Siemens NXAIR Operating Instructions Manual page 158

Operating the contactor panel with panel width 600 mm
Procedure
To release the actuating opening for the double-bit key, lift the operating slide and hold it.
To release access to the contactor truck, insert the double-bit key and turn
counter-clockwise as far as it will go (that is 90°).
Fig. 277: Lifting operating slide and
Push the racking crank for moving the contactor truck onto the operating shaft, and turn
counter-clockwise as far as it will go.
Remove the racking crank for moving the contactor truck.
158
NOTICE
Maloperation
All interlocks are only released when the contactor truck is in a stable end
position.
Rack the contactor truck absolutely until end position.
turning the double-bit key
counter-clockwise
NXAIR / ≤ 40 kA
Fig. 278: Operating shaft for
racking crank
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