When ink buildup on rubber rollers threatens print quality, manufacturers need a reliable way to clean them before installation. The control unit for a rubber‑washing plant sits at the heart of that cleaning line, directing water jets, temperature ramps and drying cycles to strip ink, solvents and debris from each roller. In a printing‑machinery factory the unit receives a batch of used blankets, synchronises the sequence of wash, rinse and air‑dry steps, and provides operators with real‑time status on a touch screen. Because the cleaning process is fully programmable, engineers can tailor cycles for different rubber formulations, ensuring uniform removal without damaging the surface. Integration with the plant’s PLC network lets the CPU log each cleaning event, supporting traceability required by quality‑control departments. The result is faster turnaround between press rebuilds, lower scrap rates and consistent print performance when the freshly cleaned rollers are mounted on new presses. A typical scenario sees the plant cleaning a dozen rollers overnight, the CPU confirming completion and signalling that the rollers are ready for assembly.