Pumps are widely used and common general machinery in water supply equipment. Sometimes, pumps may not be able to pump water during use. What are the reasons that affect the pump's inability to pump water? Below, the editor will talk about this matter.
 

1. Not filled with water or the air in the inlet pipeline is not fully extracted;
 

Solution: Continue watering or remove the air from the inlet pipe.
 

2. The required head for actual working conditions is too high, and the pump head is too low to meet the requirements of the working conditions;
 

Solution: Replace the water pump with a higher head.
 

3. Serious air leakage in the suction pipeline or sealing device;
 

Solution: Block or repair the leaking area, tighten or replace the seal.
 

4. During on-site installation, the inlet and outlet directions of the pipeline water pump are reversed or the motor wiring is incorrect. The rotation direction of the water pump is incorrect;
 

Solution: If the wiring of the motor in the import and export direction is incorrect, switch any two wires and change the direction of rotation.
 

5. The speed of the water pump is too low;
 

Solution: Increase the speed of the water pump.
 

6. The bottom valve is rusted, and the inlet or impeller channel is blocked;
 

Solution: Repair the bottom valve, remove debris, and add a trash rack at the inlet.
 

7. The imported pipeline is too long and the suction stroke is too large;
 

Solution: Lower the installation height of the water pump, or reduce the elbow valves on the suction pipeline, and shorten the length of the pipeline.
 

8. The impeller is severely damaged, and the clearance between the leakage reducing ring is worn out;
 

Solution: Replace the impeller and leak reducing ring.