What is the reason why the pump does not deliver water? Follow the editor of UTB water pump for a simple understanding!
1. There is air in the inlet pipe and pump body
1. The pump is not filled with enough water before starting. Sometimes it seems that the filled water has overflowed from the vent hole, but the pump shaft is not rotated and the air is completely discharged, resulting in a little air remaining in the inlet pipe or pump body.
2. The horizontal section of the inlet pipe that is in contact with the water pump should have a descending gradient of more than 0.5% against the flow direction. The end connected to the inlet of the water pump is the highest, not completely horizontal. If it is tilted upwards, air will remain in the water inlet pipe, which reduces the vacuum in the water pipe and the water pump and affects water absorption.
3. The packing of the water pump has worn out due to long-term use or the packing is too loose, causing a large amount of water to be sprayed from the gap between the packing and the shaft sleeve of the pump. As a result, external air enters the interior of the water pump from these gaps, affecting To lift water.

4. Due to long-term potential underwater, the pipe wall has corroded holes, and the water level continues to drop after the pump is working. When these holes are exposed to the water surface, air enters the civil water inlet pipe from the holes.
5. There are cracks in the elbow of the inlet pipe, and there is a tiny gap between the inlet pipe and the water pump, which may cause air to enter the inlet pipe.
2. Low pump speed
1. Human factors. Some users arbitrarily equipped with another motor to drive because the original motor was damaged, resulting in small flow, low lift or even no water supply.
2. The mechanical failure of the pump itself. The impeller and the pump shaft fastening nut loose or the pump shaft is deformed and bent, causing the impeller to move too much, directly rubbing against the pump body, or bearing damage, which may reduce the speed of the pump.
3. Power machine maintenance is not working well. The motor loses its magnetization due to the burnt windings. Changes in winding turns, wire diameter, and wiring methods during maintenance, or failure to completely eliminate factors during maintenance can also change the speed of the water pump.
The above is the introduction of the editor of UTB water pump: about the reasons why the pump does not produce water.