
9
CAUTION: WE STRONGLY REC-
OMMEND THAT YOU CLEAN THE
BOILER ONLY AFTER THE APPLI-
ANCE HAS COOLED DOWN, PAR-
TICULARLY AFTER IT HAS BEEN
TURNED OFF FOR A MINIMUM OF
5 HOURS AND THE POWER CORD
HAS BEEN DISCONNECTED.
TheTrueTemp Technology makes it pos-
sible to use distilled or osmosis water
in your Thermostar (contrary to many
other commonly available steam clean-
ing systems). It is therefore not neces-
sary to decalcify the appliance. If you
use calcium-free water and the main-
tenance display indicates “CALC” it is
okay to just turn the display off (see *1).
The appliance is equipped with a main-
tenance alert system that is activated
when the “CALC” is displayed alter-
nating with the temperature. You can
still complete your cleaning chores
when these letters are displayed. Then
disconnect the appliance from the pow-
er source and allow it to cool off for at
least five hours. Follow the aforemen-
tioned steps to ensure that no steam or
pressure is present in the boiler interior.
1. Fill water reservoir (1) with water.
2. Either place a suitable small tub
underneath the appliance or
position it on top of the kitchen
sink and remove the discharge
cover (8) from the appliance
bottom.
3.Turn on the appliance by activating
the main switch (2) and the Stand-
By switch (1A) (the boiler switch (3)
must be in the off position) and
allow the pump to run for app. 2
to 3 minutes until all water has
drained. Shake the machine a little
in order to completely remove all
calcium deposits.
The boiler switch / heater (3) must
remain off during the entire decalcifica-
tion process. Do not turn the machine
upside down or calcium may enter into
the valves!
If you are using water with high cal-
cium content it is recommended to re-
fill the machine with water again and
repeat the aforementioned steps.
4. Replace the drain cover (8) and refill
the machine with water (1).
5. Turn on the main switch (2) and
the Stand-By switch (1A) and wait
approximately two minutes before
activating the boiler switch (3).The
machine will initially pump water
into the boiler for app. 2 minutes
(you will hear the pump working).
Only then you may turn on the
boiler switch (3).
6. It is recommended that you turn
on the steam button (11A) located
on the handle (activate safety
switch (10 simultaneously) in order
to release the air from the empty
boiler.
*1 Reset the maintenance intervals
CALC
Turn on the machine by activating both
button (2) and (1A), then press and
hold button (1A) for app. 10 seconds.
“CALC” will no longer be displayed
until the next time maintenance is
needed.
This machine is equipped with 2 hour
counters.
In order to read the elapsed hours you
must first turn off the machine using
button (1A) and then activate button
(3). Pressing this button will
alternatively show the elapsed hours
for counter 1 and/or 2.
Keep button (3) depressed while the
machine is turned on. After a few
seconds the display will show the
pressure (in bar) currently present
inside the boiler. The value remains
visible on the display for app. 10
seconds before the temperature is
again shown in °C.
Steam generator maintenance
Removal of calcium deposits within the boiler
Hour counter
Pressure gauge