What causes a decline of water pump’s suction power? Let’s find the answer that we’ve provided just for you only at dimulti.id!
The water pumps are the most important and crucial device in our daily life.
Tasked for drawing and distributing the water inside your home, or office, the water pumps can sometimes experience a decline in its performance.
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So, today we will discuss what causes a decline in the water pump’s suction power?
Knowing what causes the decline in water pump suction power will help you to determine how to improve the suction power of the water pump engine properly.
Here are some of the reasons:
Table of Contents
What Causes a Decline of Water Pump’s Suction Power

1. Blockage or Leakage in the Pipes
The first cause that is commonly found when the suction power of the water pump is weakened is a blockage or leakage in the pipe.
The blockage of the pipe is often caused by the accumulating sediments such as dust, sand, or mineral crust that can block the flow of water.
However, leaks in the suction pipe can be caused by loose connections or cracks. This blockage and leakage then leads to a decrease in pressure, so that the water pump is difficult to draw water efficiently.
2. Weakened Capacitor
Capacitors on a water pump machine are responsible for supplementing power when the machine needs it.
The capacitors that are weakened or damaged are usually caused by age or environmental factors, such as electrical voltage, high temperature, and humidity of the capacitor.
This can cause the machine to have difficulties while operating and cannot keep the rotation stable.
Decreased capacitor capacity can also result in a decrease in suction power, which then affects the flow of water out of the pump.
Also Read: “How to Increase the Suction Power of a Water Pump?“
3. Broken Impellers
An impeller is a part of a water pump engine that regulates the difference in pressure in pulling and pushing water.
A damaged impeller will reduce its ability to create sufficient pressure, as well as cause a decrease in suction power resulting in a smaller water discharge.
Generally, this is due to friction and heavy pressure during surgery. Moreover, because the impeller is usually made of metal or plastic, this material is also a corrosion trigger.
4. A Trouble in The Dynamo
The dynamo on the water pump engine is tasked to generate the power needed to move the impeller.
One common cause is the wear and tear of internal components of the dynamo, such as a carbon brush that is worn off or a commutator that is damaged.
Another problem with the dynamo, such as the short circuiting, definitely affects the overall performance of the machine.
So, when the engine doesn’t work properly, it will affect the impeller so that the water outputs are limited.
5. Insufficient Electricity
Generally, a water pump machine requires electrical power to move its internal components, such as the impeller and the motor.
For that, if the power supply is low, the engine may not be able to rotate at the desired speed, so the water absorption also decreases.
In addition, a lack of electricity can also cause a drop in water pressure in the water pump system.
Low water pressure will result in less efficient suction power, so that the water pump is having a hard time to pull and push water efficiently.
Also Read: “Components of Water Pump“
So there you have it, the answer to “What Causes a Decline of Water Pump’s Suction Power?” that we’ve prepared just for you!












