The pressure gauge at the pump outlet shows low pressure
Thread Content
For the centrifugal pump used for water intake, there are no obvious abnormal noises from the pump (no stethoscope was used). The pump outlet pressure gauge reads 1.8 Mpa, while the normal value is 2.0 Mpa; the pump shuts down if the pressure falls below 1.5 Mpa. There is no pressure gauge upstream of the pump. Hey experts, what’s going on here?
Is the inlet filter clogged? Is the pump inlet pressure low? The pump head depends on the pipeline resistance and the required pressure; it’s not difficult to figure this out on your own
It is recommended to consider the following reasons: 1. Instrument issues – the pressure gauge gives inaccurate readings; it should be retested and calibrated. 2. It is caused by piping issues; check the inlet piping system, using the vacuum level as a reference, to determine whether there are too many bends at the inlet or if the suction point is too high. 3. Airtightness check: Check whether the water seal ring of the pump body is overly corroded, resulting in reduced efficiency. 4. Mouth ring clearance. After the water pump has been in use for some time, the rotor component, namely the impeller, becomes excessively worn; at this point it is necessary to service the pump or replace the impeller. Regular maintenance of water pumps can effectively improve their performance and also **extend their service life.
715867803@qq.com
1. Regarding your question about whether to check the pressure gauge? 2. Remove the gauge to eliminate bubbles inside? 3. Completely disassemble the pump and replace the seals?
What is the design flow rate? What is the actual traffic volume? What is the valve opening degree?
I have encountered this problem many times, and in the vast majority of cases it’s because the pump inlet filter is slightly clogged. It is recommended to clean the filter first.
6th/7th floor is the correct answer. . First, check what the operating current is. What is the rated current? It is most likely caused by excessive current and an overly large valve opening. You can try this: turn down the valve and see if the pump can reach 2.0 MPa. If it can, then turning the valve down further will be fine.
First, check whether the inlet pipe filter is clogged, then measure the pump current to see if it exceeds the rated current
There are three main aspects: 1. Whether the water pump is operating properly, whether its operating parameters are correct, and whether the impeller is in good condition; 2. The sealing quality of the pipes; 3. Whether the gauges have been calibrated