Electric kettle repair with own hands
Check for a break.To do this, connect the dial to the terminals of the heater. For more accurate measurements, it is recommended to temporarily remove the connector with the wire from one end of the heater.
Resistance to the body.This indicator is necessary in order to know whether there is an electrical connection between the Nichrome TENG and its body. If it is, then use such a kettle, although it is possible, but extremely dangerous. This is especially true of its use in private homes and in the country, where it is very close to the ground. The teapot body is under the “phase” and with poor insulation from the ground, you can get a strong, even fatal electric shock. Of course, this does not stop some; the kettle warms well, but the consequences can be dire. In such cases, or change the heater, or throw the kettle in the trash.At least those who take care of their family and neighbors do this. So, we are measuring resistance. To do this, we connect one end of the dial tone to any output of the heating element, and the second with a metal "sole" or the body of the kettle. If there is no circuit, then everything is in order. This device will show more accurate readings, so to speak - under operating voltage, but if it is not available, it will be enough to make continuations. As can be seen in the photo, in the case of this kettle the heating element is not damaged. overheating protection This protection should turn off the kettle when there is no water in it, or it has boiled away. The principle of this device is quite simple. When overheating, bimetallic plates on the "bottom" of the kettle bend and press down on the ceramic rods. They, in turn, put pressure on the electric moving contacts, which, when pressed, open. After the bimetal cools and returns to its original state, it also occurs with electrical contacts. They close again and pass current to the heater. And this can continue until someone disconnects the device from the network. Of course, this protection is not designed for multiple disconnections.Most likely, after a couple of dozens of such overheating cycles, the heating element itself will burn, but thanks to it, it may not get to the fire.
We proceed to disassemble this module.
Unscrewing them, you can see two round bimetallic elements that, for better heat transfer, are connected to the body through thermal paste.
It is better to remove them immediately, and put them in a box, while this unit is being repaired. Now, we check whether there is a circuit through the contacts. In this particular case, there was no chain. It appeared only when you pressed the plate with the contact. Also in appearance it is clear that the contact and the plate overheated and lost their properties.
Date: 09.10.2018, 12:36 / Views: 94152
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