User guide

l Wrong characteristics selected
à Set the correct characteristics on the characteristics
reversal switch (overfill protection; dry run protection).
Wiring should be carried out according to the quiescent
current principle.
? Signal lamp flashes red
l Fault in the electronics
à Exchanging the electronics module
? Signal lamp flashes red
l instrument defective
à Exchange instrument or return instrument for repair
7.3 Instrument repair
If a repair is necessary, please proceed as follows:
You can download a return form from our website
http://www.
krohne-mar.com/fileadmin/media-lounge/PDF-Download/
Specimen_e.pdf.
By doing this you help us carry out the repair quickly and
without having to call back for needed information.
l Print and fill out one form per instrument
l Clean the instrument and pack it damage-proof
l Attach the completed form and possibly also a safety data
sheet to the instrument
OPTISWITCH 5200 C, 5250 C - with NAMUR output 23
Maintenance and fault rectification
30434-EN-060831