7) Beam balancing
−
Release the beam with manual release, so
that it is free to be opened and closed
manually (Fig.8).
−
Place the beam at approx. 45°.
−
Loosen or tighten the spring stretching nut
until the spring counterbalances the weight of
the 45° beam (Fig. 8). The best balancing
position is obtained when the beam reaches
the position shown in Fig. 8.
−
After having obtained the balancing, lock the
nuts of the spring stretcher with the counter
nut and re-block the motor.
Should the balancing of the beam not be
perfect and the length of the spring stretcher
(T) be too long, cut it about half of its length.
Spring
nut
stretching
Anchoring
lock nut
8) Beam levelling
Note: this operation must be carried out only if
the beam is not perfectly horizontal (closing
stage) or vertical (opening stage) at the end of its
stroke.
−
Release the beam with the special manual
release so that it is free to open and close
manually.
−
Release the screws of the limit switch on
unscrewing the nuts on the mechanical stops
(fig.9).
−
Loosen or tighten the stop screws so that the
beam is released in its vertical position
(opening stage) (Fig. 9) and horizontal position
(closing stage).
−
After having executed the levelling lock the
screws of the limit switch tightening the nuts on
the mechanical stops and re-lock the beam.
Stop adjustment
screws
Lock nuts
Rocker
arm
English
Sistemi Elettronici
di Apertura Porte e Cancelli
International registered trademark n. 804888
®
4
°
5
T
Fig. 8
Fig.9
16
Cod. 67411465 Rev.00 - 12/2012
