vds Italy BERTA Manuel Technique D'installation page 20

SPRING REGULATION
230V VERSION
Ÿ Effectuate manually the opening
operation.
Ÿ Acting on the bottom rod, put a light
tension on the spring.
24V VERSION
Ÿ Release the operator
Ÿ Acting on the lower tie nut, put the spring
in tension until the rod is balanced at 45°
and the trapezoidal bracket will remain
horizontal to the ground.
Ÿ Block the motor
The trapezoidal bracket has four holes
which regulate the force of the spring
according to the length of the bar. The
force of the spring is reduced the more it is
placed internally
LIMIT SWITCHES REGULATIONS
It's possible to adjust the limit switches
position, both the mechanical
(placed inside the barrier)
and electrical ones (easily accessible,
as they are placed under the superior
cover).
N.B. When one of the mechanical
end-stroke switches is repositioned,
it is necessary to relocate the
electronically controlled one
accordingly, and then repeat the
stroke selecting procedure
.
Spring
adjustment holes.
Right side
spring
adjustment holes.
Left side
Bottom
rod
Nut
Microswitch
electric limit
switches
Adjustment screw
for the mechanical
limit switches
Staffa
trapezoidale