Hi! I'm opening my very own shop on Monday and finally got all of my equipment, coffee, etc. But for some reason I couldn't pull a shot today. I checked my grind, checked all sorts of things. It almost seems like I don't have enough water pressure. But I'm such a newb that I was panicking! I am hoping to find a local barista who could maybe donate an hour of their time (preferably tomorrow or Friday). This way if I need to call a tech I can get them out before I open. I have a semi-auto Cimbali. The shop is in San Bruno, CA but I live in Sunnyvale (takes about 45 mins to get there). I'd be happy to pick you up and drop you off...whatever you need!
**Dr. John came and rescued me! He also showed me some cool stuff...nicest guy ever!**
When you adjusted the pump, how did that affect the pressure readout?
Also, your grind isn't way too fine is it? Seems like you would have picked up on this (and I see that you mentioned you adjusted the grind), but just figured I would throw it out there. Water comes out of the PF if there is no coffee in it, yes?
Either you aren't getting enough pressure or you have too fine a grind/too much coffee in the basket.
I have seen new shops just built out get rocks and dirt in the water lines. That impede the water flow. Disconnect your water line and make sure you have good pressure going to the machine. Also check the machine for clogged lines. Make sure you can hear the water pump turn on the espresso machine when pulling a shot. Also make sure your espresso grind is not to fine. good luck.
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