1. Check whether the power supply is normally supplied, whether there is any leakage in the power cord, whether the motor fan blades are running normally, and whether the motor is faulty.
2. Check whether the vacuum pipeline is airtight and whether the sealing ring is leaking.
3. Check whether the vacuum valve is open, whether the vacuum pump is filled with oil or whether the vacuum pump water tank is filled with water, and whether the rotation direction of the vacuum pump is correct.
4. Check whether the stirring paddle is eccentric and whether the scraper is seriously worn.
5. Check whether the scraper is stuck by foreign objects, which can not rotate flexibly.
6. Check whether the homogenizing head is normal, whether there is foreign matter stuck in the homogenizing head, whether the relay of the electric control cabinet jumps out, and whether the limit switch is released.