Maintenance and care – Karcher HDC advanced User Manual
Page 24
 
24 English
ṇ
DANGER
Always disconnect the mains plug and allow 
the steam cleaner to cool down before per-
forming any maintenance work.
Note: If you always use usual commercial 
distilled water it is not necessary to descale 
the boiler.
Rinse the steam cleaner boiler at the latest 
after 5 boiler fillings. 
Î
Fill the boiler with water and shake it 
strongly. This dissolves lime scaling re-
siding on the boiler bottom. 
Î
Empty water out.
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.
Î
Disconnect the mains plug from the 
socket.
Î
Completely empty the steam boiler.
ṇ
WARNING
Only use products approved by Kärcher to 
exclude any damages of the appliance.
Î
User the Kärcher decalcifier sticks (order 
no. 6.295-206) for decalcifying the water. 
Please follow the dosing instructions on 
the packaging while using the decalcify-
ing solution. 
ṇ
Caution
Use caution when filling and emptying the 
steam cleaner. The descaling solution can 
have an aggressive effect on delicate sur-
faces.
ṇ
WARNING
Do not screw the steam boiler cap on the ap-
pliance during the descaling. Do not use the 
steam cleaner as long as there is descaling 
agent in the boiler.
Î
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.
Î
The steam cleaner is now ready for use 
again.
Allow the accessory parts to dry completely 
before storing them.
Î
Do not place the floor nozzle (H1), the 
manual nozzle (E1), and the round brush 
(D2) onto the bristles during the cooling 
and drying process to avoid a deforma-
tion of the bristles.
Note: The floorcloth and the terry cloth cov-
er have been pre-washed and can be used 
immediately for working with the steam 
cleaner.
Î
You can wash dirty floorcloths and terry 
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 
cloths.
Maintenance and Care
Rinsing the boiler
Descaling the boiler
Degree of hardness
° dH
mmol/l
KF
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
Care of the Accessories