Siemens NXAIR M Operating Instructions Manual page 181

Preconditions

Rear wall available

Corresponding number of sealing brackets, ledges and associated bolting material available:

2 nos. sealing brackets

1 no. horizontal ledge and associated 8 bolts M8x25 with contact washers and plain
washers

2 nos. vertical ledges and a total of 28 bolts M8x20 with contact washers

4 bolts M8x20 with contact washers for fixing the rear wall to the panel base
Procedure
Insert the rear wall (1) at the rear side of the panel and push the wall down using the handle.
Fix the rear wall by screwing the lower bolts in hand-tight:

4 bolts M8x20 with contact washers (2)
Tighten the bolts with torque 25 Nm.
139-2021.9 / 07
Accessing the connection compartment through the rear
NOTICE
Danger due to damages
Possible malfunctioning and switchgear damage caused by foreign objects:
Remove all foreign objects from the connection compartment, for
example:

Tools

Unused installation material

Packing material

Cleaning material
NOTICE
Cleaning
Possible malfunctioning and damage to the panels caused by pollution.
Before closing the connection compartment:
Clean polluted areas in the connection compartment. To do this, use a
vacuum cleaner and a lint-free cloth. If necessary, moisten the cloth, use a
mild household cleaner, and dry properly at the end.
Some parts and surfaces of the switchgear are greased for functioning.
Do not remove the grease there; do not clean the parts and surfaces.
If greased areas are dirty, clean the dirty area and grease again according
to the maintenance instructions.
NXAIR M 181