1. The hot water pump import and export valve is not open, import and export pipeline obstruction, abortion impeller blocking. Solution to remove obstruction.
2. Motor running direction is wrong, the motor phase speed is slow. Adjust motor direction, strong motor connection.
3. Hot water circulation pump suction pipe leakage. Tighten the cover and remove the air.
4. Pumps are not filled with liquid, the pump cavity has air. Open the pump cover or open the exhaust valve, exhaust air.
5.Import and export water shortages, high suction valve, Water Leakage. Stop check and adjust (the connection of the water pipe and the use of the suction process is prone to this phenomenon).
6. Pipeline resistance is too large, improper selection of centrifugal pump. Reduce the curve of the pipeline, re select the pump
Failure of the hot water pump flow problem
1. Hot water circulation pump inlet and outlet valve is not open, import and export pipeline obstruction, abortion impeller blocking. Solution to remove obstruction.
2. Pipes, hot water circulating pump impeller partial obstruction, scale deposition, the valve opening is insufficient. Removal of obstruction, re adjust the valve opening.
3. Centrifugal pump voltage is low. Voltage regulator.
4. Impeller wear. Replace impeller.
5. Exceed the rated flow rate. Regulating flow off small outlet valve.
6. Centrifugal pump suction process is too high. Reduce the suction process.
7. Pump bearing wear. Replace bearing.
Vibration causes of failure of hot water circulating pump
1. Pipe support instability. Solid line.
2. Liquid mixed with gas. Improved suction pressure exhaust.
3. Produce cavitation. Vacuum reduction.
4. Bearing damage. Replace bearing.
5. Motor overload heating operation. Regulating flow off small outlet valve.
Hot water circulation pump fault motor heating reasons
1. Hot water circulation pump flow is too large, overload operation. Close small outlet valve
2. Rub. Check exclusion.
3. Hot water circulating pump motor bearing damage. Replace bearing.
4. Lack of voltage. Voltage regulator.
Hot water circulation pump leakage reason
1. Hot water circulation pump mechanical seal wear. Replacement.
2. Pump body with sand holes or broken. Welding repair or replacement.
3. Sealing surface is not smooth. Dressing.
4. Mounting bolts loose. Fastening。
