REPLACEMENT OF THE PREFILTER, POSTFILTER, AND RO MEMBRANE
ELEMENTS
16
REPLACEMENT OF THE PREFILTER, POSTFILTER, AND RO MEMBRANE ELEMENTS
Rev B
1. Turn off the water supply to the RO System.
2. Reduce system water pressure by opening the faucet.
CAUTION: Even with the water supply turned off the membrane
and prefilter sumps will contain a considerable amount of water. By
positioning the RO assembly in a sink or tub, most of the water will
be contained.
3. Disconnect locking bar and place the fittings (with tubing still
connected) into a tub or bucket.
4. Move system into a contained area, such as a sink or tub.
5. Remove the support leg from the three sumps and unscrew the top
sump as shown to access the prefilter element. The support leg
functions as a wrench to loosen the sump, Figure 7.
NOTE: There is no need to disconnect tubing from fittings on the
manifold. Remove locking bar and pull fittings out. Lubricate O-rings
with silicone prior to re-assembly.
NOTE: If changing only the prefilter and postfilter, the other sumps
do not need to be removed.
If changing the membrane elements, the prefilter and postfilter
should also be changed.
Figure 7