The electromagnetic furnace is popular with the advantages of heating speed, energy conservation, cleanliness, many functions, precise temperature control, etc., and is an alternative to gas stoves. With an electromagnetic furnace, even without gas stoves, the home can cook. There may be malfunctions in electromagnetic furnaces after long periods of time, at which point maintenance is required to restore normality in order not to affect normal use. It is important to have the relevant skills to maintain the electromagnetic furnace. So what's the electromagnetic furnace maintenance technique?
Emp maintenance techniques
Event 1, open fire insurance。
The first is to replace the wired foot of the electromagnetic disk with the safety tube, and to measure both ends of the capacitor c102 with a direct current output voltage of 220v-300v of the general bridge current, which is judged to be the fault of the whole stream if there is no voltage or continued fire insurance。
Reason for analysis: 220v direct short circuits are exchanged if the whole stream bridge passes。
At the 2c102 end, there was voltage, judged to be igbt bad, replaced by a fail-out。
Reason for analysis: c102 ends have a voltage which indicates that the straight-flow output of the whole stream of the bridge is normal and, if the two output feet of the igbt are punctured, is equivalent to a straight-flow short circuit。
The bridge and the igbt were not broken, but the insurance was still burned, and the ia8316s integrated blocks were broken, replaced and the failure was eliminated。
Reason for analysis: due to excessive pulse angles from ta8316s output, igbt was overloaded。
It's not working
One dials out the fan fan fan slot to detect the presence of 12v power supply, and if so, the fan power is broken。
Reason for analysis: power supply is normal, usually fan power is short or broken。
The 2fan interpolation line is free of 12v voltage and drives the tripolar tube q703 into the upper q703, replaced by the q703, and the failure is resolved。
Reason for analysis: when q703 is not broken, integrated ic4 is bad, replaced by ic4 is broken。
The three fan engines and q703 were not broken, the integrated circuit block ic4 was broken, replaced by the ic4 block, and the failure was neutralized。
Reason for analysis: if the 7th foot of the integrated circuit block ic 4 has no high-level output, then the q703 launch is extremely unprejudiced, the q703 integrated pole remains unconducted and the power supply is in a state of break-off。
Event 3 and electromagnetic furnaces are operating normally, but without heat。
1 the foot 3 of ta8316s has 18v voltage and, if not, the q201 can be checked for piercing, zd201 for penetration, and failure is eliminated if puncture is replaced。
Reason for the analysis: if the 3rd foot of ta8316s is free of 18v voltage, the failure point is to be connected to the voltage circuit of the power supply, so the basic components that constitute the chain of voltage circuits must first be examined。
The third foot of 2ta8316s has 18v voltage, and the failure should be removed after it has been replaced by cascading ta8316s。
Reason for the analysis: the led plate displays and is operating normally, indicating that the computer controls the circuits in a largely normal manner, does not burn insurance, indicates that the pressure plate is generally normal, except that the igbt is not able to conduct it because the ta8316s have no pulse output to the igbt control level。
Event 4, when the electromagnetic furnace is on, the panel lights are always blinking。
1 crystal irritation, swapped, problem solved。
Reason for analysis: the crystal incisors caused the cpu central processor to enter no clock frequency, thus causing the entire central processing unit of ic1 to lose control。
Electromagnetic furnace heating principle
The electromagnetic furnaces heat foods using electromagnetic induction principles. The surface of the electromagnetic furnace is the heat-resistant ceramic plate, which produces a magnetic field through the wire below the ceramic plate, and when the magnetic line in the magnetic field runs through the bottom of the iron pot, the stainless steel pan, etc., it creates a vortex that heats the bottom of the pan very quickly for the purpose of heating the food。
The process is as follows: the exchange voltage is converted into a direct current, which is converted into a high-frequency (hf) communication power through a high-frequency (hf) power conversion device, adding high-frequency (hf) communication power to the flat-heart spiral sensory loop, which creates a high-frequency (hf) intersection magnetic field. Its magnetic line penetrates the ceramic plate of the stove and acts as a metal pot. In cooking pots, powerful vortex is generated by electromagnetic sensors. When the vortex overcomes internal resistance to the flow of the pot, the conversion of the electric energy to the thermal energy is achieved, and the resulting jj heat is the source of cooking heat。
These electromagnetic furnace maintenance techniques are available only to those who know how to maintain them, and they are useless if they are not. When the electromagnetic furnaces fail and need to be repaired, it is desirable that they be brought to a professional after-sales service for repair or to someone who knows how to maintain them. Those who do not repair the electromagnetic furnaces do not take it apart at will, which is a very difficult thing to do and will only lead to further failure of the electromagnetic furnaces。
