Is it absolutely mandatory to have a 3-pin tool to set up an ABES bollard?

The 3-pin system provides a locking mechanism to open the clamping cone set. Locking is only required if, for some reason, the screw does not loosen. In this case, the screw is grasped in the usual way, and the opposing N2 clamping cone is tightened using the special 3-pin tool, thereby preventing the screw from slipping or spinning when loosened.
Please note: The 3-pin tool is only designed to lock, not to tighten the system.