Siemens NXAIR M Operating Instructions Manual page 187

Preconditions

Upper and lower rear wall available

Corresponding number of ledges and associated bolting material available:

1 no. horizontal ledge

4 nos. vertical ledges

Bolts size M8x20 with contact washers and plain washers
Procedure
Insert the lower rear wall (4) at the rear side of the panel and push it down using the handle.
Fix the rear wall by screwing the lower bolts in hand-tight:

4 / 6 bolts M8x20 with contact washers (6)
Insert the upper rear wall (2) at the rear side of the panel and push it up using the handle.
Fix the wall by screwing the bolts in the upper area hand-tight:

4 / 5 bolts M8x20 with contact washers (1)
Install one of the 4 vertical ledges (5). Fix it by screwing the bolts in hand-tight:

9 / 19 bolts M8x20 with contact washers and plain washers size 8
acc. to ISO 7093
Proceed in the same way with the other vertical ledges.
139-2021.9 / 07
Accessing the connection compartment through the rear
NOTICE
Cleaning
Possible malfunctioning and damage to the panels caused by pollution.
Before closing the connection duct:
Clean polluted areas in the connection duct. 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 187