Maintenance and care – Karcher SC 3-100 B User Manual
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Continuous steaming: Pull the latch 
for the steam switch toward the rear un-
til it locks in. Steam will escape continu-
ously. To unlock, push the lock forward.
Direct the first burst of steam at the start 
of the ironing process or after ironing 
breaks at a separate piece of cloth until 
the steam is emitted evenly.
You can hold the iron in an upright posi-
tion to apply steam to curtains, dresses, 
etc.
Note: Even if you iron without steam, there 
must be water in the boiler.
Adjust the temperature of the iron ac-
cording to the garment you want to iron.
Note: Please observe the ironing and 
washing instructions in your garment.
As soon as the indicator lamp of the 
heater of the iron switches off, you can 
start ironing. 
ƽ
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.
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. ).
Note: If you always use usual commercial 
distilled water it is not necessary to descale 
the boiler.
As limescale builds up on the boiler walls, 
we recommend to descale 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 device to cool down.
Remove the safety cap from the device.
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. 6.295-047) to decalcify the 
water. Please follow the dosing instruc-
tions on the packaging while using the 
decalcifying solution.
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 safety lock on the appli-
ance 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. ).
Dry ironing
•
Synthetics
•• Wool, silk
••• Cotton, linen
Maintenance and care
Rinsing the boiler
Descaling the boiler
Degree of hardness ° dH
mmol/l RF
I
soft
0- 7
0-1,3
55
II medium
7-14
1,3-2,5 45
III hard
14-21 2,5-3,8 35
IV very hard
>21
>3,8
25
21
EN