13
en

Operation AOS U650

CURRENT
TIME
DESIRED
ACDEFMLHGIKBJ N

A) On/Off Dial and Display Dimmer

BypressingbuttonAonce,youcanswitchtheuniton.By
pressingittwice,thedimmerisswitched onwhichauto
maticallydims thedisplay brightnessand symbol N
comeson.Whenchanginganysettingsthedisplaywillillu
minateforafewsecondsbeforereturningtodimmermode.
BypressingbuttonAathirdtime,the unitisswitchedoff.
Thisbuttonisalsousedtoresetthecleaningindicatorlight
(byholdingdown).

B) Hygrostat (setting the humidity level)

BypressingbuttonByoucansetthedesiredhumiditylevel
from30%to80%orCO(continuousoperation).Arelative
humiditybetween40and 60%isrecommended.Theac
curacyofmeasurementis+/5%.Theunitwillswitchoff
whenthemoisturelevelexceedsthedesiredsetting.During
selectionthetargetvalueisdisplayed(symbol DESIRED) . 
Thedisplaywillautomaticallyshowthecurrentvalueafter
afewseconds(symbol CURRENT).

C) Timer

Usingbutton C, the operation time can be set adjusta
blebetween1and 8hoursor CO(continuousoperation).
Symbol Gshowsthe operatingperiodthathasbeenset
(1h/2h/3h/4h/5h/6h/7h/8h/CO).Thedisplaywillautomati
callyshowthecurrenthumidityafterafewseconds.

D) Mist output (regulating mist output)

ByrepeatedlypressingbuttonDyoucancontrolthemist
output.Symbol H showswhich ofthe threelevels (low/
medium/high)youhaveselected.

E) Operation with pre-heating (warm mist)

ButtonEisusedforswitchingthepreheatingonandoff
(symbol Ilightsup).Asaresult,thewaterispreheated
toatempera tureof176 °F(80 °C) beforeentering the
nebulizerspace.Ittakesapprox.10to15minutesforthe
waterinthebase towarmup.The mistnowleavesthe
humidifieratapleasanttemperatureof104°F(40°C).The
advantageofthis isthat theroomtempera turedoesnot
dropand,inaddition,it significantlyimprovesthewater
qualitymaintenance.

F) Automatic mode and Sleep mode

Theautomaticandsleepmodescanbeactivatedbypres
singbuttonF.Bypressingthebuttononce,theautomatic
functionisswitchedon(symbol Jappearsonthedisplay),
maintainingtheoptimum humiditysubjectto thetempe
rature.Control takes place by means of output quantity
andpresettargetvalue.Bypressingthebuttontwice,the
sleepfunctionis switchedon (symbol Kappearson the
display),thetargethumidityis50–65%;theoperationtime
issetat6hours;theheatingisswitchedonandthedisplay
brightnessisautomaticallydimmed.Inaddition,theoutput
quantityisalsocontrolledsubjecttothedifferencebetween
thetargetvalueandtheactualvalue.
Thehygrostatandmistoutputsettingscannotbechanged
ineithermode.IfthebuttonsBorDarepressed,theunit
willnolongerbeinautoorsleepmode.

G) Timer Indicator

H) Mist Output Indicator

I) Pre-heating Indicator

J) Automatic Mode Indicator

K) Sleep Mode Indicator

L) Empty indicator

Thewaterleveliseasyto see,thankstothetransparent
watertank.Theappliancealsoalertsyouwhenthewater
tankisempty.Theemptyindicatorisilluminated(symbolL).
Pleasereadthechapter«Fillingthetank»formoreinforma
tion.ThesymbolLmaystayilluminatedforsomeseconds
witharefilledtankuntilthebaseisfilledwithwater.

M) Cleaning indicator

IfsymbolM«CLEAN»appearsonthedisplay,theappliance
shouldbecleanedasrecommendedby themanufacturer.
Thissymbolcomes onautomatically every2weeks, de
pendingonthelevelofuse.The display can be reset by
holding down button A until the light disappears.

N) Dimmer Indicator

DisplayDimmerOff
DisplayDimmerOn
ForinstructionsseebuttonA