Drinking Water Replacement Cartridge InstructionsUpdated 9 days ago

How to Change a Cartridge:

1. Turn off the cold water supply line under your sink. 

2. Turn on the cold water handle on your sink to let extra water drain from the line, and to relieve pressure on the line.

3. If your system is mounted, remove it from your cabinet wall by lifting the Hydroviv System off of the mounting screws.

4. Use the plastic wrench that came with your Hydroviv System to open the Hydroviv System housing.  Remember, there will be water inside.  Hold the system upright if possible.  

(If your system housing is very snug, check out the tips section below.)

5. Lift out the old cartridge and replace it with your new replacement cartridge. 

6. Close the system.  First, tighten the housing by hand, then use the wrench to give it a final quarter turn.  

7. Turn your water supply back on.  Turn the cold water handle of your sink and allow water to flush through for about 30 seconds.  

Inspect the system housing and make sure there are no leaks or drips.  

—- If you have any issues opening the system, closing the system, or with any other part of these steps, please read the “tips” section below. ----

If you can’t open the system housing:

◽️ Double-check that you have shut off the cold water supply under your sink.

◽️ Double-check that you have turned on the cold water faucet handle so that all the water can drain out of the cold water line.

◽️ Remember to remove the system from the mounting screws if it is mounted on your cabinet wall.

◽️ Slide the blue wrench all the way up the base of the housing.

◽️ If you need a little extra leverage, you lay the housing flat. Push down on the system lid with one hand. Use your other hand to turn the blue wrench (like in the video in THIS LINK).

If you still can’t get your Hydroviv System housing open, please chat us from our website (click the little chat bubble on the bottom right side of the screen at hydroviv.com.  

–live agents available 7 days a week, 10 am to 8 pm EST–

If you can’t get the system housing to fully close:

◽️Open the system and put out any water that is in the base.  Look inside the system and see if one of the flat gaskets from the old cartridge is still in the housing.  (You can also check the old cartridge to see if there is a flat rubber gasket on each end.  If one is missing, it may be inside the system housing.)

• If there is an extra gasket inside the housing, it will prevent the system housing from fully closing. 

◽️ Confirm that there is a black rubber o-ring situated firmly in the inner rim of the housing. The black rubber O-ring will be located near the threading between the base and lid of the system housing.  Confirm that O-ring is seated correctly and not worn out? 

• You can see what this o-ring check looks like here. 

• If you need a new o-ring, just let me know and we can send one out immediately. 

◽️After confirming the black o-ring is in place, you can screw the lid back together, and hand tighten it as much as possible. 

1. Once you hand-tighten the housing all the way, give it an additional tighten with the blue plastic housing wrench that came with your system.

2. Then loosen with that wrench, and hand-tighten one more time.

(Essentially, you are "biting" into the cartridge's white o-ring with the power of the housing wrench, then backing it off and hand-tightening again to form a more compressed seal.) 

If you still can’t get your Hydroviv System housing open, please chat us from our website (click the little chat bubble on the bottom right side of the screen at hydroviv.com.