What if the circulation pump does not work and the medium cannot circulate?

Fault phenomenon: After the mold temperature machine is started, there is no sound of rotation from the circulation pump, the medium does not circulate, and the mold temperature does not change.

Core reason: The pump body is stuck by impurities in the medium; Motor burnout (overload or phase loss power supply); Bearing wear; The power supply voltage is too low.

Solution: After power off, open the end cover of the pump body, clean the internal impurities, and manually rotate the pump shaft to confirm smoothness; Use a multimeter to check the resistance of the motor winding. If it is abnormal, replace the motor; Bearing wear requires replacement and addition of lithium based grease; Contact an electrician to investigate power supply voltage and phase loss issues.