Thanks for the interest in my question. Here's a bit more detail to clarify what's going on.
The brew boiler is of course filled up with the steam boiler. The steam boiler should be very hot so if all you are doing is pulling shots, the brew boiler gets filled with the very hot water from the steam boiler. One would think that you could pull several shots then without the brew boiler temperature dropping. In fact, this is how my Brewtus did once operate. Now, if you make an Americano or two in between, you would be pulling cold water into the steam boiler. Not only does that cold water need to be heated up, but the brew boiler will not be on when the steam boiler is heating. So, if you pull another shot in that sequence, it would make sense that the brew temperature could fall quicker than expected. That isn't the case with me. Even if I do *not* draw any water from the hot water wand (steam boiler), my brew boiler temperature can easily drop a degree celsius after only one 25-30 second shot. At first I thought this was due to the faulty vacuum relief valve. This would result in the steam boiler not being as hot as it is supposed to so the water filling the brew boiler (from the steam boiler) would also not be as hot. Well, I did successfully replace the vacuum relief valve. It no longer leaks or hisses. So, I would think the steam boiler is full of very hot water. I would also think that if I pull a shot from the brew head, the brew boiler would be filled with that very hot water from the steam boiler. If this makes sense so far....then why does my brew temperature drop so quickly after only one shot? If I try to pull two shots back to back, the brew temperature can easily drop from 96C to 94C. > > > > -- 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 http://groups.google.com/group/brewtus. For more options, visit https://groups.google.com/groups/opt_out.
