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I have new filters to replace in a AC-30 Culligan Good Water Machine (Reverse Osmosis). What is the procedure to sanitize and flush the system?

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Filter Replacement and Sanitizing Procedure
Use the following procedure and the reference in Fig. 3 when servicing the Good Water
Machine.
NOTICE: Cleanliness is essential in the filter replacement procedure. Be sure to wash your
hands thoroughly before handling filters. The use of protective gloves is strongly recommended.
Materials:
Pre-flushed activated carbon cartridge and polishing filter cartridge
Particle filter
Household (5.25%) bleach - hydrogen peroxide is not recommended
Clean 1-gallon plastic container with cap
100-ml graduated cylinder
Plastic pan to hold manifold assembly
Tubing connector, 3/8” tube x 3/8” tube
Flat-blade and #2 Phillips screwdrivers
Paper towels
Disposable plastic gloves (like those used in the food service industry)
PREPARATION
1. Locate the system’s supply valve and turn off the system’s water supply.
2. Using the graduated cylinder, add 5 ml (about 1 teaspoon) of bleach to the 1-
gallon container. Open the dispenser faucet and fill with one gallon of product
water. If there is not enough RO water, fill the container the rest of the way with
soft water. Cap the container and shake to mix.
NOTICE: If any RO water remains after filling the container, you may want to fill a
pitcher with the drinking water as it will take several hours for the system to refill after
servicing. In any case, leave the faucet open until the storage tank is empty and then, close
the faucet.
3. Remove the polishing filter (Fig. 4) and discard. Connect the tubing ends together
with the tubing connector.
4. Lift the filter assembly from the mounting bracket and place it in the plastic pan to
catch any dripping water.
5. Using the flat-blade screwdriver, pull the u-clips from all three housings. Insert the
u-clip into the two square holes at the bottom rear of the manifold and push up to
release the filter housings. Remove the housings with a downward twisting pull.
6. Remove the particle filter cartridge and the activated carbon cartridge and discard.
If the RO membrane filter will be reused, clean the outside with a wet paper towel
and place the membrane filter in a clean, unused plastic bag.
7. Wet some paper towels with the diluted bleach solution. Clean the inside of the
housings and the underside of the manifold with the paper towels.

SANITIZING THE STORAGE TANK AND FAUCET
1. Add 15 ml (about one tablespoon) of bleach to the particle filter housing (#1,
Fig. 3). Replace all three housings on the manifold and insert the u-clips.
2. Turn on the supply valve and fill the storage tank with 1 to 2 gallons of water.
NOTICE: The weight of the storage tank will increase by 8 to 16 pounds. Turn off
the water supply valve.
3. Wait ten minutes before opening the faucet and draining the storage tank. Do not
rinse any remaining solution from the tank.
NOTICE: During this time, proceed to the “Sanitizing the Manifold Assembly” section.
Wait to do step 4 until indicated.
4. Remove the temporary tubing connector and replace it with a new polishing filter.
Make sure the flow arrow on the polishing filter points to the faucet (Fig. 4).
SANITIZING THE MANIFOLD ASSEMBLY
1. Using the flat-blade screwdriver, pull the u-clips from all three housings. Insert the
u-clip into the two square holes at the bottom rear of the manifold and push up to
release the filter housings. Remove the housings with a downward twisting pull.
Discard any solution remaining in the housings.
2. Open the particle filter cartridge bag half way, being careful not to touch the filter
element. Lubricate the particle filter cartridge o-rings with water and insert the
cartridge into position #1 in the manifold.
3. Fill housing #1 about 2/3 full of the diluted bleach solution from the 1-gallon
container. Assemble the housing to the manifold and replace the u-clip.
4. Repeat steps 2 and 3 for housing #2 (activated carbon cartridge) and housing #3
(RO membrane filter).
NOTICE: For RO membrane filters that have a single open-end, pour diluted bleach
solution into the center tube.
CAUTION: The solution should remain in contact with the RO membrane filter
for at least five (5) but no longer than ten (10) minutes. Longer contact time will
shorten the life of the membrane.
NOTICE: While waiting for the filters to be sanitized, complete step 4 of the “Sanitizing
the Storage Tank and Faucet” section. Then complete step 5 below.
5. Using the #2 Phillips screwdriver, loosen the capillary assembly retaining screws,
then twist and remove the assembly. Inspect the tubing for plugging and kinks and
replace the tubing as needed. Reinstall the capillary assembly, but leave the screws
¼-turn loose.

Or go to link below to get the manual starting on page 8 tells you how to service the system.

http://www.vettersculliganwater.com/pdf/AC-30_Good_Water_Machine_1994-2005_01882029_(RevC).pdf

Posted on Feb 07, 2010

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