Nivus OCM F, Instruction Manual

Page: 93 / 110

Troubleshooting
OCM F - rev. 05 / 06.04.2018 page 93
Error Possible
Reason Correction
Display >Error
Doppler Sensor< Connection Check cable connection.
Wiring on terminal strip switched?
Cables firmly connected to plugs (re-tighten
screws, pull at cable ends)?
Insulation of single wires unintentionally clamped
in?
Communica-
tion Communication to sensor disturbed.
Can be checked by choosing menu I/O >v-Sensor
Info<. Sensor should be indicated in the first line of
the following screen.
Check cables for interruption or loose connection.
Check sensor for mechanical damage.
Unstable
measurement
values Hydraulically
unsuitable
measurement
place Check quality of measurement place by using the
graphic flow profile display.
Relocate the sensor to a hydraulically more suita-
ble place (extend calming section).
Remove soiling, sedimentation or obstructive con-
structions in front of the sensor.
Straighten the flow profile by installing appropriate
baffle plates and calming elements, flow straight-
eners or similar upstream of measurement.
Increase damping.
Sensor Check sensor position (towards flow direction,
horizontal installation) and correct installation
depth.
Check sensor for sedimentation or obstructions.