Common problems and maintenance of rice cookers

The common malfunction of electric rice cookers is that they automatically switch off the power when they cannot cook cooked rice or boil water. This type of fault mainly occurs in magnetic steel temperature limiters, and this article introduces two practical solutions to this problem.
1. Enhance the elasticity of the control spring
According to the structure of the temperature limiter, the key to control is the gravitational force between the permanent magnetic steel and the temperature sensing magnetic steel, as well as the repulsive force between the control spring. After using the rice cooker for a period of time, due to the control spring and permanent
Long term magnetic steel is often exposed to high temperature environments and collides when rice is cooked and power is cut off, which can cause the control spring to age, harden, increase pressure, and weaken the magnetic properties of permanent magnetic steel. When cooking, warm
When the temperature does not reach 103 ℃, or even far below 100 ℃, the control spring pushes the permanent magnetic steel away from the temperature sensing magnetic steel, cutting off the power supply, and unable to cook the rice.
Clever repair method: Remove and disassemble the magnetic steel temperature limiter, press 2-3 circles (or more) of the lower part of the control spring together and tie it with fine copper wire. Stretch the remaining parts of the spring again, and finally press the original
Just install the sample.
When there are conditions for magnetizing the permanent magnet steel, a horseshoe shaped magnet can be used to magnetize the permanent magnet steel. The method is as follows: first use a small magnetic needle to determine the magnetic polarity of the permanent magnet steel, and then magnetize the permanent magnet steel
The North Pole of the permanent magnet can collide with the South Pole of the horseshoe magnet several times, or the North Pole of the permanent magnet can collide with the North Pole of the horseshoe magnet.
NO1. Repair fault of rice cooker: unable to keep warm after cooking
Fault cause and maintenance: This fault may be due to dirt or erosion on the surface of the normally closed contacts of the insulation switch, causing excessive contact resistance, causing the contacts to close and the circuit to be blocked, and the heating tube not to generate heat,
Electric rice cookers cannot keep warm. In this case, a fine sandpaper can be used to clean the surface of the contacts and then apply a layer of tin. If the insulation is still not maintained, the insulation switch can be replaced.
NO2. Repair fault of electric rice cooker: rice often boils over
Fault cause and maintenance: This situation may be due to the sintering and sticking of the normally closed contacts of the insulation switch. Although the rice has been cooked and the temperature limiter has also tripped, the insulation switch still continues to power the heating tube,
The meal burned. Now you can use a small knife to separate the contacts and clean the surface of the contacts with fine sandpaper.
NO3. Repair fault of rice cooker: plug in the power plug and the power fuse will immediately blow
Fault cause and maintenance: Generally speaking, water or rice soup enters the power socket of an electric rice cooker, causing a short circuit. In this case, the socket can be dried and used again. Electric rice cooker power socket or plug
Due to long-term use, its surface is carbonized and short circuited. In this case, the surface carbonization layer can also be ground off with fine sandpaper and wiped clean with alcohol.
NO4. Repair fault of electric rice cooker: The cooked rice is sandwiched
Fault cause and maintenance: This type of fault is generally caused by the weakening of the permanent magnetic ring in the temperature limiter. Now it is completely possible to open the temperature limiter of the rice cooker and check whether the magnetic ring is broken and how the suction is.
If the permanent magnetic ring is broken, a temperature limiter of the same model must be replaced; If the suction decreases, the temperature regulating screw on the temperature limiter can be adjusted by 1/4 turn at a time, adjusting once to try cooking.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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