How to Clean a Cartridge Filter

  1. Caution!!! Swimming Pool Filters are a pressurised vessel and can be dangerous if handled incorrectly. The information provided here is to be used as a guideline only. We offer on site training in all aspects of pool maintenance and strongly recommend a site visit by a professional.
  2. Shut off the system. Before you begin, shut off your pool’s pump and go ahead and shut off the power just to be safe.
  3. Remove air from the system. Turn the air relief valve that is usually located on the top of your filter slowly to remove any excess air from the system.
  4. Take off the clamps holding the filter together. Different types of filters use different mechanisms to hold the filter together, these must be removed in order to remove the filter.
  5. Remove the top of the filter. Once the clamps are removed, take off the top of the filter to expose the element inside of the cartridge.
  6. Slowly and carefully remove the element of the cartridge  and set it aside. Take note of how each element is positioned inside the filter and take note of any damage to the elements. If you find any cracks or tears, you should consider replacing those parts of the filter.
  7. Using a degreaser, coat the  element of the filter. Some cleaners require that the element be soaked overnight while others simply need to be coated and rinsed. Follow the instructions included on your degreaser’s package carefully.
  8. Rinse the element with a hose gently. If you have a hose attachment designed for pools, consider using those settings for rinsing the element.
  9. Once the  element has been cleaned, return it to it's original position.
  10. While your filter is apart, go ahead and double check the O-ring on the filter tank. If it is dry rotted or appears too flat, you will need to replace it before reassembling your filter. If it appears to be in good condition, add a light layer of silicone based lubricant to the O-ring.
  11. Replace the filter and close the clamps that hold it securely in place.
  12. Turn your system back on and then open the air relief valve to release any excess air that is in the system. Keep the valve open until a steady stream of water sprays from it.
  13. Double check the system pressure to be sure it is in normal range. If the PSI levels seem off, you may have put it back together incorrectly or you may have other problems with your system.
  14. Caution!!! Do not lean over the top of the filter when first turning on. If you have not secured the lid correctly, you may be injured if the filter tank and lid separate.



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