[DIYbio] Re: Eppendorf 5415 centrifuge: How to remove the rotor?

What you have described is the correct way to remove the rotor. You put the wrench around the hexagonal part and turn it opposite the rotor. It could be difficult from being over tightened in the past or perhaps you have been turning it the wrong way. It's been a while, but I think the rotor itself should turn turn counter clockwise to unscrew it while the wrench goes clockwise.

On Friday, August 19, 2016 at 11:18:51 AM UTC-7, jarlemag wrote:
I recently bought an Eppendorf 5415D centrifuge, and have tried to remove the rotor for cleaning and inspection. I don't have a rotor key of the kind that is sold by Eppendorf, but the item description at http://www.capitolscientific.com/Eppendorf-022667181-Rotor-Key-for-Microcentrifuge-Models-5415-D-5415-R-10mm-Socket-Wrench seems to indicate it's just a standard 10 mm socket wrench, so I bough one of those. (https://www.amazon.com/gp/product/B0028N57SW). I attempted to use the socket wrench on the hexagonal part in the centre (see the picture), but that just makes the whole rotor turn. I tried to keep the rotor in place while turning the wrench, but that didn't work either (I couldn't keep the rotor still).
If I try to lift the rotor upwards, the centrifuge hangs from it and I'm worried about damagaging it so I didn't try that very hard.

The centrifuge manual (http://www.nist.gov/ncnr/upload/Eppendorf_5415R_Centrifuge_Manual.pdf) doesn't go into detail about how to remove the motor. It mentions bending the rotor to one side if it's stuck, but how do I know if it's stuck in the way which is solved by doing that? 

What do I need to do?

Best regards,

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