The Pentair F1S5-RC (655116-96, 12 Pack; 4005740, 1 Pack) is the sediment pre-filter cartridge for the Pentair FreshPoint F3000-B2B and F3000-B2M 3-Stage Filtration Systems. It's a dedicated 5-micron meltblown prefilter designed for water with heavy sediment, and works alongside the F2B2-RC2 cartridge set to complete the three-stage sequence.
Step-by-Step Replacement Guide
- Relieve pressure by turning off the water supply to the system and opening the faucet until water flow stops. Place a bucket or towel under the system to catch any drips.
- Remove the decorative cover, then lift the locking bar upward until the sediment cartridge disengages from the filter head assembly.
- Pull the cartridge away from the filter head assembly, and make sure the locking bar stays fully in the up position.
- Align the posts on the new F1S5-RC cartridge with the ports on the filter head assembly, then slide the cartridge into place. This engages the locking bar, causing it to drop forward and down.
- Pull the locking bar down until it snaps securely into place, then reinstall the cover.
- Slowly turn the water supply back on and open the faucet, letting it run for 20 minutes to flush the new cartridges (discard this water — carbon fines may appear at first, keep flushing until clear). Check all fittings for leaks before finishing up.
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