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Having a pool at home can be a great source of pleasure and exercise, especially during hot summer days. However, maintaining a pool also involves some responsibilities, such as keeping the water clean and balanced, checking the equipment regularly, and troubleshooting problems that may arise. One common issue that pool owners may encounter is a loss of suction in the pool pump, which can reduce the water circulation and filtration, and lead to cloudy, dirty, or even green water. In this article, we will explore some of the reasons why a pool pump may lose suction after a while and what you can do to fix or prevent it.
Before we dive into the causes and solutions, let’s first understand how a pool pump works and why suction is important. A pool pump is the heart of your pool’s circulation system, which pulls water from the pool through the skimmer and main drain, pushes it through the filter to remove debris and contaminants, and returns it to the pool through the return jets. The pump creates a partial vacuum by drawing air and water into the impeller, which spins inside the pump housing and sends the water out under pressure. To maintain this flow, the pump must have a steady supply of water, free of air and blockages, and a strong seal between the impeller and the pump lid or basket. If any of these conditions are not met, the pump may lose suction and fail to operate effectively.
Now, let’s look at some potential causes of pool pump suction loss and how to address them:
1. Air leaks: If air enters the pump or the suction line, it can disrupt the water flow and reduce the suction power. Air can infiltrate the system through various points, such as a loose or cracked lid o-ring, a damaged gasket, a loose or broken fitting, a clogged or leaking suction line, or a faulty valve. To detect air leaks, you can run the pump and inspect the pump lid, basket, and fittings for bubbles, listen for hissing sounds, or feel for air escaping from the suction line. To fix air leaks, you may need to replace or tighten the o-ring, gasket, or fitting, repair or replace the suction line, or clean or replace the valve.
2. Clogs and debris: If the pump basket or the filter is clogged with leaves, twigs, hair, bugs, or other debris, the water flow can be obstructed and the suction power can be reduced. A dirty filter can also increase the pressure inside the pump, which can damage the impeller or the motor. To prevent clogs and debris from affecting the pump, you should clean the basket and the skimmer regularly, remove any floating or submerged objects in the pool, and backwash or clean the filter as needed. If the filter is too dirty or damaged, you may need to replace it with a new one.
3. Low water level: If the pool water level is below the skimmer or the main drain, the pump may not be able to draw enough water to maintain suction, especially if there are air leaks or clogs in the system. To ensure proper water level, you should check and adjust it regularly, especially during hot and windy days when evaporation can lower it quickly. You can also use a water leveler or an automatic pool water filling system to keep the water level constant.
4. Pump size and power: If the pump is too small or weak for the size and volume of the pool, it may not be able to create enough suction to circulate and filter the water efficiently. Similarly, if the motor is worn out or overloaded, it may lose power and lose suction over time. To choose the right pump and motor for your pool, you should consult a professional pool contractor or use a pool pump sizing calculator, which takes into account factors such as pool size, type, and plumbing, as well as flow rate, head pressure, and energy efficiency. If the pump or the motor is too old or damaged, you may need to replace it with a new one.
5. Other factors: In some cases, the loss of suction may be caused by other factors, such as a blockage in the skimmer or the main drain, a broken or bent suction pipe, a malfunctioning valve, or a leak in the pool shell or plumbing. These issues may require more advanced troubleshooting and repair skills, and may involve digging or cutting into the pool deck or wall. If you suspect any of these issues, you should contact a certified pool professional or a licensed contractor to inspect and fix the problem.
By addressing the causes of pool pump suction loss and taking preventive measures, you can ensure that your pool stays clean, clear, and safe for swimming, and that your pump operates efficiently and lasts longer. Remember to follow the manufacturer’s instructions, safety guidelines, and maintenance schedule for your pump and other pool equipment, and to keep a record of your inspections and repairs. With proper care and attention, your pool can provide years of enjoyment and relaxation for you and your family.
Further reading: Why Is My Water Not Running At Full Pressure?
Frequently Asked Questions for Why Does My Pool Pump Lose Suction After A While?
1. What are the common reasons why my pool pump loses suction after a while?
There are several reasons why your pool pump loses suction, including clogged skimmer baskets or pump strainer baskets, air leaks in the suction side of the pump, a worn-out impeller or seal plate, or a dirty or clogged filter.
2. How can I prevent my pool pump from losing suction?
To prevent your pool pump from losing suction, you should regularly clean and maintain your skimmer baskets and pump strainer baskets, inspect the suction side of the pump for air leaks, replace worn-out impellers or seal plates, and clean or replace your pool filter as needed.
3. What should I do if my pool pump loses suction?
If your pool pump loses suction, you should first check and clean your skimmer baskets and pump strainer baskets. If this doesn’t solve the problem, inspect the suction side of the pump for air leaks and repair any leaks you find. If the impeller or seal plate is worn-out, replace them. Finally, clean or replace your pool filter if it’s dirty or clogged.
4. Can a pool pump losing suction cause damage to my pool?
Yes, a pool pump losing suction can cause damage to your pool if it’s not addressed promptly. When the pump loses suction, the pool water may not circulate properly, leading to poor water quality, algae growth, and equipment damage. Additionally, if the pool water level drops too low due to a suction problem, it can cause damage to the pool’s walls or liner.
Related article: Why Is My Pool Water Not Flowing Through The Pump?