<p>The equipment has a drive section (1) for transmitting the drive movement of a motor to an operating mechanism. A stop mechanism (3) is assigned to the drive section. The stop mechanism has a surface connected with the chain and a blocking unit (5) for transferring the blocking force to a stop surface (4). The blocking unit is movable between the rest and functional positions. Guiding units (6) are assigned to the stop surface, where the guiding units are provided for adjusting the blocking unit (5) in the direction of the stop mechanism.</p>
