
S4
S5
Keeping the trolley against the rubber block, push the lock device against
the housing and – while keeping it still – pull the pulley, thus giving
a medium tension to the belt. You can now tighten the nut to torque
(Figure 7).
Check the manual operation of the lock, lever in the direction of the arrows to make sure that the lock lever has some
clearance within the slot of the hooking lever mounted on the trolley (Figure 8).
If - when the manual operation is being checked- the lock lever collides
with the hooking one instead of within the slot, loosen again the nut
which was previously tightened, move the lock further away in order to
enable the correct hooking to the trolley, and repeat the adjustment of
the belt take-up as mentioned above (figure 9).
Carry out some manual openings and closings of the wing for safety,
in order to ascertain the mating between the block lever and the one
which hooks on the trolley. Furthermore, check – with the hooking lever
closed – if the wing can lock even in case of collision to the trolley.