What to do when the speed of a high-efficiency, energy-saving multi-stage pump is unstable

Category: Water pump knowledge

2025-07-22

The issue of unstable speed in high-efficiency energy-saving multi-stage pumps is a common mechanical problem in the industrial field. Unstable speed not only affects the pump's performance and service life but also has a negative impact on the operation of the entire production line. This problem can be investigated and solved from the following aspects.

1. Check Power Supply Issues

Check if the supply voltage is stable. If the voltage fluctuates significantly, it may cause unstable pump speed. In this case, a voltage stabilizer needs to be installed to ensure that the voltage fluctuates within a reasonable range. Simultaneously, check if the power lines are aging or damaged; replace them if necessary.

2. Check the Pump Itself

Check if the impellers of the multi-stage pump are severely worn or clogged, which may cause unstable pump speed. If there is a problem, replace the impeller or clear the blockage in time. In addition, check the wear and tear of the pump bearings; severe wear will also cause unstable speed, in which case the bearings should be replaced.

3. Adjust the Control System

If the pump is equipped with a variable frequency drive or PLC control system, check if the system parameters are set correctly. Improper parameter settings may cause unstable speed. Adjust the parameters according to actual needs to ensure the system runs normally.

4. Check Load Issues

Pipeline flow changes or pipeline blockages and other load problems may also cause unstable pump speed. The pipeline system needs to be checked to ensure stable flow and clear any possible blockages. In addition, consider whether too much gas has entered the pipeline system, affecting the pump's operation; if necessary, take measures to exhaust the gas.

5. Maintenance

Regularly maintain the pump, check the wear and tear of each component, and replace them in time. Maintaining the pump's good operating condition can effectively prevent unstable speed problems.

6. Professional Repair

If the above methods cannot solve the problem of unstable speed, it may be necessary to ask professional repair personnel for in-depth inspection. They can use professional testing equipment and methods to find the root cause of the problem and take corresponding solutions.

In short, solving the problem of unstable speed in high-efficiency energy-saving multi-stage pumps requires investigation and repair from multiple aspects. In actual operation, appropriate measures should be taken according to the specific situation to ensure the stable operation of the pump.

Previous: What to do when a high-efficiency, energy-saving multi-stage pump fails to draw water

Next: What to do when the speed of a mine multi-stage pump is unstable

Contact Us

Free Hotline:0086-13307481676

Fixed telephone:0086-13307481676      

Mobile:0086-13307481676(WeChat)

E-mail:sales@sanchangpump.com