Water Factory Systems CMTRO-75 - Manual (Page 7)

6
How to Replace the Prefilter and Postfilter Cartridges
1. Close the feed water valve and tank valve, then partially drain the cooler reservoir. Wait five (5) minutes for the
assembly to completely depressurize.
2. Twist the filter cartridge 1/4 turn to the left so that the ears on the cartridge are able to disengage from the head.
Firmly pull the cartridge from the head. It may be necessary to twist the cartridge slightly from side to side to help
free it. (See Illustration A, below.)
3. Remove the new filter cartridge from its sanitary sealed wrapper. (Double check to see that it is the correct
replacement by comparing the icon labels.)
4. Using tap water, food grade silicone lubricant or glycerin, wet the o-ring seals to make cartridge insertion easier.
5. Line up the cartridge ears, insert the cartridge and push it into the head until it is fully seated. Twist the cartridge 1/4
turn to the right to lock it into place.
6. Open the feed water valve and carefully check for leaks.
7. Prefilters: Disconnect blue 3/8" tubing from cooler & run to drain line. Flush
at least 2 gallons of water through filter before use.
Postfilters: Run blue 3/8" tubing to drain line. Flush at least 2 gallons of
water through postfilter before use.
Replacing The RO Membrane Cartridge
The life of the RO membrane cartridge depends on the local water conditions
and proper maintenance, e.g., regular filter changes. Under typical
conditions, the RO membrane life ranges from 18-36 months. Unlike the filter
cartridges, the RO membrane cartridge life is not determined by the amount
of water used because of its self-cleaning feature.
How to Replace the RO Membrane Cartridge
1. Close the feed water valve. Partially drain the cooler reservoir. Wait five (5)
minutes for the assembly to completely depressurize.
2. Make sure that there is some slack in the green tubing connected to the
fitting at the bottom of the RO membrane cartridge. Twist the cartridge 1/4
turn to the left so that the tubing connection is accessible. (See illustration
on the right.)
3. Remove the green tubing by depressing the small white collet and pulling
the tubing away from the fitting.
Note: It is advisable to check the end of the green tubing for nicks or
scratches. If any are observed, cut off 1/4" from the end of the tubing with a
sharp razor knife.
4. Firmly pull the cartridge away from the head. (It may be necessary to twist
the cartridge slightly from side to side.)
5. Remove the new RO membrane cartridge from its sanitary sealed wrapper.
(Double check to see that it is the correct replacement by comparing the
icon labels.) Rinse it with tap water and dry it off.
6. Remove the white plug from the fitting at the bottom of the cartridge by
pushing in the small white collet and pulling out the plug.
7. Remove the red plastic cap from the top of the cartridge.
8. Using tap water, food grade silicone lubricant or glycerin, wet the O-ring
seals to make cartridge insertion easier.
9. Reconnect the green reject tubing by inserting it into the fitting at the bottom of the new RO membrane cartridge as
far as it will go. Ensure that the RO Brine Flow Control is correctly installed in the end of the tubing before
inserting the tube. Line up the cartridge ears, insert the cartridge and push it into the head until it is fully seated.
Twist the cartridge 1/4 turn to the right to lock it into place.
10. Open the feedwater valve and carefully check for leaks. Carefully inspect the fitting at the bottom of the new RO
membrane cartridge.
11. Flush RO product water to drain for 24 hours.
1
OFF
ON
1 Prefilter Sediment/Carbon
2 Membrane
3 Postfilter/Carbon
Remove the green tubing
from the fitting before
completely removing the
RO membrane cartridge.
2
3
Illustration A