UK
9
8.3 Lock / unlock the unit
The unit can be locked electronically to prevent unintentional settings�
Locking
► Press both setting buttons simultaneously for 10 s in the operating mode�
> The LED flashes green�
> After the time (> 10 s) has elapsed, the colour of the LED changes from green
to yellow (flashing) and the unit is locked�
Unlocking
► Press both setting buttons simultaneously for 10 s in the operating mode�
> The LED continues to indicate the current operating status (no reaction of the
LED)�
> After the time (> 10 s) has elapsed, the LED flashes green and the unit is
unlocked�
On delivery: unlocked�
9 Operation
When the supply voltage has been applied, the unit is in the operating mode� It
carries out its measurement and evaluation functions and switches the output�
Operation indication by LED:
LED
Status / function
Green
unit ready for operation, sensor zone covered (output open (OFF))
Yellow
unit ready for operation, sensor zone not covered (output closed (ON))
10 Maintenance, repair, disposal
Recommended maintenance:
► Check the probe for build-up from time to time, clean it in case of strong soiling�
After removal of the unit or a change of media with dielectric constants that
differ greatly (e�g� oil / water) another adjustment should be carried out�
It is not possible to repair the unit�
After use dispose of the unit in an environmentally friendly way in accordance with
the applicable national regulations�
