I thought I had this problem solved after I took apart and cleaned the vacuum relief valve. It worked fine for the past two week but now the issue has recurred. When I turned the machine on yesterday morning the pump began to run and the pressure went up to 10 bar. The pump would not stop running and the pressure remained at 10 bar. I turned it off and tried starting it again several times thoughout the day but the behavior was always the same: constantly buzzing pump and pressure at 10 bar. Eventually a high pitched squeal developed along with the pump noise and I haven't turned it on again for fear of burning out the pump or causing other damage.
Any ideas? I have a brand new vacuum relief valve that I will install tonight. If that doesn't help I'm stuck. Thanks, Howard Sent from my iPad > On Apr 26, 2017, at 14:59, Howard Griffin <[email protected]> wrote: > > I have had my Brewtus III-V (vibration pump) for almost seven years. Its > usual behavior upon startup has been to buzz for a few seconds (5-10 seconds) > and then start to heat up. The buzzing usually terminates with a very brief > uptick in volume before stopping. A typographical representation might look > like this: [click on] rrrrrrrrrrrrrrrrRRR [noise stops machine begins to heat > up]. Sometimes there would be no buzzing at all upon turning it on and it > would begin to heat up right away. This was its normal behavior until > recently. > > Now, when I turn it on the buzzing frequently goes on for a very long time—up > to three or four minutes before resolving in an uptick in volume, like this: > > [click on] > rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrRRR > [noise stops machine begins to heat up]. Sometimes it still starts up with > no noise and begins to heat up right away. > > Is something about to fail on the machine? What should I check? Any advice > would be appreciated. > > Howard > > -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/d/optout.
