Regarding The Rice Cooker

URANUS RICE COOKER REPAIRED  PART -2

Authored by Beh.

In part one of this report I changed the thermal fuse and the machine starts to work

And I start to cook rice to test the rice cooker  but  the rice cooker failed  again and fuse blow again !  This  is possible only  due to malfunctioning  of thermostat  and fuse blow because of to  much heat even more than 139 degree  celsius (more than breaking point of thermal fuse )  

Yes the thermostat is another suspect  but what is the thermostat?

A thermostat is the component of a control system which regulates the temperature of heating or cooling  system so that the system's temperature is maintained near a desired setpoint temperature. The name is derived from the Greek words thermos "hot" and statos "a standing". The thermostat does this by switching heating or cooling devices on or off, or regulating

the heat in the rice cooker and any other heating machine

In this rice cooker the thermostat failed to regulate the temperature and thermal fuse acts as safety component and break the circuit to prevent fire from rice cooker.

In this rice cooker a bimetal spring is installed as thermostat

Spring is inside a metal capsule when the heat exceed more than temperature that is required for cooking the rice in proper time.

 spring bimetal thermostat

By changing the length of spring pushes a piston and piston turns off the internal switch of rice cooker  by changing the spring thermostat with a new one  rice cooker start to work again.

Conclusion: the blowing the fuse at first time was because of the malfunctioning of thermostat not life span of fuse itself.