Result
The associated registration entry for the USB modem is deleted.
10.3.2
SITRANS TF
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 explosion in hazardous areas
• Repair must be carried out by Siemens authorized personnel only.
CAUTION
Hot surfaces
Risk of burns during maintenance work on parts having surface temperatures exceeding 70 °C
(158 °F).
• Take corresponding protective measures, for example by wearing protective gloves.
• After carrying out maintenance, remount touch protection measures.
10.3.2.1
Checking the seals
Inspect the seals at regular intervals
1. Clean the enclosure and seals.
2. Check the enclosure and the seals for cracks and damage.
3. If necessary, lubricate the seals or replace them. Use only original seals (
).
Service and maintenance
10.3 Maintenance and repair work
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
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