To assemble the winder roller, insert it into the appropriate holders and in the correct position as indicated on its label.
The black band highlighted on the card (right side head of the winder roller) indicates the position of the security PIN.
Position the roller with the security PIN (covered by the protective paper) so that it is under the roller; releasing the roller from the paper causes the PIN to come out of the roller.
Rotate it manually in the direction of loading and release it immediately. The loaded roller will wind the belts by calling back the shutter.
DO NOT REMOVE THE SAFETY PIN UNTIL THE ENTIRE SHUTTER IS FULLY ASSEMBLED.
In case you unload the winding roller before you have completed assembly, reload it following the direction of winding rotation and the number of turns always indicated on the roller; lock it by reinserting the safety PIN.
Repeat the previous steps again.
Do not charge the roller in the opposite direction to that indicated, you will irreparably damage the reel itself (which should be replaced).