Siemens SITRANS TH Series - Service and Maintenance

SITRANS TH/TR/TF
A5E32520693-01, 06/2013
25
Note
Warming-up
To obtain exact measured values, the transmitter needs to be allowed to warm up for five minutes or so after the power
supply has been switched on.
6
Service and maintenance
6.1
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
WARNING
Impermissible repair and maintenance of the device
●
Repair and maintenance must be carried out by Siemens authorized personnel only.
WARNING
Impermissible repair of explosion protected devices
Danger of explosion in areas subject to explosion hazard.
●
Repair must be carried out by Siemens authorized personnel only.
Cleaning the enclosure
● Clean the outside of the enclosure and the display window using a cloth moistened with water or a mild detergent.
● Do not use aggressive cleaning agents or solvents. Plastic components or painted surfaces could be damaged.
WARNING
Electrostatic charge
Danger of explosion in hazardous areas if electrostatic charges develop, for example, when cleaning plastic enclosures
with a dry cloth.
●
Prevent electrostatic charging in hazardous areas.