4．先静后动
4. calm down first.
备未通电时，判断焊接设备按钮、接触器、热断电器元器件以及保险丝的好坏，从而判定故障的所在。通电试验，听其声、测参数、判断故障，后进行维修。如果在该文章讲述了焊接设备故障的检查方法与维修经验. 电焊机输入缺相时，测量三相电压值无法进行判别时，就应该听其声，单独测量每一相对地点的电压，方可判断哪
When the power is not on, judge the welding equipment buttons, contactors, thermal power components and fuses, so as to determine the fault. Electricity test, listen to its voice, test parameters, determine the fault, and finally repair. If the article describes the fault detection methods and maintenance experience of welding equipment, when the input phase of the welding machine is missing, the three-phase voltage measurement can not be distinguished, it should be listened to its sound, the voltage of each relative point should be measured separately, which can be judged.
一相缺损。
One phase defect.
5．先清后修
5. first clear and later repair.
染较重的焊接设备，先对其按钮、接线点、接触点进行清洁，检查外部控制键是否失灵。许多故障都是由脏污及导电尘埃引起的，一经清洁后故障往往会排除。特别是在工程施工现场等环境比较恶劣的场合。
For heavily dyed welding equipment, the buttons, wiring points and contact points should be cleaned to check whether the external control key is out of order. Many faults are caused by dirty and conductive dust. After cleaning, failures often get rid of them. Especially in the construction site and other harsh environment.
6．先主后辅
6..
部分的故障往往在整个焊接设备故障中占有很高比例，所以先检修电源输入部分往往可以事半功倍。然后再按照先外后里、先机后电、先静后动的方法检查焊接设备的其他辅助部分，如行走、送丝等部位。
Partial faults often account for a high proportion of the faults in the whole welding equipment, so the first maintenance of the power input part can often be twice the result with half the effort. Then inspect the other auxiliary parts of the welding equipment, such as walking, wire feeding and so on, according to the method of first outside, then inside, first machine, then electricity, first static and then moving.
7．先普遍后特殊
7. first universal and later special.
部件和电器元器件、装配配件质量或其他设备故障所引起的故障，一般占常见故障的50％左右。焊接设备的特殊故障多为软故障，要靠经验和仪器仪表来测量和维修。现场故障一时无法判断，也可以按照产品说明书的联系方式咨询产品生产单位的技术人员。如点焊、缝焊、凸焊及对焊等设备的一些内部程序，在不清楚、不了解的情况下不要轻易调整或者改变，否则就会引起更大的麻烦。
The faults caused by the quality of components and electrical components, assembly parts or other equipment failures generally account for about 50% of the common faults. The special faults of welding equipment are mostly soft faults, which need to be measured and maintained by experience and instruments. On-site failure can not be judged for a moment, can also be in accordance with the contact mode of product instructions to consult the technical personnel of the production unit. If spot welding, seam welding, projection welding and butt welding and other equipment some of the internal procedures, do not easily adjust or change without knowing, otherwise it will cause greater trouble.
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