Kärcher HDS 7/12 M, Service Manual

Page: 27 / 131

English 5.906-432.0 Rev. 00 (06/15)
27
1 Liquid softener reservoir
2 Level sensor
3 Dosing valve
The feed of the liquid softener takes place in accordance
with the setting on the service switch. The setting is de-
scribed under 6.8 "Service switch". The feed only takes
place in the programme switch position "ECO" and "Warm
water" at a set water temperature
≥
50°C.
Bottle counter is increased by 1 after 2000 impulses.
The empty message takes place via the level sensor in the
liquid softener tank or via the write-read electronics in com-
bination with the tag on the bottle. The liquid softener bottle
must be inserted within 5 operating hours, otherwise the
burner switches off for the protection against calcification
and a corresponding malfunction appears.
The burner operation is only enabled again by inserting a
new original liquid softener bottle. A bottle that has already
been empty but refilled will not be accepted.
The bottle works with an internal vacuum. If the bottle is
damaged or a hole is drilled into the bottle, it will drain with-
in a short period of time.
During burner operation with hard water without liquid sof-
tener malfunctions due to lime deposits must be expected.
Note
The dosing unit must not be switched off when using RM
111.
RM 111 was specially developed for the protection against
black water. In order that the corrosion protection works
optimally, it is also added in cold water operation. RFID
recognises RM 111 over the day on the bottle and doses
accordingly.
6.10.2 Feed via RFID (Europe variant)