Descaling - Thermador PROFESSIONAL PSO301M Guide D'utilisation Et D'entretien

Descaling the Steam Oven
Unless you use softened water, you will need to descale
the steam oven at regular intervals. Once you have set
your water hardness level (see page 7), the steam oven
display will automatically inform you when descaling is
needed. Descaling includes an exposure, two descaling
phases, and two rinse cycles, with a total time of 30-35
minutes.
Water Hardness
1 – softened unlimited, no message
2 – soft 400 hours
3 – medium 200 hours
4 – hard 100 hours
5 – very hard 70 hours
If the number of hours of operation is exceeded, the
DESCALE NEEDED message will be displayed each time
when a new heating mode is selected. Select ENTER to
continue. After the Descaling operation is finished, the
operation hour counter will be reset and the message will
no longer be displayed.
You can start DESCALE only when the oven is set to OFF
and is completely cooled down. Once descaling begins, it
should not be interrupted. It is very important that all rinse
cycles are completed. Operation of the appliance will be
blocked if Descale is canceled. The appliance cannot
be operated again until after the first and second
cleaning cycle to ensure that no cleaning agent
remains inside.
NOTE:
Descaling requires 3 start/stop cycles to complete its
operation.
Descaling Phase (cycle 1)
1. Using only the descaling powder recommended for this
oven (BSH part number 573828; obtain from your
retailer or order from http://www.thermador-eshop.com),
mix 32 oz. (1 quart or 0.95 liter) of water with a packet of
powder descaler to produce the descaling solution.
2. Empty the water tank and refill it with the descaling
solution. Return water tank to tank duct.
3. On the display, under the SETTINGS menu, scroll with
the "+/–" buttons to DESCALE and press "ENTER".
The display will then show START DESCALE? YES".
— Toggling with the "+/–" buttons gives the option
START DESCALE? NO. If you press "ENTER"
when the display shows START DESCALE? NO,
the display returns to the previous menu, showing
DESCALE under the SETTINGS menu.
English 32
Operation Hour Counter
4. Press "ENTER" to begin descaling.
— The display will show EXPOSURE PHASE on the
first line and 10:00 on the second line, and the
countdown to 0:00 begins. At this point DESCALE
PHASE is displayed, and with a time of 20 minutes.
At the end of the descaling phase, the countdown is
suspended and a beep will sound. The display will show
CLEAN DISH, FILL TANK on the first line and AND WIPE
OUT OVEN on the second line.
First Rinse (cycle 2)
5. Remove the water tank and wash it out thoroughly, fill it
with water and slide it back in.
6. Using the cleaning sponge provided with your oven (or
a comparable soft cloth or sponge), wipe any water out
of the evaporator dish and wipe out the oven.
Thoroughly wash out the cleaning sponge.
7. The display will now show PRESS ENTER BUTTON.
Press "ENTER" to start the first rinse cycle.
— The display will show 1ST RINSE on the first line.
The countdown will resume.
8. After 20 seconds, a beep will signal the end of the first
rinsing cycle. The display will show CLEAN DISH on
the first line and PRESS ENTER BUTTON on the
second line.
9. Using the cleaning sponge, wipe any water out of the
evaporator dish.
Second Rinse (cycle 3)
10. Press "ENTER" to start the second rinse cycle.
— The display will show 2ND RINSE on the first line.
The countdown will resume again.
11. After 20 seconds, a beep will signal the end of
DESCALE. The display will show DESCALE
FINISHED on the first line and CLEAN DISH on the
second line.
12. Using the cleaning sponge, wipe any water out of the
evaporator dish and wipe out the oven. Thoroughly
rinse out the cleaning sponge.
13. Using a soft cloth, dry the oven cavity.