NuvoH2O Filter and Cartridge Replacement
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1. Before replacing your filter and cartridge, we recommend having a towel on hand and placing a bucket underneath your softener system
to catch any water that may spill. The bucket should also be used to carry your spent cartridge as the concentrated solution can damage
flooring if it drips from the cartridge.
2. Discontinue water flow to the system by closing valves A and D (see diagram on page 3). Open valve C, allowing water to flow to the
home. Loosen pressure release valve in the head of the system with a screwdriver. Use towel to absorb waterthat leaks from the valve.
3. Using the black plastic wrench provided, turn the sump clockwise (left) to loosen the sump from the collar of the system. CAUTION: The
sump will be heavy and full of water!
4. Remove the spent cartridge and place in a bucket. Turn it upside down into a porcelain sink or tub and let it drain completely. The
outside of the cartridge can be rinsed with warm water. The water that empties from the cartridge will be very concentrated. DO NOT
allow it to come in contact with copper, stone (natural or unsealed), carpet, cement, or other flooring.
5. Wash the sumps with bleach and warm water using a nonabrasive sponge or cloth. Clean the inside of the sump with 1/3 cup of bleach
and 3 quarts of warm water. Rinse thoroughly.
6. Remove the plastic shrink wrap from your new filter and cartridge and insert them into the sumps. The small, round holes on the side of
the cartridge must be at the top.
7. Inspect O-ring, on the top of the sump, for wear. Ensure it is seated properly. Lubricate O-ring with a water-based lubricant or replace
as needed.
8. Be sure to align the filter and cartridge properly in the sumps and heads. Failure to do so may cause them to crack when tightening the
sumps back onto the heads.
9. One at a time, carefully attach the sumps (now with the cartridge and filters inside) to head by rotating the collar counter clockwise.
Secure with the wrench provided.
10. Open the first bypass valve (A), allowing the sump to fill with water. When water leaks from the pressure release valve at the top of the
head, tighten to close (B).
11. Close the first bypass valve (A), allow cartridge to sit in the housing with no water flow. After one hour open the main valve (C), thus
allowing water to flow throughout the household while the filter and cartridge sit idle.
12. After one hour, close the top bypass valve (C) and open the first and last bypass valves (A&D), allowing the water to flow through the system.
13. After installation, allow water to flow through the system without consuming the water, i.e., a shower for at least an hour. This will allow
any excess carbon from the filter to exit the system.
Note: If the system is unused for an extended period replace the filter and cartridge before use.
