Pre-cooling: Materials must be pre-cooled to near 0°C before entering the machine to avoid excessive temperature differences that could cause a surge in equipment load.
Liquid nitrogen replenishment: The liquid nitrogen tank pressure must be maintained at 0.2-0.5 MPa, and the level gauge should be checked regularly.
Cleaning and maintenance: Wipe the conveyor belt with 75% alcohol after each day's production, and clean the condenser surface of frost monthly.
Safety precautions: Operators must wear anti-freeze gloves and goggles, and replenishing liquid nitrogen in confined spaces is prohibited.
