Flowserve NRS 2-3 - Manual (Page 16)

16
After applying mains voltage LEDs and do not light up
Fault: The mains voltage is not applied across the equipment.
Remedy: Apply mains voltage. Check installation of the 19" slide-in unit.
Fault: The internal fuse is defective.
Remedy: Remove the 19" slide-in unit and replace the internal fuse.
Incorrect measuring current between electrode terminal 2 and NRS terminal
5 or A22 defective
Fault: The level transmitter NRGT 26-1s is defective.
Remedy: Check level transmitter (see installation instructions NRGT 26-1s).
Level switch does not work properly despite correct measuring current
Fault: The level switch NRS 2-3 is defective.
Remedy: Replace level switch.
Annex
Fault finding list for troubleshooting
Warning
The terminal strip of the NRS 2-3 is live during operation. This presents the
danger of electric shock.
Cut off power supply before inserting or removing the 19" slide-in unit and
before carrying out any installation or maintenance work.
B C