When To Clean The Filter; Cleaning The Filter Cartridges - Pentair FULLFLOXF C Series Installation And User Manual

When to Clean the Filter

Properly monitoring and cleaning the filter will prevent avoidable repairs and maintenance.
Clean your filter when pressure reads between 8-10 psi higher than the "Original Starting Pressure" recorded in Table
2 on page 7, or when significant reduction in flow is noticed. The pressure reading increases as it filters dirt from your
pool. This build up of pressure will vary due to different bathing loads, temperature, environmental conditions, etc.

Cleaning the Filter Cartridges

1. Follow Opening the Filter (page 5) exactly.
2. Remove hair and lint strainer pot lid from the pump and clean
basket. Replace strainer basket and secure strainer pot lid.
3. Remove the Air Bleed Screen Cap (1) from the Top Manifold (2).
See Figure 10.
4. Clean all debris from the Air Bleed Screen Cap and reinstall onto
the Top Manifold.
5. Separate the Top Manifold (2) from the filter cartridges and lay the
manifold aside. See Figure 10.
6. Carefully remove each cartridge separately.
7. Using a garden hose with a straight flow nozzle, wash down the
entire filter cartridge. Wash from the top down, holding the nozzle
at a 45-degree angle to the cartridge (see Figure 11). Pay special
attention to the area between pleats.
8. For cartridges used in pools or spas where high levels of
perspiration, suntan lotions and other oils are present:
a. Soak the cartridge for at least one hour (overnight is most effective) in one of
the following:
• A commercial filter cleaner
• One cup trisodium phosphate (TSP) to five gallons of water
• One cup dishwasher detergent to five gallons of water
b. Rinse the cartridge to remove oils and cleaning solution.
cause premature cartridge failure.
9.
If algae, calcium, iron or other mineral build-ups are present on the filter cartridges,
acid soaking may be necessary. Refer to Acid Soaking the Filter Cartridges, on page
10, for specific instructions.
10. Direct the water spray to wash out the inside of the tank body. Water and debris will drain out through the open
drain plug.
11. Place the four (4) cartridges back onto the support pipes in the bottom of the tank.
12. Reinstall the Top Manifold onto the cartridges and verify the Air Bleed Screen Cap (1) and O-Ring (3) are secured
to the manifold. See Figure 10.
13. Follow Installing the Filter Lid and Clamp Ring exactly (page 6).
Heed all manufacturers' instructions and warnings when using
polyhexamethylene biguanide sanitizers or other cartridge filter
cleaner solutions.
Failure to remove all oils and cleaning solutions before acid soaking will
result in permanent restriction of water flow through the filter and will
Figure 10
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XF®
FULLFLO C-SERIES Cartridge Filter Installation and User' s Guide
9
1
2
45°
Figure 11