1. A method of operating a baler (20), in particular baler for forming rectangular bales comprising a bale chamber (21) for compacting crop material (23) as a straw, wherein the crop material (23) is compacted by pressing with controlled pressure and tied with a retaining material (29), characterized in that the pressing pressure to limit the maximum value and controlling them using the control circuit, wherein the reference variable is a load characteristic holding material (29). 2. A method according to claim 1, characterized in that the first predetermined compression pressure compression phase is reduced to a value less than the maximum velichiny.3. A method according to claim 1 or 2, characterized in that the maximum value is a characteristic of the press podborschika.4. A method according to claim 1, characterized in that the characteristic of the baler and / or load characteristic holding material (29) stored in the operating unit (32) .5. A method according to claim 1, characterized in that the load characteristic holding material is at a maximum strength of the holding material (29) on razryv.6. A method according to claim 1, characterized in that a plurality of holding materials (29) and the load characteristics preferably their tensile strengths are stored in memory in the operating terminal (32) and retaining material (29) is selected from those stored in the memory retaining materialov.7. The method of claim 1, wherein determining at least one force exerted on the trapping material (29) with at least one sensor (28), and use it as a pack1. Способ эксплуатации пресс-подборщика (20), в частности, пресс-подборщика для формирования прямоугольных тюков, содержащего прессовальную камеру (21) для прессования убранной массы (23) в виде соломы, в котором убранную массу (23) уплотняют посредством прессования с регулируемым давлением и обвязывают удерживающим материалом (29), отличающийся тем, что давление прессования ограничивают максимальной величиной и управляю
