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2
6
Maintenance
6.1
Maintenance intervals
The Defensor PH15/PH15A can only provide full humidification and purification performance if the unit
is regularly cleaned and the wearing parts are replaced. The maintenance intervals mostly depend
on the load of the ambient air, the water quality and the operating time.
Please consider the intervals for cleaning and replacing the individual components in the table below
as approximate values. If the room air is heavily contaminated the filters must be cleaned/replaced
more often. If the water is very hard the parts in contact with water must be cleaned more often.
1
Note: If your unit is equipped with silver ionisation electrodes and if they are worn, slime will accu-
mulate in the base tub and on the centrifuge. In this case replace the silver ionisation electrodes.
2
3
5
Month
9
Warning 6
Filter change
10
11
12
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