User Manual

l Wrong mode selected
à Set the mode switch on OPTISWITCH 3100 C to
"max". Set the correct mode on the signal conditioning
instrument (A: overfill protection; B: dry run protection).
? Signal lamp flashes red
l Electronics has detected a failure
à Exchange instrument or return instrument for repair
7.3 Exchange the electronics
In general, all oscillators of series WE60 can be interchanged.
If you want to use an oscillator with a different signal output,
you can download the corresponding operating instructions
manual from our homepage under Downloads.
With EEx d instruments, the housing cover must only be
opened if there is no explosive atmosphere.
Proceed as follows:
1 Switch off power supply
2 Unscrew the housing cover
3 Lift the opening levers of the terminals with a screwdriver
4 Pull the connection cables out of the terminals
5 Loosen the two screws with a screw driver (Torx size T10
or slot 4)
2
1
Fig. 13: Loosen the screws
1 Electronics module
2 Screws (2 pcs.)
OPTISWITCH 3100 C - with two-wire output 25
Maintenance and fault rectification
29955-EN-060830