Karcher SC 2-550 C EU - Manual (Page 20)

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Danger
Always disconnect the mains plug and al-
low the steam cleaner to cool down before
performing any maintenance work.
Rinse the steam cleaner boiler at the latest
after 10 boiler fillings.
 Disconnect the mains plug from the
socket.
 Allow the steam cleaner to cool down.
 Empty the water reservoir.
 Remove the accessories from the ac-
cessory compartments.
Illustration
 Open the maintenance lock. For this,
place the open end of an extension pipe
onto the maintenance lock, lock it into
the guide and unscrew it.
 Fill the boiler with water and shake it
strongly. This dissolves lime scaling re-
siding on the boiler bottom.
 Completely empty the steam boiler to
remove existing water (see Fig. ).
As limes cale builds up on the boiler walls,
we recommend to de scale the boiler in the
following intervals (RF = reservoir fillings):
Note: Please contact your Conservancy
Board or the local water supply company to
inquire about the hardness of your water.

Disconnect the mains plug from the
socket.
 Allow the steam cleaner to cool down.
 Empty the water reservoir.
 Remove the accessories from the ac-
cessory compartments.
Illustration
 Open the maintenance lock. For this,
place the open end of an extension pipe
onto the maintenance lock, lock it into
the guide and unscrew it.
 Completely empty the steam boiler to
remove existing water (see Fig. ).
ṇ
Warning
Only use products approved by KÄRCHER
to exclude any damages of the appliance.

User the KÄRCHER decalcifier sticks
(order no. 6.295-206) to decalcify the
water. Please follow the dosing instruc-
tions on the packaging while using the
decalcifying solution.
ṇ
Caution
Use caution when filling and emptying the
steam cleaner. The descaling solution can
have an aggressive effect on delicate sur-
faces.

Pour the descaling solution into the boil-
er and allow it to react for approximately
8 hours.
ṇ
Warning
Do not screw the maintenance lock onto
the appliance during the decalcifying.
Do not use the steam cleaner as long as
there is decalcifying agent in the boiler.

Completely empty the descaling solu-
tion after 8 hours. A small amount of the
solution will remain in the boiler. There-
fore, you should rinse the boiler two to
three times with cold water to remove
any residues of the descaler.
 Completely empty the steam boiler to
remove existing water (see Fig. ).
 Allow the storage compartment for the
mains cable to dry.
 Screw the maintenance lock in using
the extension pipe.
 Fill water reservoir (see page 8).
 The steam cleaner is ready to use.
Maintenance and care
Rinsing the steam boiler
Descaling the Steam Boiler
Degree of hard-
ness
° dH mmol/l RF
I soft 0- 7 0-1,3 100
II medium 7-14 1,3-2,5 90
III hard 14-21 2,5-3,8 75
IV very hard >21 >3,8 50
20 EN