Siemens NXAIR M Operating Instructions Manual page 167

Fold the air guide downwards.
Fig. 289: Folding the air guide downwards
Fix the holder of the air guide by screwing the 2 bolts size M8 with contact washers in hand-
tight. Tighten the bolts with torque 25 Nm. Proceed in the same way on the other side.
Fig. 290: Bolts for fixing the air guide
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The vertical partition and the ventilation duct are installed.
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Accessing the connection compartment through the front
HINT
Final procedure steps
Now the panel can be integrated into the course of operation again, for example:
Inserting the withdrawable part in the panel.
Closing the high-voltage door.
De-earthing the feeder.
Racking the withdrawable part to service position.
NXAIR M 167