They were in the "scrap" bin but they are perfectly clean (class 2 ISO clean room IIRC) with freely spinning rotors. ONE has the controller. I don't have any way to test them, really, since spinning them up (if the controller even works) in atmosphere would end badly I have no use for them and grabbed them because A) cool as hell and B) I have a "problem" lol. I have a lot of industrial parts in boxes and getting rid of stuff will make the wife happy I will have to post what I have in the classifieds. Intrinsically safe barrier modules (ATEX),ATEX 3-phase stainless food grade pumps (used for PURE IPA pumping), Turck parts, WAGO parts, Omron PLCs, VFDs, Galil motion controllers, sensors, etc. When the company moved they scrapped all kinds of equipment. I missed my chance to grab some pure copper "targets" from our PVD tools, unfortunately...they were 80lbs each. But I do have some Gold test wafers which are cool:) Every now and again I see a 2 or 10KV power supply in there so if anyone wanted one I would gladly grab it and ask postage. I never grabbed one since I have to draw the line somewhere before I end up on Hoarders...
Hmm... should I take that as saying you're prepared to sell them to me cheaply? I have a US re-shipper account, so you'd only have to post them to CA USA. But pack for international shipping. I can advise if needed.
Are the three pumps all the same? And the controller has the cable to the pump, and the plug fits?
What are the model numbers? If you're interested in selling, can you show pictures?
If they are all the same, or different but the controller is compatible with more than one, I'd like to get them all. Better chance of getting one working, and also having spares is good.
I have a project I've been working towards for years, part of which is a large vacuum chamber. I'm at the stage where I have to decide whether I'm going to give up on ever finding an affordable turbo pump, and just go with the big oil diffusion pump I have. I'd rather not, since oil diffusion pumps seem like they are a major pain in the butt. Backstreaming, oil everywhere, potential for oil mist explosion, cleaning, nasty oils, power hungry, lots of heat in the room, water cooling needs, slow cycle time, etc.
There are some peripheral bits of the project online:
http://everist.org/NobLog/20121017_the_last_rack_bender.htm http://everist.org/NobLog/20141212_racked_serendipity.htmBut overall I don't talk about the intended purpose, so sorry, no point asking. It's a very worthy cause though.
The chief problem is, I'm very poor. Retired, extremely tiny income. So if you want market rates for them, I probably can't afford.
You don't happen to also have any vacuum sensors and their controllers? Especially of the cold cathode type (not so easily destroyed by vacuum mishaps.)