[Opera-CONNIE] vacuum pump status

[Herman P Lima Jr]

OK, let's forget the pump that uses oil.

On Monday I will check if we have another pump (oil-free) available at CBPF.

Herman

2015-01-16 14:47 GMT-03:00 Juan Estrada <estrada at fnal.gov>:

> Hello
>
> I would say that if we want to replace the full pump station we need
> something like
>
> —> pumping speed (N2) 60 l/sec
> —> ultimate pressure 1E-6 mbar
>
> if we want to replace only the backing pump:
>
> —> pumping speed for backing pump 0.5 m^3/h
> —> backing pump pressure 1E-3 mbar
>
> Very important:
> We need a oil free pump.
>
> If you have any oil free pump station it is likely to meet these
> requirements.
>
>
> Thanks,
> Juan
>
>
>
>
>
> On Jan 16, 2015, at 8:29 AM, Martin Makler <martinmakler at gmail.com> wrote:
>
> > Hi Juan.
> >
> > That's what I was wondering.
> > Can you send me some specifications so that I can look for a pump that
> could do the job?
> >
> > Cheers.
> >
> > Martin.
> >
> > On Jan 16, 2015, at 12:21 PM, Juan Estrada <estrada at fnal.gov> wrote:
> >
> >> Is there a pump at CBPF that we could borrow?
> >>
> >>> On Jan 16, 2015, at 7:40 AM, Guillermo Fernandez <
> fmoroni.guillermo at gmail.com> wrote:
> >>>
> >>> Pamela, Alejandro and Stephan, thanks for all the work. It has been a
> lot.
> >>> Kevin and Andrew, thanks a lot for all the support from Fermilab. It
> was very important for the operation.
> >>> It is the second time we need to face a big problem with the detector,
> and I think in both cases the response was good.
> >>>
> >>> Regards,
> >>> Guillermo
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>> On Jan 16, 2015, at 9:10 AM, swagner at cbpf.br wrote:
> >>>>
> >>>>
> >>>> Dear all,
> >>>>
> >>>> we checked the vacuum pump again today and followed the suggestions.
> We unmounted the protection cover over the fan. When we tried to move it
> manually, there was heavy resistance and it was difficult to turn at some
> points. We left it in a position where it was more easy to move and
> switched the pump back on and it was working. Before reassembling
> everything again we switched the pump on various times for a short amount
> of time and occasionally it stopped working again. Moving the fan against
> the resistance again solved the problem temporarily.
> >>>> At the times when the pump was running there was a strange sound
> hinting to some internal friction. Probably there is either a problem in
> the motor or there's something wrong with the diaphragms.
> >>>>
> >>>> For the time being we decided with Guillermo to reassemble the pump
> again and wait for further suggestions from Fermilab. We will leave Angra
> today. Alejandro and Pamela will come to Angra again next week and try to
> fix the pump then when new information is available.
> >>>>
> >>>> Cheers,
> >>>>
> >>>> Stefan, Alejandro and Pamela
> >>>>
> >>>>
> >>>>
> >>>> Quoting Guillermo Fernandez <fmoroni.guillermo at gmail.com>:
> >>>>
> >>>>> 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
> >>>>>
> >>>>>
> >>>>> --
> >>>>> Mensagem Verificada pelo AntiSpam CanIt CBPF
> >>>>> --
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> Opera-CONNIE mailing list
> >>>> Opera-CONNIE at listas.if.ufrj.br
> >>>> http://listas.if.ufrj.br/listinfo/opera-connie
> >>>
> >>> _______________________________________________
> >>> Opera-CONNIE mailing list
> >>> Opera-CONNIE at listas.if.ufrj.br
> >>> http://listas.if.ufrj.br/listinfo/opera-connie
> >> _______________________________________________
> >> Opera-CONNIE mailing list
> >> Opera-CONNIE at listas.if.ufrj.br
> >> http://listas.if.ufrj.br/listinfo/opera-connie
> >
>
> _______________________________________________
> Opera-CONNIE mailing list
> Opera-CONNIE at listas.if.ufrj.br
> http://listas.if.ufrj.br/listinfo/opera-connie
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listas.if.ufrj.br/pipermail/opera-connie/attachments/20150116/cd82223c/attachment.html>