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Instruction manual switches with circular electronic unit 06 December 2021
Mounting the electronic unit
The electronic unit is mounted with either a threaded union or with two set of screws in a V-track. The threaded union is mainly
used for switches operating in cold conditions. The set screws are tightened with a torque of 5 Nm and the threaded union is
tightened firmly by hand or by using pliers to secure a good electrical connection. For cold installations where condensation
occur the treaded union should be used to avoid poor contact between electrical contact between mechanical and electrical
unit.
Fault detection
In case of fault, it is normally enough to replace the electronic part.
Fault
Possible Reason
Correction of fault
No LED is on when the sensor is
in the medium.
No supply to the sensor or defective
cable/plug.
Check the power supply or replace
the power supply cable.
Output and 4xLEDs are
constantly activated, even
though liquid is not in contact
with the sensor.
Water or moisture shortcut the
sensor between the mechanical and
electrical part
Use a sensor with treaded union or
dry the parts and make a suitable
cover against water
Sensor repair:
The sensor electronics are completely embedded and can therefore not be repaired.
In case of faults with the sensor, it will typically only be necessary to replace the electronics.
If you have a faulty product, please contact the HB Products dealers/distributors.
Their complaints procedures must be followed before returning the sensor.
Further information
For further information, please visit our website, www.hbproducts.dk, or send an email to: [e-mail].