Opening The Device In Energized State - Siemens SIPROCESS GA700 Compact Operating Instructions

Service and maintenance
7.2 Safety instructions for hazardous areas
7.2.3

Opening the device in energized state

Opening the device in energized state
Danger of explosion in hazardous areas.
• Only open the device in a de-energized state.
• Check prior to startup that the cover, cover locks, and cable inlets are assembled in
Exception: Devices having the type of protection "Intrinsic safety Ex i" may also be opened in
energized state in hazardous areas.
Open enclosure
Danger of explosion in hazardous areas as a result of hot components and/or charged
capacitors inside the device.
Follow these steps when you open the device in a hazardous area:
1. Disconnect the device from the power supply.
2. Make sure you observe the wait time listed on the warning label before you open the device.
3. Carry out a visual check of the sensor inlet and outlet.
Exception: Devices with "Intrinsic safety Ex i" explosion protection type only may also be
opened in an energized state in hazardous areas.
Maintenance during ongoing operation in a hazardous area
There is a danger of explosion when carrying out repairs and maintenance on the device in a
hazardous area.
• Isolate the device from power.
• Alternatively: Make sure that the atmosphere is explosion-free (hot work permit).
• Wait 10 minutes after disconnecting the power supply before you open all doors and covers.
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WARNING
accordance with the directives.
WARNING
WARNING
Devices in explosion-proof design
Compact Operating Instructions, 01/2022, A5E35134047-11