Common Faults and Countermeasures of Hot Water Circulating Pumps
SUN YAT INDUSTRY LIMITED , https://www.ernte-eu.com
Hot water circulating pump is widely used in: energy, metallurgy, chemical, textile, paper and other fields, hot water circulating pump mainly has the following kinds of faults: no water, lack of flow, noise vibration, water leakage. The following are common problems and countermeasures, hoping to help users. First, the hot water circulation pump does not water how to do? 1. Hot water pump import and export valves are not open, out of the pipeline obstruction, abortion impeller blockage. Solution, remove obstruction. 2. Inadequate import and export of water supply, suction stroke is too high, the valve leaks. 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 leaks. Tighten the sealing surface, remove the air. 5. Motor running in the wrong direction, 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. Second, the lack of flow of hot water circulation pump? 1. Hot water circulation pump inlet and outlet valves are not open, out of the pipeline obstruction, abortion impeller blockage. Solution, remove obstruction. 2. Pipeline, hot water circulation pump impeller impeller blockage, scale deposition, valve opening insufficient. Remove the obstruction and readjust the valve opening. 3 over the rated flow use. Regulate the flow off small outlet valve. Impeller wear. Replace the impeller. Centrifugal pump voltage is low. Regulated. 6. Pump bearing wear. Replace the bearing. 7. Centrifugal pump suction is too high. Lower suction. Third, hot water circulation pump noise, vibration? 1 liquid mixed with gas. Increase suction pressure exhaust. 2. Cavitation generated. Reduce the degree of vacuum 3. Pipe support instability. Stabilize the pipeline. 4 bearing damage. Replace the bearing. 5. Motor overload heating operation. Regulate the flow off small outlet valve. Four hot water circulation pump motor heat how to do? 1. Hot water circulation pump flow is too large, overload operation. Off small outlet valve 2. Hot water circulation pump motor bearing damage. Replace the bearing. Insufficient voltage. Regulated. Rubbing. Check exclusion.