3. Filter cartridge replacement
a. Turn off the power and the three-way ball valve before replacing the �lter cartridges.
b. Remove the front cover.
c. Pull out the lever of the �lter which needs to be replaced, rotate it anticlockwise and
take out the �lter
d. Remove the packaging of the new �lter and insert the �lter into the system (pull out
the lever of the �lter, align the lever with the unlock icon on the system and push it to
the end); rotate the lever clockwise to the end and push back the lever (make sure the
lever is aligned with the lock icon on the system)
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