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Reading & Understanding Your Filter Pressure

Why is pressure important?

Whether you’re running an in-floor system or even a suction cleaner, it’s important to have an optimal operating range in order for the filter to work efficiently. The ideal range is different for every system and will depend on many things including pump size, pump strength, filter size, PVC size, water travel distance, and filter cleanliness.

How to determine the ideal range for your filter?

Start with a clean filter (not necessarily new, but recently cleaned or back washed) and record the pressure reading on the filter. Each week, as part of your pool maintenance routine, record the pressure and compare it to your “clean” reading. When the pressure exceeds 10 psi. above the “clean” pressure it’s a sure indication that the filter needs to be cleaned or back washed again. Upon a fresh install the gauge may show one figure, but after a few years well show something slightly different. This is why it is important to keep an eye on your pressure. The average range varies from 10-25 psi on most systems. 

How to troubleshoot low pressure

Low pressure can also be an indication of current & future issues. Anything less than 5 psi should be a cause for concern. There are a few obvious reasons, the first of which is a blockage or impedance in the system. Visually and physically inspect the pump basket, pump impeller, skimmer basket, skimmer door, and drain covers for any debris that could be preventing water flow. 

Another common cause of low pressure could be a possible leak somewhere in the system. Examine the connections on the pump and filter for any air leaks and repair them accordingly. Be sure to go through the entire system and lubricate any o-rings and gaskets as well. This should be done periodically to extend the life of the equipment.

We’ve got you covered!

If you’ve followed the steps above and are still seeing a low-pressure reading, chances are the issue is with the gauge itself. Fortunately, they are reasonably priced, easy to fix, and readily available. Click here to purchase a replacement pressure gauge directly from ePoolSupply! If you have any other questions regarding the information found in this blog, feel free to contact us directly!

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