Cartridge Filter Cleaning Instructions (Chlorine Users)
You should clean the filter element when the pressure increases 8 PSI (pounds per square inch) above the clean pressure.
If you are using Baquacil®, Soft Swim® or some type of biquanide system you should first clean the element with a chemical specifically designed for this sanitizing system (see adjacent block for cleaning process). Spa filters require more frequent chemical cleanings than pools elements.
1. Remove the cartridge from the filter housing following the manufacture's instructions.
Use a garden hose with a straight flow nozzle to wash down the filter element. Work from the top down, holding the nozzle at a 45 degree angle, and wash all the pleats with emphasis between pleats.
Rinse until all dirt and debris are gone. At this point if the element does not need to be chemically cleaned you can return the element back to the filter housing. However, filter elements tend to work better if they go in the filter housing dry so it is a good idea to have 2 filters one would be in use while the other is being cleaned and dried.
4. If you are chemically cleaning the filter, follow the directions on the filter cleaner manufacture's bottle or web site for how to apply the solution.
5. Rise the cartridge again to insure the chemical cleaning solution has been removed.
6 If the filter has a coating of algae, calcium carbonate (scale), iron (looks brown), or other minerals, soak the cartridge in a solution of one part acid to twenty
parts of water until all bubbling stops.
WARNING: Failure to remove all oils and cleaning solutions before acid soaking will result in a permanent restriction of water flow and cause premature cartridge failure.
7. Rinse the cartridge clean and let dry (see note in step 3).
Note: DPW does not recommend the use of diatomaceous earth (DE) with cartridge filters. DE particles will become trapped in the body of the media and shorten the
cartridge's life. If desired, a cellulose fiber (Zeofiber) can be used in moderation.