Bornay WIND 13+ Manual De Instalación página 39

Finally, on the lower front side, using the two flanges to anchor, we insert the
brass tube (102 mm long x 10 mm exterior diameter), one M6x120 bolt, with
an M6 wide series washer on each side, on the inner side of the nacelle
between the two flange-forming flaps. Finally, secure using a washer and
auto-blocking nut.
Blades and Frontal cone
The blades, made reinforced carbon fiber/glass make direct contact with the
wind. They are highly stressed. Their aerodynamics, specifically designed for
Bornay wind turbines, makes the alternator turn faster or slower depending
on wind speed.
Blade assembly is carried out by securing them to the hub, with the relief
logo towards the rear part, i.e. facing the alternator.
The two external bolts will be M10x55, while the central internal bolt - now
installed - is M10. Once installed, the blades must be adjusted.
Without using any nuts or washers, the aluminum hub reinforcement layer is
assembled, and this will give the assembled parts more solidity. To secure
this reinforcement we use wide-series washers and normal M10 nuts into the
two internal bolts. With the help of a dynamometric Allen key, these two
nuts must be initially tightened to 2 kg. Once tightened, both nuts must then
be retightened to 2.5 kg.
The next step, having retightened both all nuts, is to insert the frontal nose
cone into the four external bolts. Once installed, another wide-washer and M-
10 self-blocking nut are applied. With the help of a dynamometric Allen key,
these two nuts must be initially tightened to 2 kg. Once tightened, both nuts
must then be retightened to 2.5 kg.
Observe the next illustrations carefully.
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