123Filter iSpring Reverse Osmosis Water Filtration Installation Instructions & Owner's Manual page 18

ISPRING RO SYSTEM MAINTENANCE
All iSpring RO systems are designed with ease of use and low maintenance in mind. If the filter
cartridges are changed on schedule as suggested below, the system will work properly for years to
come.
Note: Stages 6 and/or 7 only exist on certain models. To order replacement filters for your system, visit
Stage 1 – 3 Pre­Filters
Replace every 6 months, or sooner if you notice a decrease in water flow or quality.
The replacement frequency depends on your water usage and source water quality. To protect the RO
membrane from chlorine and other damaging contaminants, it is important to change the pre­filters
according to schedule.
How to change the stage 1 – 3 pre­filters:
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 counter­clockwise direction using the filter housing wrench.
Refer to Installation Step 1.1 to install the new vertical filter cartridges, and tighten the filter
4.
housings back on. Remember not to over tighten them or they will be hard to unscrew next
time.
Stage 4 RO Membrane: Replace every 2 – 3 years
or sooner if the TDS level starts increasing.
Page 17 ​
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