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Boilers
The steam boiler
La Marzocco's manual says not to attempt repairs: any repair must be done by La Marzocco or an authorised centre, using original parts, and the warranty is void for components tampered with or repairs by unauthorised people. Treat this as authorised-centre work.
What sits on the 1.6 litre steam boiler, from La Marzocco's parts catalogue: the element, a temperature probe, a level probe, a 2.5 bar safety valve, a vacuum breaker and a 135 °C safety thermostat. No removal method is published.
The coffee boiler in the group
The coffee boiler is bolted to the group, with its own element (500 W at 230 V, 400 W at 120 V) under a cap sealed by an O-ring, a temperature probe and a 130 °C safety thermostat. Two long socket screws clamp it. No removal method is published.