CIP cleaning cycle SFC

A clean-in-place sequence is naturally expressed as an SFC because only one phase is active at a time. This example moves from idle through pre-rinse, timed caustic wash, and final rinse before issuing a completion pulse. Each transition names the signal that confirms the prior phase. It provides a compact design-review view of a cleaning cycle, while the actual recipe must still define temperatures, concentrations, flow, and validation requirements. Before using the layout in a build or document, compare every label with the source requirements and update the drawing when parts, conditions, or materials change. The example is deliberately small so the essential relationships remain readable, easy to review with collaborators, and ready to extend with the details required for the actual project.