Flowserve NRG16-12 - Manual (Page 17)

7
Apply mains voltage to level switch NRS -8.
Commissioning
Check whether the NRG …-2 and the associated controller NRS -8 are wired in accordance with
the wiring diagram. Fig. 15, Fig. 16
Check wiring
Apply mains voltage
Wiring
– continued –
Tools
■
Screwdriver for cross-recess head screws, size 
■
Screwdriver for slotted screws, size 2.5, completely insulated according to DIN VDE 0680-
■
Open-end spanner A. F. 8 (9)
Voltage table
Use this voltage table as a reference when checking whether the level electrode is submerged or if
there is a malfunction. Please take the wiring diagram of the electrode NRS -8 into account.
Fig. 15, Fig. 16
Note
■ The self-checking routine of the amplifier NRS -8 reduces U
-2
every 40 seconds to
0 volt!
U
-2
2 V
eff
C=0.3 cm -
0 µS/cm 0.5 µS/cm
U
-2
0 V
eff
C=0.3 cm -