Caffeine extraction centrifuge

[cyclopath]

Dragged home another one…

Beckman J-6B

Soooo…I dragged home a Beckman J-6B centrifuge from the junkyard, and to my surprise it powered up and got cold. However, it has no rotor in it, and when I ask it to spin up it does so only for a few seconds. I think this is the correct response to being asked to spin empty… Certainly the newer fuges will perform this way if you ask them to start without a rotor. Fine manual mentions no such magic. Just wondering if anyone out there has a J-6B and could pull the rotor and confirm for me? O…