The eighth article in the series "Increasing Productivity and Quality Management" shows how Unitechnik’s control system supports maintenance and thus reduces the downtime of a circulation system. In addition to increased productivity, the precast facility benefits from improved planning reliability. Delivery dates can be observed without the need for special shift working when the plant is running smoothly. This report describes the diagnostics offered by the control system, how regular maintenance is supported and how maintenance staff can become even more flexible by using mobile devices.