This applies to both baby Gaggia and gaggia classic machines baby Gaggia VERSIONS: 1970s or original (with an adjustable thermostat) baby Gaggia was for home espresso market, and was introduced (1977) earlier than gaggia classic (1991) baby gaggia old , millenium or baby 1991 : baby gaggia old restoration ( use internet archive) Cerinicoffee Enco-vending baby gaggia new: 11200 (black) 11202(white) square buttons and light explosion diagram OPV can be adjusted from water outlet, located on the ceiling of the water reservoir, using: 3/16 hex key water boiler water inlets and outlets: karine oliver blog RI8155/12 , with 4 round buttons and lights - water reservoir moved to top of backside R12300 baby class ( stainless steel casing) or RI8157/40 or new baby 06 - disc shaped button panel Tom Brasier's wiring diagram BABY 06 TWIN SIN031MDR-RI8159 How to program the baby twin baby dose and twin is having swivel joint steam wand ...