SOLTRON XXL-105 ULTRA POWER Instructions De Service page 48

Cleaning and maintenance
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– Remove the filter mats.
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– Dry or moist clean the filter mats or replace with new ones.
Dry cleaning: Vacuum cleaner (depending on the degree of soiling)
Moist cleaning: Water and detergent
– Do not clean in the dish-washer!
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– Refit the cleaned and dried filter mats.
The assembly is the same process in reverse order.
WARNING!
The device may be damaged by moisture!
The cleaned filters must be dry before they are replaced.