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Unicel Replacement Harmsco Pool Filter Cartridges

Pool Filter Description Sq. Ft. Pleat Ct Outside Dia Length Inner Dia Unicel  Filter P.N Price
Harmsco Betterfilter
9-3/4" 1-1/16"

BF75   SC/TC 75
OEM filter is 7-3/4" OD
3-1/2" female thread/FPT
2-5/8" / open

Unicel Cartridge Cleaning Instructions for Chlorine Users

When should a cartridge element be cleaned?

For swimming pools, clean the cartridge when filter canister pressure reaches 8 PSI above the normal system or new
cartridge starting pressure. If Baquacil is used as a sanitizer, the filter element must be cleaned with Baqua Clean before
any cartridge cleaner is used.

What is the procedure to clean my cartridge?

1. Remove the cartridge from the jacuzzi filter housing following the manufactures instruction.
2. 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.
3. Rinse until all dirt and debris are gone.
4. If the jacuzzi filter has a coating of algae, calcium carbonate, iron, or other minerals, soak the cartridge in a solution of one
muriatic acid to twenty parts water until all bubbling stops.
Warning: Use rubber gloves and safety glasses when using acid and chlorine. Do not add water to acid.
Do not mix acid and chlorine.

5. Rince the jacuzzi cartridge clean and reassemble housing.

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