Siemens NXAIR M - Accessing the Connection Compartment through the Rear Side of the Panel; Installing the Rear Wall on the Connection Compartment

Operating the circuit-breaker panel
50 NXAIR M 139-2021.9 / 07
Procedure
Turn the access cover of the operating shaft aside using the rotary button located over it.
Fig. 70: Rotary button on high-voltage door
Push the hand crank onto the operating shaft.
Hold the freewheel (1) and turn the hand crank (2) clockwise approx. 25 turns until the
CHARGED indication appears in the inspection window.
Fig. 71: Hand crank on high-voltage door
The closing spring is latched in automatically. The spring energy store indicator changes
from NOT CHARGED to CHARGED.
Remove the hand crank.
Close access cover of operating shaft using the rotary button.

Manual charging of the spring energy store is completed. The energy required for the
operating sequence (OPEN-)CLOSE-OPEN is stored in the spring energy store.
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