The BZ99S is not a smart appliance. It is a simple, professional tool. And because it is simple, it is brilliant. If you find one on the used market, buy it. Then spend a weekend learning to love its quirks. You will never need another espresso machine again.
Detailed technical documentation for the BZ99 series can be found through specialized community forums and parts suppliers: Espresso Resto Demo - Pasquini Livia 90s / Bezzera BZ99 bezzera bz99s manual
Because the BZ99S has a large thermosyphon loop, the grouphead overheats if idle. Always flush 4–6 oz of water through the group (without the portafilter) immediately before locking in your portafilter. The BZ99S is not a smart appliance
The BZ99S is renowned for its steaming power. The manual highlights the rotary knob operation, but technique requires practice. If you find one on the used market, buy it