Sorvall/RC-5B - Rotor overheating
Recently, one of our Sorvall RC-5B users did a 2-hour run at 15k RPMs that resulted in the GSA rotor getting so hot the plastic sample bottles melted. (The load was balanced, refrigeration was not used.) The next day I did a 1-hour run at 5,000 RPMs with an empty SS-34 rotor. It was slightly warm. The motor and spindle assembly wasn't hot, so I'm ruling out bad bearings. I've never seen this before. Did they simply run it too fast for too long? Any insights would be appreciated, Advise this member.
Milton Roy/Spectronic 20D+ - QA Coordinator
I have a Milton Roy Spectronic 20D and I was wondering how often do I need to replace the lamp? Is it after a certain amount of hours of use? Advise this member.
Sorvall/RC-5B - Rotor detachment
We have twice now had an aluminium SS34 rotor come detached from the spindle during the increase to speed and it writes off the rotor. Both times the user was certain they put it on correctly and they have all been trained. I wondered if anyone else has experienced this? Advise this member.