Kärcher SC 4 Premium, Quick Reference, Page: 10 / 18

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As limes cale builds up on the boiler walls, we recom-
mend to de scale the boiler in the following intervals (RF
= reservoir fillings):
Note
The hardness of the tap water can be inquired at your
water management office or the municipal utilities.
 Disconnect the mains plug from the socket.
 Allow the steam cleaner to cool down.
 Empty the water reservoir.
 Remove the accessories from the accessory com-
partments.
Illustration
 Open the maintenance lock. For this, place the
open end of an extension pipe onto the mainte-
nance lock, lock it into the guide and unscrew it.
Illustration
 Completely empty the steam boiler to remove exist-
ing water.
 Use KÄRCHER decalcifying agents for descaling.
Please follow the dosing instructions on the pack-
aging when preparing the descaler.
 Pour the descaling solution into the boiler and allow
it to react for approximately 8 hours.
 Completely empty the descaling solution after 8
hours. A small amount of the solution will remain in
the boiler. Therefore, you should rinse the boiler
two to three times with cold water to remove any
residues of the descaler.
Illustration
 Completely empty the steam boiler to remove exist-
ing water.
 Allow the storage compartment for the mains cable
to dry.
 Screw the maintenance lock in using the extension
pipe.
 Fill the water reservoir
 The steam cleaner is ready to use.
Note
The floor cleaning cloth and the cloth cover have been
pre-washed and can be used immediately for working
with the steam cleaner.
 You can wash dirty floorcloths and cloth covers in
the washing machine at 60°C. Do not use a liquid
softener as this would affect the ability of the cloths
to pick up dirt. You may tumble dry the terry cloths.
The microfiber cloths are not suitable for the tumble.
Often, failures have simple causes and you can do the
troubleshooting yourself using the following overview. If
you are in doubt or if the failure is not listed here please
contact the authorized customer service.
 Descale the steam boiler.
No water in the water reservoir.
 Fill the water reservoir up to the "MAX" marking.
No water in the steam boiler. Overheating protection of
the pump was triggered.
 Turn off the appliance.
 Fill the water reservoir
 Turn on the appliance.
Water reservoir has not been inserted properly or is cal-
cified.
 Remove the water reservoir and rinse it.
 Insert the water reservoir and press downwards un-
til it arrests.
Steam switch is secured with the lock / child-proof lock.
 Move the selector switch for the steam volume to
the front.
 Descale the steam boiler.
Subject to technical modifications!
Descaling the Steam Boiler
Degree of hardness ° dH mmol/l TF
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
Care of the Accessories
Troubleshooting
Long heating-up time
Steam boiler is decalcified
No steam
Indicator lamp - "water shortage" blinks red and
signal sounds
Indicator lamp "water shortage" glows red
Steam lever cannot be pressed anymore
High water output
Steam boiler is decalcified
Technical specifications
Power connection
Voltage 110
60
V
Hz
Protection class IPX4
Protective class I
Performance data
Heating output 1600 W
Operating pressure max. 0,35 MPa
Heating time 4 Minutes
Steam volume
Continuous steaming
Steam push max.
50
110
g/min
g/min
Filling quantity
Water reservoir 0,8 l
Boiler capacity 0,5 l
Dimensions
Weight (without accessories) 4,1 kg
Length 350 mm
Width 280 mm
Height 270 mm