24 English 5.906-432.0 Rev. 00 (06/15)1 Position marking2 Service switchSetting the water hardnessThe setting of the liquid softener dosing is done in accord-ance with the local water hardness (ask your local watersupply company or determine by means of a hardnesstester).NoteWhen using RM 111, do not fall below position 3. Observesetting DIP 4 on the printed circuit board.Service positionIn the "Service" position the settings of the device can beedited by means of the service switch and the control pan-el.From the "Service" position, the service switch can beturned a little further to the "SET" position. From this posi-tion, the switch returns to the "Service" position after re-leasing it. The "SET" position merely fulfils a pushbuttonfunction.NoteThe setting options are described in Chapter 7.4 or 7.24"Service functions with LED display".6.8 Service switchHardness tester 6.768-004.0Water hardness Adjustments ° dHvery soft OFF position up to 3.0soft Position 1 3,1 - 7,0medium Position 2 7,1 - 14,0hard Position 3 14,0 - 21,0very hard Position 4 > 21,0
