TOPP T120, Instructions For Installation And Use Manual, Page: 25 / 60

VRC
SR
VR
Fig. 30
Fig. 31
MIN 5mm MAX 10mm
Make the electrical connections in accordance with the instructions in this manual, and install all the safety
and control devices. When wiring, take care to have the wires pass tidily into their compartments so that you
will not have any difficulty installing the casing covering them.
INSTRUCTIONS FOR INSTALLATION AND USE
EN
T120-T240
Belt adjustment
With the belt installed, position the belt transmission fastening bracket "SR" with the screws "VRC" at the end of
the adjustment slots (Fig. 30) and fasten the screws "VR".
Using a screwdriver, apply leverage on the slots so as to tighten the belt. On reaching the desired tension, fasten
the screws "VRC" taking care to see that the belt transmission remains parallel to the beam.
For correct tension of the belt check with the door open, halfway between the two pulleys that there is a space of 5-
10 millimeters between the two branches of the belt when you press them between thumb and forefinger, without
excessive force (Fig. 31).
After adjusting the belt tension, check the correct opening and closing of the wings manually. There must not be
any friction or jerking during the movement. If the wings do not open or close properly, adjust the fastening on the
belt by moving the brackets "S3".
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