The safety protection system of desktop refrigerated centrifuge consists of main current protection, overtemperature protection, overspeed protection, unbalanced protection and door cover protection.

1. Main current protection: when the power current exceeds the rated value, the host power is off.

2 and overtemperature protection: when the temperature exceeds the preset temperature + 6 ℃, the machine stop running.

3. Overspeed protection: when the speed is out of control or exceeds the preset speed, the motor will stop running.

4. Unbalanced protection: when the centrifuge vibrates due to unbalanced operation and its amplitude exceeds a certain amount, the motor stops operation.

5. Door cover safety protection: when the door cover is not covered to start the centrifuge, the motor cannot be started. In the centrifuge operation, the door cover was forced open and the motor stopped running.