Flowserve NRGS15-1 - Manual (Page 21)

21
Commissioning
Check wiring
1. Make sure that the level switch is correctly wired in accordance with the wiring
diagram (see Fig. 6).
2. Make sure that the mains voltage agrees with the specification on the name plate.
Apply mains voltage
1. Undo the housing screws and remove the housing lid .
2. Apply mains voltage. The green LED is illuminated. The other LEDs are lit as a
function of the water level.
3. Check that all functions of the respective switchpoints work correctly. The
LEDs
, , , serve as optical indicators of the associated switchpoints.
(see “Check switching functions“).
4. After establishing the functions replace housing lid and tighten the housing
screws .
G F
5
1 2 3 4
F
G
Danger
The terminal strip of the level switch is live during operation. This presents
the danger of electric shock!
Cut off power supply before opening the housing cover of the level switch!
After removing the housing cover check again that the system is
de-energized.
To check the power supply or the correct functioning, switch the level switch
on again. This work must only be performed by qualified personnel.