Service and maintenance
6
6.1 Basic safety notes
6.1.1 Maintenance
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
6.1.2 SITRANS TF
Note
The device is maintenance-free.
WARNING
Use of a computer in a hazardous area
If the interface to the computer is used in the hazardous area, there is a risk of explosion.
● Ensure that the atmosphere is explosion-free (hot work permit).
WARNING
Dust layers above 5 mm
Risk of explosion in hazardous areas. Device may overheat due to dust build up.
● Remove dust layers in excess of 5 mm.
SITRANS TH320/TH420/TR320/TR420/TF320/TF420
Compact Operating Instructions, 03/2018, A5E41865021-AA 59
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