Why do some pool sand filters blow sand out?

A swimming pool sand filter is an essential part of a well-maintained swimming pool. Many users will see fine sand at the bottom of their pools. The confusing question, though, is whether any sand is falling out of the filter, and it’s worrying pool owners. Understanding the root cause of this phenomenon is all about making your filtration system work better, ensuring you get the best experience in your pool.

pool sand filter

Why swimming pool sand filters blow sand out?

The exhaust component is damaged or loose

If a small amount of sand is found to leak out after backwashing, it may be caused by the exhaust device being damaged or loose. This problem is relatively easy to solve. Check the installation of the exhaust device for cracks and damage. Once a fault occurs, it should be replaced or repaired immediately to avoid causing greater leakage.

Side rupture

If sand leakage continues, it may be due to cracks in the side wall. Damage to the sidewalls can affect the distribution of water flow, allowing sand to leak out of the filter and into the pool. Correcting the problem will require a deeper inspection and more complex repairs. Replace damaged side plates or make other repairs necessary to ensure correct operation of the filter system.

Possibility of not filtering sand

Sometimes, what appears to be a sand problem is actually something else. For example, fine sand is scattered on the bottom of the pool or in a row along the edge of the pool, which may be caused by dust from the nearby construction site, remnants of Kabo impact, etc. Frequently testing the water quality and adjusting the chemical composition if necessary can help eliminate unfiltered sediment.

The corresponding solution after the swimming pool sand filter blows out the sand.​

First, we need to conduct a thorough inspection of the bottom of the pool, especially those with leaks. Carefully dig through the sand to find the source of the problem. This can include cleaning up damaged areas, followed by a detailed inspection of branch pipes and other critical components. Check for damage to other parts. This may require removal of other parts of the filter to fully inspect and assess the overall condition of the system. Once damaged branch pipes or other important parts are found, they should be replaced in time. Use high-quality new components that match the filtration system to ensure long-term stable operation of the system. Proper component replacement is fundamental to ensuring correct filter operation.

After damaged parts are replaced, new filter sand must be replenished. Be sure to use sand of the appropriate size and quality to ensure the effectiveness of the water filter. This step will help ensure that the sand on the new part is properly adhered to prevent further leaks.

All sand that has been used before must be processed correctly. This can include cleaning, filtering, or other means to remove impurities inside. Cleaning old sand can extend its life and reduce the load on the filter.

All in all, if you want to solve the problem of sand leakage in the pool filter, you must conduct a thorough inspection of all aspects. From proper maintenance methods (such as regular backwashing) to ensuring the integrity of the filter unit, every aspect is key to preventing sediment from entering the pool. By understanding these issues, we can provide pool owners with a consistent, clean, debris-free swimming experience. Regular inspections, timely maintenance, and careful care are important factors in improving the life and efficiency of the sand filter.