Highly effective system cleaner for the supply systems of water mixed working fluids and coolants in central systems or individually filled machines. The cleaning process occurs before the operating fluid is changed, during ongoing operation. The cleaning process has no negative effect on the operating performance of the machines. RENOCLEAN SMC is compatible with large number of operating fluids and is specially adjusted to all ECOCOOL and RENOFORM products. It is free of secondary alkanolamines, heavy metal compounds, phenols, hexahydrotriazine, and nitrite. SMC + is free from formaldehyde releasers.