
•after malfunction, after the appliance has been dropped or damaged in
any other way.
•Only operate the humidier when it is completely assembled.
•Repairs of electrical appliances are only to be made by qualied service
engineers. Improper repair work can cause considerable danger to the
user.
•Disconnect the appliance from the mains power before lling/emptying
the water lank, before cleaning/maintenance, assembling/ dismantling
of individual parts and before moving the appliance.
•Place the humidier on a dry, level surface. Do not place the device direct-
ly on the oor or next to heating.
•Do not pour water into the vapour outlet of the humidier.
•Do not put any additives in the water (e.g. fragrances, essential oils, wa-
ter fresheners, etc.)
•Do not submerse the main body in water or other liquids.
Attention
•The appliance works only properly with untreated Water. Do not use with
water from decalcifying devices or ion exchangers.
•Please DO NOT use any additive to the water (essential oils, water treat-
ment agent)! Even a very small quantity could destroy the material of
the water tank. The use of such additives causes immediate expiration
of warranty.
Before setup: lter cartridge and water hardness
The length of time the cartridge is effective for depends on the hardness
of the water. This can be tested using the testing strips provided (strips are
stuck to the reverse side of these instructions for use)
1. Dip the testing strips into the water for a second
2. After around one minute, the results can be seen on the testing
strips. Some of the green boxes change colour into pink. The water
hardness is shown by how many boxes turn pink.
Example: If three boxes are green, then the water hardness is at level «3»
Pink elds Water hard-
ness
Degree of
hardness
(°dH)
Cartridge suitable for
(at 6 liter / day)
Days Liter
0/1 soft from 4°dH 60 days Approx. 360 l
2middle hard from 7°dH 30 days Approx. 180l
3rather hard from 14°dH 20 days Approx. 120l
4hard from 21°dH 10 days Approx. 60
With a water hardness upwards of 21 °dH, we can no longer recommend the
use of a ultrasonic air humidier. We recommend that you use an impeller
humidier to increase humidity in your house (e.g. Oskar humidier made by
Stadler Form).
The unit only works properly with untreated water. Do not use where there
are water softeners and water ionisers in operation. However, the William
may be operated from a drinking water lter system (e.g. Brita). Should you