25
NRS 1-50 For TWO electrodes - USA - Installation & Operating Manual -
850694-00
Bringing into service
Changing the configuration
Note
■
If only one level electrode is switched on, only the operating state and alarm
LEDs of the relevant channel light up.
To operate with one level electrode only – e.g., in emergency mode – please change the settings as
follows:
■
Switch off the mains supply.
■
Undo the right and left fastening screws and detach the lower terminal strip
Fig. 3
2
3.
■
Set code switch
4
or
5
to ON position, depending on which electrode you wish to deactivate.
■
Put the terminal strip back on and tighten the fastening screws.
■
Switch the mains supply back on. The equipment restarts.
Code switch
4
Code switch
5
S 1
S 2
S 1
S 2
Level electrode 1 active
OFF
OFF
Level electrode 1 passive
ON
ON
Level electrode 2 active
OFF
OFF
Level electrode 2 passive
ON
ON
4
White toggle switch
5
White toggle switch
DANGER
There is a risk of electric shock during work on electrical systems.
■
Switch off the voltage to the plant before you install the equipment.
■
Check that the plant is not carrying live voltage before commencing work.
