The lack of water in the pump is due to the following reasons: 1. The depth of the flooded water inlet is not enough. Inhaling the air in the pump can increase the length of the water inlet pipe. 2, the inlet pipe leakage, should be fastened to the interface or plug the leak. 3, there are water and other debris in the water inlet pipe or impeller, should be cleared to stop. 4. If the lift is too high, reduce the pipe fittings, reduce the resistance of the inlet pipe or adjust the pump type. If the rotation speed is insufficient, adjust the speed ratio or adjust the tightness of the belt. If the suction range is too high, reduce the installation height or reduce the suction line. loss. 5. If leakage reduction rings or impellers wear excessively or partially, they should be updated. 6, lack of input power, low speed, should increase the supporting power. 7. The gate valve is not open enough or the check valve is blocked and should be opened or removed. 8. If the packing box leaks, tighten the gland or replace the packing.
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