[Opera-CONNIE] vacuum pump status
Guillermo Fernandez
fmoroni.guillermo at gmail.com
Thu Jan 15 20:12:59 BRST 2015
In fact the capacitors look they come with the case and cables from factory:
http://www.electronicon.com/index.php?partno=E33.C78-500805%2F27E151&partnosubmit=Search+%C2%BB&id=423&L=1&search=partno
I found I have a similar capacitor in a water pump I bought two weeks ago (attached). I think it would be a good idea to try to remove the capacitors and take them to Rio to test them. let's take several pictures of the place they are connected and the way the fuse box is organized. I assume none of the cables from the capacitors go directly to the motor. There should be a terminal block inside the box.
Also, Andrew from Fermilab, suggests to try to move the shaft. You can do it from the back of the backing pump. It has a fan, after removing its red cover. The cover is removed unscrewing a few screws. He tried first this at Fermi, these were his words:
"you should feel the vacuum stroke. Easy movement then resistance on the valve closing"
Pamela, Alejandro and Stephan: again, thanks a lot for all the work. In all this craziness of trying to do as many things as possible we may forget to say thanks.
Guillermo
On Jan 15, 2015, at 4:35 PM, Guillermo Fernandez wrote:
> Hello,
>
> unfortunately, the fuses in the backing pump were not the problem. Alejandro, Pamela and Stephan, after checking that the fuses were ok, tried to start the pump again in 115 and 230V, but the motor didn't start. In both cases the green light of the switch was on. They also measured the current for 115V, it was 2A.
> They tried to take apart the capacitors, but it was not possible from outside. If we decide to remove them, we need to disconnect the cables from inside the fuse box. They took a couple of pictures of the capacitor model.
> I told them to assemble the pump again, and leave it on the bench.
> They will stay until tomorrow in Mambucaba. If no other suggestion, they will return to Rio tomorrow.
>
> Guillermo
>
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