Siemens SITRANS LR500 Series - Enclosure Opening Safety

10.3.1 Enclosure open
WARNING
Enclosure open
Risk of e
xplosion in hazardous areas.
To open the device in a hazardous area, isolate the device from power.
Exception: Devices exclusively having Intrinsic safety (Exi) may be opened in an energized
state in hazardous areas.
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49).
WARNING
Hot, toxic, or corrosive process media
Risk of injur
y during maintenance work.
When working on the process connection, hot, toxic, or corrosive process media could be
released.
• As long as the device is under pressure, do not loosen process connections and do not
remove any parts that are pressurized.
• Before opening or removing the device ensure that process media cannot be released.
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.
Service and maintenance
10.3Maintenance and repair work
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA 151