Siemens SIPROCESS GA700 Compact Operating Instructions page 63

See also
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 the
Dust in pressurized enclosure "Type of protection Ex p"
Explosion hazard
The ignitable dust atmosphere inside the pressurized enclosure can lead to an explosion.
Before usage in dust atmospheres in Zones 21 and 22:
• Ensure that the interior of the device is completely dust-free.
• Remove the dust layers manually from the enclosure surface, for example by using a
Devices in explosion-proof design
Compact Operating Instructions, 01/2022, A5E35134047-11
WARNING
WARNING
accordance with the directives.
WARNING
information in Chapter "Technical specifications (Page 83)".
WARNING
compressed air gun. Cleaning by pre-purging is not permitted.
6.2 Safety instructions for hazardous areas
Commissioning
63