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INSTRUCTION HANDBOOK
6.13 PHASE 13 – ARCHING CHAMBERS
Actions to be performed
Tools
Torx key
No. 30
Cross screwdriver
Flat screwdriver
221
By means of the torx key unscrew the 2 screws
fixing the arching chamber to the pole. *
224
Manually remove the arc quenching and
the plate from the arching chamber main
structure; operation to be repeated on the
other side of the arching chamber main
structure.
223
By means of the flat screwdriver unhook the 2
appendices fixing the arc quenching and the
plate to the arching chamber main structure.
222
Manually remove the arching chamber.
* 2 addititional screws must be unscrewed on circuit breakers
with V breaking capacity (red circles indicate position of the 2
additional screws)
