7.3 Maintenance and repair work
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
Risk of e
xplosion in hazardous areas
• Repair must be carried out by Siemens authorized personnel only.
WARNING
Impermissible accessories and spare parts
Risk of e
xplosion in areas subject to explosion hazard.
• Only use original accessories or original spare parts.
• Observe all relevant installation and safety instructions described in the instructions for the
device or enclosed with the accessory or spare part.
WARNING
Improper connection after maintenance
Risk of e
xplosion in areas subject to explosion hazard.
• Connect the device correctly after maintenance.
• Close the device after maintenance work.
Refer to Connecting (Page 41).
7.3.1 SITRANS TF
WARNING
Impermissible repair and maintenance of the device
•
Repair and maintenance must be carried out by Siemens authorized personnel only.
Service and maintenance
7.3 Maintenance and repair work
SITRANS TH100/TH100Slim/TH320/TH420/TR320/TR420/TF320/TF420
Compact Operating Instructions, 07/2021, A5E41865021-AE 75