AND at 15 years it is END OF LIFE!! On Sat, Jul 13, 2019 at 5:57 PM Rob K <[email protected]> wrote:
> After a year of laziness, I finally have my B II working again. After 15 > years and only having to replace the pump and OPV, I was limping along with > a few issues for a while. The main issue I had was that the steam boiler > refill would stop working once the machine came up to temperature. Worked > fine at startup and I would do some testing while the brew boiler was > coming up to temperature and it would continue to work and even sometimes > for a while after it reached temperature. I opened up the machine to start > doing some testing and noticed a small leak from the pressurestat so that > was the first thing I took care of. After testing everything, I took the > control board out of the housing and noticed some blackening around the > relay. Replaced it and everything back to normal on that side. > > Next issue was a familiar one, pressure fluctuation during extraction > after the machine had been on for a while. First couple of shots would > usually be OK though. Lived with it like this for another year and it > continued to get worse to the point where I couldn't pull a shot without > pressure loss. Replaced the pump and dialed in the OPV and seems to be > back to normal. > > Last issue and the one I am looking for a little guidance on was the AKO > controller showing impossible temperature fluctuation after the machine had > been on for a while. The read out would go from 95 to 70, fluctuate widely > and then back to 95. Temperature seemed to actually be OK and shots were > fine. It had been recommended by WLL that I pull the temperature probe and > see if it was covered in scale. When I finally got it out there were two > tiny spots (about 2mm diameter). I cleaned them off and reinstalled the > probe with Teflon valve packing and then got an E1 error immediately. I > pulled the probe back out and couldn't see a problem but figured I broke it > so I started pulling on the wire and it came out of the probe with bare > twisted wires. The original wire must have been pushed down in there > because at least an inch came out when I pulled it. I wrapped some tape > around it temporarily and put it back in and everything started working > again, I had it on for 6 hours with no more fluctuation than a drop to 94 > degrees. For now I have applied some RTV 6500 high temperature silicone to > keep the wire in place and prevent another short. I am going to put it > back in tomorrow once the silicone has fully cured. > > WLL does not have a replacement, the one they directed me to was for the > PID. Not sure I want to do that project to upgrade to PID though, I'd > rather buy a new machine honestly. From what I can tell the part I need is > the AKO 14901 thermocouple. Seems to be very difficult to find because of > the age but I have found a couple of places. Would I just need to remove > the previous sensor and then get the new one down in the hole and secured > somehow? I saw a thread on home-barista.com but it's not exactly clear > as to how to secure the new thermocouple in the probe. > > Thanks in advance for any help or advice you can give. > > Rob > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/brewtus/579560d2-183e-42a1-870a-530c40f6f3d6%40googlegroups.com > <https://groups.google.com/d/msgid/brewtus/579560d2-183e-42a1-870a-530c40f6f3d6%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/brewtus/CAO0oNMJNfT3W3N-9ikz0_8TypVoa5Yf9dVLwXYsEoPgx%2BNGJVg%40mail.gmail.com.
