The CIP cleaning system is a system designed for automatic cleaning and disinfecting of machines in the food industry without major disassembly and assembly work. The pipelines are cleaned automaticly in several steps with various cleansers like lay, acid rinse water and disinfectant. The CIP cleaning system heats the cleansers after which it is rapidly pumped through the pipelines under high pressure. The machine monitors the concentration level of the cleansers.