As people's standard of living continues to rise, more and more domestic appliances are entering people's lives, and now there are plenty of household appliances in every household, and it's good when it's not bad, but it's bad when it's broken. So how are we going to do this with so many appliances? By asking questions, the journalists found the engineers who were fixing the sorority house。
Engineers at the soyuz house are of the view that before repairing household electricity, they first ask questions about the pre- and post-facility and the phenomenon of failure, and, on the basis of the information and clues provided by the users, carefully examine the circuits and understand their electrical principles and the role of their metaware, so that they can be measured and targeted。
In the case of malfunctions, the external parts of the aircraft should be checked, in particular some switches outside the aircraft, the proper position of the knobs, external lead lines, any break-up of the plugs, short-circuit phenomena, etc. When it is confirmed that the external parts of the machine are normal, the machine is opened for inspection. In the case of electrical appliances such as air conditioners and washing machines, some malfunctions are likely to occur in mechanical areas. So let's check whether it's mechanical or electrical. Electrical inspections are carried out only when it has been determined that the departmental transformer is functional。
When the equipment is not powered, the quality of electrical equipment buttons, contactors, heat relays and fuses are determined and the fault is determined. Electro-test, listen to its sound, measure its parameters, determine its failure and then perform maintenance. If the three-phase voltage value cannot be measured separately in the event of a lack of electrical motivation, it should be heard separately for each relative ground voltage to determine which loss. For lost equipment, the principle and structural characteristics of the circuit should also be first understood and the corresponding rules followed. Before dismantling, each electrical component shall be fully familiar with its function, location, mode of connection and relationship to other devices around it, and, in the absence of a layout, shall be dismantled while drawing a sketch and marking。
The power is the heart of the machine, and if the power is abnormal, it is impossible to guarantee normal work in the other parts or to check other failures. Experience has shown that the power component has a high rate of failure in the overall machine, and that many of the failures are often caused by the power source, so that a first overhaul of the power source often yields a multiplier effect. For more polluting electrical equipment, the buttons, the interface points, the contact points are first cleaned and external control keys are checked for failure. Many of the malfunctions are caused by dirty and conductive dust, which is often removed after cleaning。
In fact, all kinds of things seen in everyday life have a life span, but the use of electricity is easily ignored, and many people are given it in exchange for failure. Therefore, only rational use and maintenance can make household electricity more permanent
