[Asia Pump Network News] Hot water circulating pump is a centrifugal pump, the use of temperature within 120 ℃, vertical and horizontal installation, hot water circulating pump mainly has the following faults: no water, lack of flow, noise Vibration, water leakage. Then Xiaobian for your details: Hot water circulation pump failure analysis and solutions Hot water circulation pump is not water causes and troubleshooting 1, hot water pump inlet and outlet valves are not open, out of the pipeline obstruction, liu production impeller obstruction. Solution, remove obstruction. 2, inadequate import and export of water supply, suction stroke is too high, leakage valve at the end. Shutdown inspection, adjustment (water pipe and pipelines with suction easy to use this phenomenon). 3, the pump is not filled with liquid, there is air in the pump chamber. Open the pump cover or open the exhaust valve and drain the air. 4, hot water circulation pump suction pipe leak. Tighten the sealing surface, remove the air. 5, the motor running in the wrong direction, the motor phase loss is very slow speed. Adjust the motor direction, sturdy motor wiring. 6, pipeline resistance is too large, improper selection of centrifugal pumps. Reduce the pipe bend, re-select the pump. Hot water circulation pump flow due to lack of methods 1, hot water circulation pump inlet and outlet valves are not open, out of the pipeline obstruction, liu production impeller obstruction. Solution, remove obstruction. 2, pipes, hot water circulation pump impeller impeller blockage, scale deposition, valve opening insufficient. Remove the obstruction and readjust the valve opening. 3, more than the rated flow, regulate the flow of small outlet valve. 4, impeller wear, replace the impeller. 5, low centrifugal pump voltage, voltage regulator. 6, pump bearing wear, replace the bearing. 7, Centrifugal pump suction is too high, reduce suction. Hot water circulation pump noise, vibration and elimination methods 1, liquid mixed with gas, improve suction pressure exhaust. 2, produce cavitation, reduce the degree of vacuum. 3, pipe support unstable, stable pipeline. 4, bearing damage, replacement of bearings. 5, the motor overload heating operation, regulate the flow of small outlet valve. Hot water circulating pump failure reasons and troubleshooting 1, the pump sand holes or cracks, welding repair or replacement. 2, hot water circulation pump mechanical seal wear and replace. 3, Loose mounting bolts, fastening. 4, sealing surface is not smooth, trimming. Hot water circulation pump motor heating reasons and troubleshooting 1, hot water circulation pump flow is too large, overload operation, off the small outlet valve. 2, hot water circulation pump motor bearing damage, replace the bearing. 3, lack of voltage, voltage regulator. Rub touch, check exclusion. (Editor: Li Juan QQ: 2355962925) Recommended reading: 2017 exhibition information