User Guide

How to change the stage 1-3 pre-filters:
1. Shut off the cold water supply valve and tank valve, and open the
RO faucet to depressurize the system. Place a bucket or towel under
the system to catch any water spills.
2. If there is enough room under the sink and the filter system is
hung on the wall, you can twist the filter housing off without
removing the system from the wall. Otherwise, you will need to pull
the system out, lay it down, and remove the housings at that point.
Be careful with the tubing connections when removing the system.
3. Twist off the filter housings in a counter-clockwise direction using
the filter housing wrench.
4. Place the new filters inside the housings. Make sure the O-Rings
are in their proper locations, and tighten the filter housings back on.
Remember not to over tighten them or they
will be hard to unscrew
next time.
How to Change the Reverse Osmosis Membrane:
1. The RO membrane typically lasts about 2 - 3 years. The membrane life span depends
on the source water quality, your water usage, and how often the three pre-filters are
replaced. To ensure the system's performance and water purity, it is important to
replace the pre-filter cartridges on schedule. Use a TDS meter to periodically to check
the RO water purity.
2. Shut off the cold water supply valve and tank valve, and open the RO faucet to
depressurize the system. Place a bucket or towel under the system to catch any water
spills.
3. Remove the tubing from the quick-connect fitting on the membrane housing cap.
Use the membrane housing wrench to twist off the housing cap in a
counter-clock-
wise direction.
4. Pull out the old membrane. Use scissors or pliers to apply leverage if necessary.
5. Clean the membrane housing using hot water and scent-free dish soap (optional). Rinse thoroughly.
6. Cut open the small end of the vacuum sealed packaging containing the new RO membrane. Hold the new membrane through the packaging, and insert it
into the housing without touching the membrane with your bare hands to avoid contamination of the membrane.
7. Make sure the O-ring is properly seated on the end of the membrane housing as shown in the previous images. We recommend replacing the O-ring every
3 years to prevent leaking due to an expired or dried out O-ring.
8. Place the membrane housing cap back on and hand tighten it, then use the housing wrench to tighten it another ¼-½ of a turn. Do not over tighten.
How to Change lnline Cartridges in 5th-7th Stages:
1. Please note that the 5th - 7th stages (model specific) have
directions and each end may have a different kind of fitting.
2. For cartridges that connect with Quick-Connect fittings, simply
press down on the lock sleeve fr
om the cartridge to remove the
fittings. Unwrap a new cartridge, follow the arrow sign on the
cartridge label to push in the correct fitting on each end, and
reconnect the tubing.
Please check out our
YouTube channel for more
installation videos and tips.
iSpring
Water
Systems
@ispringwater iSpring Water Systems