Installing The Rear Walls On The Connection Duct - Siemens NXAIR M Operating Instructions Manual

Accessing the connection compartment through the rear

20.4 Installing the rear walls on the connection duct

186
DANGER
Electric shock
To perform any kind of activities inside or near the connection duct of a panel, you
must ensure that the connection duct is safely isolated from supply. Without
isolation from supply, the cables in the connection duct will be live at operational
high voltage.
Observe the Five Safety Rules.
Verify safe isolation from supply.
Make sure all openings on the rear side are closed by fixing bolts before
the panel is put into operation again.
Do not operate the feeder earthing switch during any activities inside or
near the connection duct.
CAUTION
Sharp edges
The metal parts of the rear walls may have sharp edges.
Put on personal protective equipment.
CAUTION
High weight
The upper rear wall is heavy.
Mount the upper rear wall absolutely with 2 persons.
NOTICE
Danger due to damages
Possible malfunctioning and switchgear damage caused by foreign objects:
Remove all foreign objects from the connection duct, for example:

Tools

Unused installation material

Packing material

Cleaning material
NXAIR M 139-2021.9 / 07