Mechanical system: Confirm that there are no foreign objects in the gap between the precision grinding rollers and that the tension of the drive belt is normal.Temperature control system: Check the level of thermal oil (≥ 80%) and ensure that all valves are in the open position.Electrical safety: The emergency stop button is reset, the grounding wire is not loose, and there is no alarm code on the control panel.Material preparation: The raw chocolate slurry has been preheated to 40-45 ℃ (to avoid cold material impact).