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8009441/YN36/V3-0/2015-08| SICK OPERATING INSTRUCTIONS|GM35
Subject to change without notice
MAINTENANCE
8.5 Evaluation unit (EvU)
The evaluation unit is designed for maintenance-free operation over the entire service life
of the measuring system. If the evaluation unit is mounted outdoors, the following simple
checks should be carried out regularly due to the load resulting from changing weather
conditions:
▸ Visual inspection
– Is the enclosure undamaged and the fitting intact?
– Does the enclosure front door open and close easily?
– Is the enclosure window free from moisture?
– Does the illuminated LC display on the evaluation unit function correctly?
Exposed electrical connections
The electrical connections are exposed when the evaluation unit door is open.
Observe the relevant safety regulations.
▸ Open the evaluation unit door and check the following:
– Are the cable connections OK?
– Is the enclosure dry inside?
▸ If any one of these points is negative, clarify the cause when possible.
▸ Carry out the necessary repairs.
If the evaluation unit is damaged (e.g. LC display failure):
▸ Contact SICK AG Service or the local sales representative.