Siemens NXAIR Operating Instructions Manual page 117

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. 192: Lifting the operating
slide
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.
Turn the double-bit key counter-clockwise as far as it will go (that is 90°) to interlock the
contactor truck.
Fig. 195: Turning the racking crank
counter-clockwise
Remove the double-bit key.
To close the actuating opening, push the operating slide down as far as it will go.
Fit a padlock (optional) to the operating slide and close it.
✓
The contactor truck has been racked from service position to test position.
110-0134.9 / 14
Operating the contactor panel with panel width 435 mm
Fig. 193: Turning the
double-bit key
counter-clockwise
Fig. 196: Turning the double-bit key
NXAIR / ≤ 40 kA
Fig. 194: Operating shaft for
racking crank
counter-clockwise
117