thermomix

[BenWiFFen]

A freiend gave me this green box with two knobs and a switch with a amber light. It's made by B.Brain # 1460 front left corner it says max 200pc. A 120 volt cord with S/S tubing in a coil under the green box. It's something used for refrigerant I think. Can anyone shead any info on this device? And what or how to use it. Thank's  EDIT: After closer inspection it's made in west Germany a tag saying "Schutzart IP 21" in the tubing is a S/S pump. I couldn't resest it and had to plug it in and hit the switch. What appears to bee a discharge line gets hot quick.