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Service and maintenance
9.3 Maintenance and repair work
SITRANS LR250 (PROFIBUS PA)
166
Operating Instructions, 08/2014, A5E32221386-AC
WARNING
Electrostatic charge
Danger of explosion in hazardous areas if electrostatic charges develop, for example, when
cleaning plastic surfaces with a dry cloth.
•
Prevent electrostatic charging in hazardous areas.
9.3
Maintenance and repair work
The device is maintenance-free. However, a periodic inspection according to pertinent directives
and regulations must be carried out.
An inspection can include check of:
●
Ambient conditions
●
Seal integrity of the process connections, cable entries, and cover screws
●
Reliability of power supply, lightning protection, and grounds
WARNING
Maintenance during continued operation in a hazardous area
There is a danger of explosion when carrying out repairs and maintenance on the device in
a hazardous area.
•
Isolate the device from power.
- or -
•
Ensure that the atmosphere is explosion-free (hot work permit).
WARNING
Humid environment
Danger of electric shock.
•
Avoid working on the device when it is energized.
•
If working on an energized device is necessary, ensure that the environment is dry.
•
Make sure when carrying out cleaning and maintenance work that no moisture
penetrates the inside of the device.