1.The medium temperature should not be over 40oC, the density 1200Kg/m3, and the PH value within 5-9.
2.During running, the pump must not be lower than the lowest liquid level
3.Rated voltage 380V, rated frequency 50Hz. The motor can run successfully only under the condition the deviations of both rated voltage and frequency are not over 5%.
4.The maximum diameter of the solid grain going through the pump has not to be larger than 50% of that of the pump outlet.