SpectraPure
®
SpectraPure
®
Inc.
480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
22
RO MEMBRANE REPLACEMENT:
Your Mega MaxCap system comes equipped with a SpectraSelectPlus™ 99%
rejection membrane. As membranes age, their rejection rates drop. The DI
cartridges scrub all of the TDS from the water that the RO membrane does
not remove. If your rejection rate drops from 99% to 98%, then the life of
your DI cartridges will drop roughly in half as they have to remove 2% of
contaminants instead of 1%. Thus, the decision to replace the RO membrane
becomes subjective as one considers the cost of replacing the RO membrane
compared to the decreased lifespan of the DI cartridges. We recommend
that you replace the RO membrane when your rejection rate drops to 95%,
and probably sooner if you notice that your DI cartridges are becoming
rapidly depleted. (See “Testing The Quality Of The Membrane” on Page 15.)
1. Turn off the water supply to the RO system. Place the system where
the membrane housing(s) can be easily accessed.
2. Remove the black tubing from the membrane feed push fitting by
depressing the collar on the fitting with your thumb and pulling the
tubing from the push fitting. You should not have to remove the blue
and yellow tubes. (See Working With Push Fittings on page 18.)
3. Lift the membrane housing from the retention clips and unscrew the
membrane housing cap. This may require two people.
4. Use a pair of pliers to grasp the membrane stem and pull the membrane
from the housing.
5. Remove the black housing O-ring. Wash the empty housing with
soapy water. Rinse thoroughly with hot, clean water.
6. Insert the new membrane into the housing, with the double O-ring
end first. The o-rings and tube must fit into the recess at the bottom
of the membrane housing. When the membrane is aligned with the
recess, firmly push the membrane into the recess until it bottoms out.
Proper Orientation
of New Membrane in
Relation to Housing
(continued on next page)
