Siemens SIPROCESS GA700 Kompaktbetriebsanleitung Seite 185

Loss of explosion protection
Danger of explosion in hazardous areas if the device is open or not properly closed.
• Close the device as described in Chapter "Installing (Page 25)".
Vibrations at the installation location
Explosion hazard
For ignition protection type Ex ec and Ex py, vibrations of more than 5 m/s² can cause an
explosion.
• Make sure that the device is installed in a low-vibration location.
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.
Absence of pre-purging
Danger of explosion in hazardous areas.
An explosive atmosphere existing in a device with pressurized enclosure (type of protection
Ex p) can result in an explosion during commissioning.
• Make sure that the device is pre-purged before it is commissioned.
• Make sure that the purging time, quantity and medium are correctly observed. Refer to
Devices in explosion-proof design
Compact Operating Instructions, 11/2019, A5E35134047-04
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accordance with the directives.
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the information in Chapter "Technical specifications (Page 93)".
6.2 Safety instructions for hazardous areas
Commissioning
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