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> Try manually purging the pump with a syringe. > I have had some success running hot water followed by NOAH and guanadine when the pump was clogged with a buffer that crapped out in the pump. If the pump is really clogged the pressure should spike when you try to run it. If not something else is probably wrong > > If I remember right a pump will cost at least a couple thousand dollars if bought through GE. > > Good luck. > > > > On Jul 12, 2012, at 2:09 PM, Peter Hsu <[log in to unmask]> wrote: > >> Hi all, >> >> We've got an old Akta prime that I think is on the verge of kicking it. Hearing some high pitched sounds coming from the pump when we're running it. Line A seems clogged and makes a thudding noise when we try to do a pump wash through that line. Does anyone have any experience w/fixing one/replacing the pump? Or any idea how much it's going to set us back to get it fixed? >> >> Sorry for the off topic question/thanks in advance for any thoughts and ideas. >> >> Peter >>