Maximum Temperature V4 Extruder 70W

Hello My Name is Alex Luijten and I work as a scientific assistant and process engineer at the federal university of technology ETH Zürich in Switzerland. I'm very interested in buying the V4 Pellet Extruder with 70W. I can see that the thermistor goes up to 400°C. What is the maximum continuous temperature the extruder can work at? Is there a cooling of the upper part of the extruder? Does it get hot during long usage times? Thanks a lot for answering! Best regards, Alex Luijten Alex Luijten, Research Assistant Laboratory of Composite Materials and Adaptive Structures Institute of Design, Materials and Fabrication Department of Mechanical and Process Engineering CLA E 32.2 Tannenstrasse 3 CH-8092 Zurich Tel.: +41 44 633 92 83 luijtena@ethz.ch www.structures.ethz.ch