14
ENGLISH
ENGLISH
Fig. 22
Fig. 21
Fig. 23
10.
BELT ADJUSTMENT
Check if the belts are too slack or taut.
Belt tension adjustment procedure:
Upper Belt stretching
•Loosen the nut (fig. 24 ref.
).
•Screw the bolt of fig. 24 ref.
to exert tension on the belt or
unscrew it to slacken the belt.
•When you have adjusted tension, tighten the nut (fig. 24 ref.
).
Lower belt stretching
•Loosen the nut (fig. 25 ref.
).
•Screw the bolt of fig. 25 ref.
to exert tension on the belt or
unscrew it to slacken the belt.
•When you have adjusted tension, tighten the nut (fig. 25 ref.
).
Fig. 24
Fig. 27
Fig. 28
•Loosen the fixing screws (fig. 23 ref.
) of the carriage in
question. Take the carriage toward the limit stop until the two
parts are in contact.
•Tighten the carriage's fixing screws.
Fig. 25
11.
INSTALLATION OF HOUSING FIXING BRACKETS
•Fit a housing fixing bracket at the end of the head profile,
opposite the motor unit, using the supplied screws and plates
(fig.27).
•Fit the second housing fixing bracket slightly off-centre of the
head profile, to enable you to make the door-centre
adjustments.
•Secure the bracket supporting the internal release knob on
the other end of the head profile (on the motor unit side),
considering the dimensions in figure 4,5 and 6 as shown in fig.
28. The support bracket of the internal release knob must
always be installed, even if the motor lock is not used.
Fig. 26
In case of single leaf with left opening adjust the lower belt
tension as follows:
•Loosen the nut (fig. 26 ref.
).
•Screw the nut of fig. 26 ref.
to exert tension on the belt or
unscrew it to slacken the belt.
•When you have adjusted tension, tighten the nut (fig. 26 ref.
).
