Wait right up until the machine has accomplished the heating cycle. The machine is ready once the on/brew change lights up with a steady light. As with the OVP (around strain valve) and pre-infusion, a solenoid valve is one area you'd typically count on in commercial machines or household barista https://juliusnwzcf.slypage.com/28578593/the-ultimate-guide-to-voicy-coffee-machine