In modern manufacturing, the integration of ICT in the maintenance process, led to the development of e-maintenance, that automates management operations. E-maintenance, that initially interested only large plant machinery, is now becoming affordable for mass-produced equipment, thanks to the recent advances in ICT. This paper presents Teorema, an innovative e-maintenance solution for Carpigiani ice cream machines, which provides several services: remote monitoring of machines, automatic notification of malfunctions, diagnostics and prognostics functions, remote assistance interventions, and automated reporting of production data. Teorema is already in production and it is significantly improving the after-sale service to Carpigiani customers.