Abundant Flow Water Zoi DFK-Epsilon Service Manual - Page 9

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To change the membrane:

Note: The tank will need to be emptied when replacing the

membrane. If you would like to save the water in the tank for use,

follow the instructions below, opening the faucet and collecting

the water from the tank after turning the feed water off.

1. Turn off the feed water supply. This is done by closing the

angle adapter ball valve. The valve is closed when the handle is

at a 90° angle to the tubing (when handle is NOT parallel to

tubing). If saving water from the tank, do so after closing the

valve.

2. Shut the ball valve on the tank. The valve is closed when the

handle is at a 90° angle to the tubing (when the handle is NOT

parallel to the tubing).

3. Open the faucet to release any remaining pressure.

4. Pull the system out to where it can be easily worked with. If

the system was installed with enough tubing to do so, simply

pull it out to where it can be worked on. If the system does not

have enough tubing, you will need to disconnect the lines to

pull it out. (When changing the membrane, it helps to have a

towel handy, as some water may leak out.) Make note of which

tube goes where to ensure the system will be hooked up the

same way it was.

5. Disconnect the tube feeding the membrane (the tube going to

the single fitting on the membrane housing cap). If unsure how

to disconnect the quick connect fittings, refer to the section

on quick connect near the beginning of the manual.

6. Remove the membrane housing cap (when looking at the

fitting on the cap it will turn counterclockwise to loosen).

7. Remove the membrane from the housing. A pair of needle

nosed pliers may be needed to grip the end of the membrane.

To remove, gently pull with a twisting motion and the

membrane should slide out.

8. Lubricate the O-rings on the membrane with a silicon based

lubricant (vegetable oil may be used if silicon lubricant is not

available), and push back into the housing.

9. Lubricate the O-ring on the membrane housing (some

housings have 2) and screw the membrane housing cap back

onto the housing.

10. Push the tubing back into the fitting on the membrane cap.

11. If the filters need changed, now is a good time to do so, since

fitting that grips the tubing and holds it in place. To remove,

simply hold the collet ring against the fitting and pull the tubing

out. To replace tubing, just push it into the fitting, it will slide in

easily about 1/4" then stop, apply a little more pressure and it will

slip in another 1/8" or so and seal in place.

5. Familiarize yourself with any purchased upgrade kits. If you

ordered any kits to upgrade your system, read through the

instructions on how to install it, as it is usually easier to install any

upgrades before installing the system.

6. Check to ensure there are no missing parts. Use the parts

checklist on the following page to make sure all the parts listed

are present. If anything is missing, call us and we will get

replacements out as soon as possible.

7. Assemble the tools you will need. Depending on where the

system is being installed and the plumbing, the tools needed may

vary. You will need a Phillips head screwdriver, drill, wrenches,

pliers & PTFE tape. You will also need a sharp knife or scissors to

cut the tubing (when cutting tubing, ensure the end is smooth and

straight, this will ensure a good seal and prevent leaks). This list is

just a start, reading through the instructions and determining

where you are installing the system will give you a better idea of

everything needed.

8. Ensure the following conditions are met:

Feed Water

Inlet Pressure

Temperature

pH Level

TDS Level

For pressure less than 40psi a booster pump will be required. If

pressure is less than 50psi a booster pump or permeate pump is

recommended. If other conditions are not met contact us for a

solution. NOTE: Failure to meet the above conditions will void the

warranty on the system.

Parts Checklist

In addition to the RO system, faucet, storage tank, and UV

transformer (if a UV was ordered), you should have the following

Revised 10/2014

Minimum

Condition

40 psi

40° F

0 ppm

Maximum

80 psi

100° F

2000 ppm