch the pump by cable4, Pump work water temperature below 45°C5, Keep the water ...