No water after the pump starts
1. There is no liquid in the pump.
2. Suction pipe leakage
3. Impeller and pipe blockage
4. Pumps to the wrong
5. Suction height exceeds the specified requirements (4-5m)
6. To pump the liquid inside the tank
7. Eliminate air leakage
8. Check and clear the line
9. Check and correct motor wiring.
10. Reduce the geometry of the pump installation height or reduce the length of the suction pipe
The power is too large
1. Head out of range
2. Pump body, pump cover and the gap between the impeller is too small
3. Reduce the pump pressure head
4. Adjust the clearance to the specified range
Sealing device leakage too much
1. The static ring and the movable ring in the mechanical seal device
2. Rubber sealing ring aging
3. Water containing solid impurities
Spring relaxation mechanical seal device
1. Repair or replace to meet the requirements
2. Replace the rubber sealing ring
3. Install the filter
4. Replacement spring
Displacement reduction
1. Speed reduction
2. Impeller or pipeline blockage
3. The resistance of the pipeline is greater than the specified value.
4. Impeller and pump body, pump cover between the gap is too large
(1) To increase the speed to the rated value
(2) Check and clean up the debris, garbage
(3) Check the installation of the pipeline, as far as possible to reduce the elbow or valve parts.
