24
Action against high-frequency interference
Further information
High-frequency interference can be caused by out-of-phase switching operations. If such interference
occurs and results in sporadic failure, we recommend taking the following action to suppress interfer-
ence:
n
Provide inductive loads with RC combinations as per manufacturer's specifications.
n
Route the connecting cable to the level electrode or level transmitter separately from power lines.
n
Increase the distance from sources of interference.
n
Check the connection of the screen to the central earthing point (CEP) in the control cabinet.
n
Suppress HF interference using hinged-shell ferrite rings.
Replacing/taking the equipment out of service
Disposal
The equipment must be disposed of in accordance with statutory waste disposal provisions.
In the event of faults that cannot be remedied with the aid of this manual, please contact our Technical
Customer Service.
n
Switch off the power supply and
cut off power to the equipment.
n
Remove the upper and lower terminal strips.
Fig. 8
n
Insert a screwdriver between the terminal strip and the front frame, to the right and left of the
arrow markings.
n
Release the terminal strip on the right and left sides, by turning the screwdriver in the direction of
the arrow.
n
Remove the terminal strips.
Fig. 8
n
Release the white sliding fixture at the bottom of the housing and take the device off the
support rail
