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All iSpring Water Filter Systems are designed with ease of use and low maintenance in mind. If the
filter cartridges are changed on schedule as suggested, the system will work properly for years to
come. See the chart below for the filter pack model numbers for your system. The filter packs can
be found on 123filter.com, Amazon, or HomeDepot.com.
Filter Set Model
F3-CUA4
F4-CUA4
F5-CUA4
F7-CUA4
When to change the filter?
The filters are highly suggested to be replaced when they reached their recommended replacement
cycle. However, the actual lifespan of filters may vary depending on the source water quality and
daily usage. If you notice a great decrease in the tap water flow, or detect a unpleasant smell, taste,
and odor, it would be a good time to get your filters changed.
Stage No.
1
2
3
4
How to change the filters?
A. Turn off the inlet cold water valve. Open the drinking faucet to release pressure.
B. With a towel or bucket underneath, twist the used filter cartridge clockwise to take it off.
C. Twist the new filter cartridge counterclockwise into the machine head.
D. Check the tubing connection. Rinse the system for 5-15 minutes. The filter replacement is now
finished.
O-rings: Replace every 3 years or sooner if leak happens at O-rings.
What should I do with the system when going out of town?
When you are leaving for an extended time, you will want to shut off the water supply to the
system and empty the water inside the system. To do this, close the knob on the feed water adapter,
and open the drinking water faucet until it stops running. This will signify that the system is empty
of water. The filters should be replaced if the system is not used for over a week as they will be
sitting in stagnant water.
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(Stage 1)*1+(Stage 2)*1+( (Stage 3)*1+(Stage 4)*1
(Stage 1)*2+(Stage 2)*1+( (Stage 3)*2+(Stage 4)*2
Filter Method
PP Sediment, 5 micron
Ultrafiltration Semi-permeable Membrane
KDF + Activated Carbon
Post Activated Carbon
www.123filter.com
Maintenance
Content
(Stage 1)*1+(Stage 3)*1+(Stage 4)*1
(Stage 1)*2+(Stage 3)*1+(Stage 4)*2
| (678) 261-7611 |
Filter Lifespan
6-12 months
12 months
6-12 months
6-12 months
support@123filter.com
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