Air-O-Swiss AOS U600 User Manual page 21

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Water quality maintenance
(recommended optional accessory)
The Ionic Silver Stick (ISS) utilizes the antimicrobial pro-
®
perty of silver and provides a year of optimum water quality
maintenance in all AIR-O-SWISS and BONECO humidifiers.
The ISS begins working as soon as it comes into contact
with water – even if the unit is switched off. The ISS is
intended exclusively for use in humidifiers. Look at picture
16 for the position of the ISS in the appliance. Do not reach
inside the nebuliser space during operation. Switch off the
unit first.
Do not use additives
Water additives (e.g. essential oils, fragrances, water con-
ditioners etc.) must NOT be used! Even a small amount
can cause damage to the tank material. The material is not
suitable for the use of such additives. One drop is enough
to damage the tank and render the appliance unusable.
Appliances that are damaged by such additives will not be
covered by the manufacturer's warranty.
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