搅拌车的故障有很多种，比如发动机故障、液压系统故障、电路故障、操作阀故障等等，今天小编就给大家介绍一下混凝土搅拌车的电路故障，当你的搅拌车电路出现故障需要维修的时候，需要注意哪些问题呢？
There are many kinds of failures of the mixer truck, such as engine failure, hydraulic system failure, circuit failure, operating valve failure, etc. today, I will introduce the circuit failure of the concrete mixer truck to you. When your mixer truck circuit fails and needs maintenance, what problems should be paid attention to?
先要做的就是断电，在断电之前要将点火开关关闭，同时还要关闭用电设备，比如音响等设备，禁止电器设备运行时突然断电。
The first thing to do is to cut off the power. Before cutting off the power, turn off the ignition switch and turn off the electrical equipment, such as audio equipment. It is forbidden to cut off the power suddenly when the electrical equipment is running.
具体断电顺序如下：，所以在维修的时候要拔掉负极，再拔正极，安装的时候顺序是相反的，先装正极，后装负极。
The specific power-off sequence is as follows: safety is the first, so the negative electrode shall be pulled out first and then the positive electrode shall be pulled out during maintenance. The installation sequence is the reverse, and the positive electrode shall be installed first and then the negative electrode.
有些朋友会问：为什么先断负极呢？
Some friends will ask: why break the negative electrode first?
1. 先拆正极存在烧坏电器元件的风险，容易引起电脑板烧毁的损失。在电路的实际维修过程中因违反操作规程，损坏电路和把手烧伤的人很多，因为蓄电池正负极短路电流非常大，能瞬间产生高温。
1. There is a risk of burning the electrical components when removing the positive electrode first, which may easily cause the loss of burning the computer board. During the actual maintenance of the circuit, many people damaged the circuit and burned the handle due to violation of the operating procedures, because the short-circuit current of the positive and negative electrodes of the battery is very large, and high temperature can be generated instantaneously.
2. 如果先拔掉正极，因负极是搭铁的，也就是正极周围的金属车体都是负极，如果用工具拆卸正极接线时，工具碰到旁边的金属车体，就会造成蓄电池正负极短路。
2. If the positive electrode is unplugged first, because the negative electrode is grounded, that is, the metal car body around the positive electrode is negative. If the tool touches the metal car body next to the positive electrode wiring when the tool is used to remove the positive electrode wiring, the positive and negative electrodes of the battery will be short circuited.
3. 如果先拔掉负极，因负极周围的金属车体与负极是连通的，即使工具碰到也不会产生什么坏的结果，当负极拔掉后已经断电，再去拔正极就不会有什么危险了。
3. If you unplug the negative electrode first, because the metal body around the negative electrode is connected with the negative electrode, even if the tool touches it, it will not produce any bad results. When the negative electrode is unplugged and the power has been cut off, there will be no danger to unplug the positive electrode.
在这里要注意一点：现行的搅拌车的蓄电池都是有总开关的，但是原来的都没有，就不好操作；而且如果是危险品运输车，比如油罐车，车上的行车记录仪是不允许断电的，断电后行车记录仪不能工作，车主可能就要承担法律责任了。更多相关注意事项就来我们网站http://www.zkzdsljbc.com咨询看看吧。
Here, we should pay attention to one point: the batteries of the current mixer truck are all equipped with a master switch, but the original ones are not, so it is difficult to operate; Moreover, if it is a dangerous goods transport vehicle, such as an oil tanker, the dash cam on the vehicle is not allowed to be powered off. If the dash cam fails to work after power failure, the owner may have to bear legal liabilities. For more information, please visit our website http://www.zkzdsljbc.com Let's consult.
