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4.1 Replacing the Prefilters
Prefilters are used to protect RO membrane. Their useful lives depend on the
amount of water used, tap water quality and how often prefilters are changed.
For three stage kit
These filters typically need to be replaced every 2 - 4 weeks or when indicated.
1. Shut the tap water off.
2. Disconnect the inlet and outlet of tubing from the assembly.
3. Put the assembly into the sink.
4. Use the provided special wrench to dismount the filter housing, remove the
depleted filters.
5. Install new filters: the 10
µ
m filter in the upstream housing, the activated
carbon (AC) cartridge in the middle housing, the 1
µ
m filter in the
downstream housing.
6. Mount the filter housing back onto the pack head.
7. Use the special wrench to tighten the filter housing.
8. Turn on the tap water feed, check for water leakage.
For cartridge based
The cartridge typically needs to be replaced every 3 months. It’s necessary to
replace a new cartridge when the pressure of water from outlet less than 0.1
MPa.
1. Shut the tap water off.
2. Press the "Start" Button to let system into Standby mode. Power-off the
system.
3. Install the new cartridge as described in 2.4.2 Two stage kit (cartridge based)
installation from E to I.
