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4.5. DERIGGING
For the reverse process the steps to follow are
exactly the opposite to those just described.
After removing the ropes and the secure lock, when
starting to lower the array, it can be useful to consider
the following points:
1. place the trolleys under the array so that the
elements can be put on them in couples and re-
move the locking pins from the front hardware
parts of the last three elements, maintaining
the rear pins in their position (figure 37);
2. continue to lower the array with the hoists and
use the handles to couple the elements with the
trolley (figure 38);
3. when the first two elements are on the trolley,
release the rear pins of the second element,
with the third element still hanging (figure 39);
4. repeat the procedure for each couple of ele-
ments, unplugging the cables and removing
any other accessory;
5. uncouple the frame bar from the chain hoists
together with the last two array elements and
remove the locking pins.
It is highly recommended to put the hardware both
of the frame bar and of the line array element in the
“REST” position before closing the flight cases to pre-
serve their integrity during transport.
figure 37
figure 38 figure 39
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