Hi,
Thanks a lot for all the tips! I experimented a little bit and finally managed to make it work with 277 V at 60 Hz. I used the neutral to phase of a 480 V line. The pump is running very smoothly and reaches an ultimate vacuum of about 15 mtorr with the motor pulling 2.4 A. The temperature...
Thanks a lot for so many useful answers! Yes the transformers are three-phase "600V to 208V" but the voltages are only 200V/115V (measured with a multimeter). Maybe the 600 V that's coming in is not really 600 V, that I couldn't measure. I moved a rather large setup from Switzerland to Canada, I...
Hi,
I'm really curious to understand the following problem. I brought a vacuum pump from Switzerland to Canada. Originally the pump was obviously not designed to run in Canada. Also, the pump is pretty old but used to work flawlessly in Switzerland. I attached a picture with the few labels...