I would like to know if anyone has put a PID on a single boiler multi group machine? The way I see it, the single boiler will be controlled by the PID no matter what is happening with the groups. The only problem will arise when one person is steaming and another pulling a shot. Surely that is the same problem on a single group machine? Does anyone have any experience with putting PID's on single boiler, semi automatic [volumetric] machines?
Stewart, Brisbane.