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SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
165
Service and maintenance
9
9.1
Basic safety information
WARNING
Impermissible repair of the device
•
Repair must be carried out by Siemens authorized personnel only.
CAUTION
Releasing key lock
Improper modification of parameters could influence process safety.
•
Make sure that only authorized personnel may cancel the key locking of devices for
safety-related applications.
9.2
Cleaning
The radar device requires no cleaning under normal operating conditions.
Under severe operating conditions, the antenna may require periodic cleaning. If cleaning
becomes necessary:
●
Note the antenna material and the process medium, and select a cleaning solution that will
not react adversely with either.
●
Remove the device from service and wipe the antenna clean using a cloth and suitable
cleaning solution.
NOTICE
Penetration of moisture into the device
Device damage.
•
Make sure when carrying out cleaning and maintenance work that no moisture
penetrates the inside of the device.