Panasonic TK7585-SHK Instruction Manual page 63

Even if U25 or U26 is not displayed, replace the cartridge when:
The water has an unpleasant odor or taste (this means that the cartridge's ability to filter out
these impurities has deteriorated).
The period of time (about 1 year) that serves as a general guideline for when to replace the
cartridge has passed.
Period of time serving as a general guideline for when to replace the
cartridge (when 30 liters are used daily)
[Replacement cartridge: Model number TK7815C1ZEX) (see page 91)
Replacement guideline
About 1 year
Differences in usage period by water quality
Inside the cartridge is a hollow fiber membrane filter for removing microscopic dirt. The cartridge's life
will be shortened when the Alkaline Ionizer is used with a quality of water containing many clogging
substances.
Hollow fiber membrane
surface (new filter)
Note
The volume of water coming out of the Alkaline
Ionizer may be reduced when:
The water temperature is low (because the water does
not run through the cartridge so easily).
The Alkaline Ionizer is used in areas where the water
pressure is low (under 70 kPa).
The pressure of the tap water has dropped because of
the demand for tap water in the area concerned.
Immediately after a period when the water supply was
shut off such as during plumbing work.
Substances removed by cartridge
Free residual chlorine, turbidity, total trihalomethane, chloroform,
bromodichloromethane, dibromochloromethane, bromoform, tetrachloroethylene,
trichloroethylene, 1,1,1-trichloroethane, CAT, 2-MIB (mold smell), soluble lead
Clogged hollow fiber
membrane surface
Clogging
guideline
Total volume of
run-through water
(1) Water containing
many clogging
substances
(2) Water with standard
quality
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