Venta AH902 Operation Manual page 17

Reminder/Interval Actions
C CHANGE
HYGIENE DISC
SERVICE
D Recommenda-
tion every 1–2
months or as
required
Recommen-
dation every
3 years
You can carry out the maintenance steps CHANGE FILTER, CHANGE HYGIENE DISC,
SERVICE and CLEANING whenever necessary. When you are finished, simply tap the
relevant RESET button in the maintenance menu
time is reset. The next reminders for the actions performed will be indicated at the
normal intervals.
Any residues in the water tray and on the VentWave™ DISC stack (white, green-yellow
or brown deposits or discolorations) do NOT impair the function of the device.
Open evaporator compartment. Remove VentWave™ DISC stack
and unlock the drive wheel. Remove hygiene DISC and replace
it. Re-assemble the appliance and switch it on. Tap
on the display to access the maintenance menu. Then tap
RESET next to CHANGE HYGIENE DISC and hold for 3 seconds
until the time is reset.
After 3 months, the maintenance button
i
and indicates that this action is necessary.
The service life of a hygiene DISC is approx. 3 months (at con-
tinuous 24-hour operation) and depends on the water hardness,
water quality, daily evaporation performance and number of
operating hours.

You can use the Venta ReNew recycling program to return
the hygiene DISC to us (see RECYCLING & DISPOSAL).
Empty the residual water out of the water tank and water tray.
Clean the water tray, VentWave™ DISC stack and water tank un-
der running water. Fill the water tank up to the MAX marker with
fresh water. Re-assemble the appliance and switch it on. Tap
button on the display to access the maintenance menu. Then
tap the RESET button next to SERVICE and hold for 3 seconds
until the time is reset.
After 14 days, the maintenance button
i
and indicates that this action is necessary.
Open filter compartment, remove coarse dust filter and vacuum
or rinse it off. Please note: The coarse dust filter must be com-
pletely dry before you install it. Re-assemble the device.
To ensure the full performance of the UVC lamp, you should
change the bulb every 3 years.
Note: UVC lamp is on for 4 h per day or 1 h in timer mode.
lights up in red
lights up in red
and hold for 3 seconds until the
button
EN 17