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4. Control Unit
Warning displays
With power supply
Optical probe/
potential free contact LED LED LED audible remote
Contact relay
„Power“ „Alarm“ „NLevel“
Alarm Alarm
Alarm level Exceeded tripped (on) on on on
on on
Power outage / back-up battery mode
Optical probe /
potential free contact LED LED LED audible remote
Contact Relay
„Power“ „Alarm“ „Level“ Alarm Alarm
Alarm level exeeded tripped (on) off blinks every 2 s blinks every 2 s on on
Control unit display and operational buttons description
Display LED Color
Duty
„Power“ green Power supply ok
„Alarm“ red Fluid exceeds Alarm level
„Niveau/Level“ orange Fluid exceeds Alarm level
Operational buttons
Button „Alarm“ Turns off audible alarm,
Acknowledges warnings and faults
Checks the operational function of the audible and visual alarms and
the function of the potential free contact.