20
6.7 Spring fitting
Now proceed with the assembly of the spring, hooking it to the
screw with eyelet and to the hole on the metal sheet at the base
of the cabinet, then carry out a first preload by hand-turning the
central body of the tie rod and the eyelet.
6.8 Bar balancing
45
Continue with bar balancing.
Before balancing the bar, check with the table in paragraph
“3. Optional accessories ”the congruence between the cho
-
sen spring, the accessories to be applied and distance are
adequate. Correct balancing is essential for the barrier to
work properly.
This operation must be carried out only when the bar has been
installed permanently with all its accessories.
operate the manual release (see the “Manual release” chapter) ke
-
eping at a safe distance. The rod must move by itself to 45°, other
-
wise load/unload the spring (if the rod tends to rise above 45° the
spring must be unloaded by turning the central body clockwise; on
the contrary, if it doesn’t reach 45°, the spring must be loaded by
turning the central body counterclockwise). Lower the rod and rele
-
ase
it,
check
that
it
has
reached
45°.
If a load is needed that is greater/lower than that per
-
mitted when balancing, move the eyelet into the hole
on the right or left to increase/decrease the load capa
-
city.
Continue with the electrical connections to the control panel (see the chapter on electrical connections).
Note: check the spring works correctly.
IMPORTANT! For a correct operation of the barrier, when the boom is in vertical position the spring must not
be completely unloaded.
ENGLISH
