28
15.720017-V6.0
DMX model 226 en
7.2.7 Commissioning
CAUTION
Carry out a functional check before commissioning!
Functional Check
●
Dip the sensor into water
-
Green LED and red LED are lighting:
Sensor and electronics are ready for operation!
-
One or more LED do not light:
Sensor or electronics are defective!
• Call Grundfos service.
●
Carefully dry the senor.
-
Only the green LED still lights:
Sensor and electronics are ready for operation!
-
the red LED still lights:
Sensor or electronics are defective!
• Call Grundfos service.
!
WARNING
Do not open electronics or sensor!
Repair only by authorized qualified personnel.
7.2.8 Using the Contacts
❏
Terminals 6 and 7 (potential-loaded):
-
e. g. for switching off the dosing pump in case of a diaphragm breakage
➜
Observe Technical Information of the dosing pump!
❏
Terminals 8, 9 and 10 (potential-free):
-
e. g. for triggering an alarm device
7.2.9 Description of the Device
There are two light-emitting diodes (LED) at the electronics.
❏
Green LED:
-
Shows the readiness for operation of the system.
-
It only lights when the sensor is connected to the electronics. If it does
not light in this case, either the sensor or the cable is defective or wrongly
connected.
❏
Red LED:
-
Lights in case of a diaphragm breakage being detected.
-
The green LED continues lighting.