很多朋友在安装、使用卷帘门时，经常会遇到一些故障，又不知道是什么原因造成的，也不知道该如何维修，今天就我自己修理卷帘门的故障跟大家聊聊

　　Many friends often encounter some malfunctions when installing and using rolling shutter doors, and they don't know what causes them or how to repair them. Today, I will talk to you about repairing the faults of rolling shutter doors myself

　　卷帘门容易出故障的位置就是导轨、卷轴、帘板及控制线路四项，前三项基本大家都可以搞定，就控制线路这一项，很多人还是有疑问。今天我碰到就是控制线路的故障。

　　The areas where rolling shutter doors are prone to malfunction are the guide rails, rollers, curtain panels, and control circuits. Most people can handle the first three items, but many still have doubts about the control circuit. Today I encountered a malfunction in the control circuit.

　　今天使用部门报到我这边，说卷帘门无法上升，就按上升按钮，还是在下降，导致卷帘门的门片脱轨，到现场后，手动升起卷帘门后，现场操作，确实如此，我们是内、外两扇门联动控制，内门正常，就外门无法上升，按照正常修理，我先检查外门的两个继电器，线圈正常，怀疑是触点问题，之前也发生这个故障，于是更换继电器，试开，不行，检查按钮开关的触点，也是正常。由于是联动控制，于是我拆除内门控制线路，单独试外门，结果还是一样，这就确定是外门的问题。

　　Today, the department reported to me that the rolling shutter door could not be raised, so I pressed the up button, but it continued to descend, causing the door panel of the rolling shutter door to derail. After arriving at the scene, I manually raised the rolling shutter door and operated it on site. It was indeed the case. We controlled the linkage between the inner and outer doors, and the inner door was normal, but the outer door could not be raised. According to normal repairs, I first checked the two relays of the outer door, and the coils were normal. I suspected it was a contact problem, which had occurred before. So I replaced the relay, tried to open it, but it did not work. I checked the contact of the button switch, which was also normal. Due to the linkage control, I removed the control circuit of the inner door and tested the outer door separately. The result was still the same, which confirmed that it was the problem with the outer door.

　　用万用表量上升及下降的两根控制线，没有短路，问题应该在电机后面的控制线路，一一检查该位置的线路，没有问题，这下脑子就蒙了！手动拉链条可以控制升和降，说明电机离合器正常，两个继电器也更换，上、下的行程开关也是正常，问题到底出在哪里？没有检查的是电容，这个电容是电机的启动电容20UF，难道是电容引起吗？没有可用的电容更换，于是我把内门的电容拆下来换上去，结果上升正常了！我从事维修工作已经20多年了，还没碰到过，电容的容量下降或坏了，会导致卷帘门不会上升。在市场上买了一个电容，恢复线路，卷帘门正常使用！

　　Use a multimeter to measure the two control wires for rising and falling, and there is no short circuit. The problem should be in the control circuit behind the motor. Check the circuit at that position one by one, and if there is no problem, your mind will be confused now! The manual zipper strip can control the up and down, indicating that the motor clutch is normal, the two relays have been replaced, and the up and down travel switches are also normal. Where exactly is the problem? The only thing not checked is the capacitor, which is the starting capacitor 20UF of the motor. Could it be caused by a capacitor? There was no available capacitor to replace, so I removed the capacitor from the inner door and replaced it, and the result showed that the rise was normal! I have been engaged in maintenance work for more than 20 years and have not encountered it before. If the capacity of the capacitor decreases or breaks, it will cause the rolling shutter door to not rise. I bought a capacitor in the market, restored the circuit, and the rolling shutter door is functioning normally!

　　不知各位在平时修理中是否或碰到跟我一样的故障，往往就被我们忽视的部件，有可能就是问题所在！希望我的经历会给你们一些启发！

　　I don't know if you have encountered the same faults as me during regular repairs, which are often overlooked components. It may be the problem! I hope my experience will give you some inspiration!

　　感谢观看，我会每天发一些自己在工作中碰到的维修问题，关注我，一起交流经验！

　　Thank you for watching. I will post some repair problems I encounter at work every day, follow me, and exchange experiences together!

　　本文由  济南卷帘门 友情奉献.更多有关的知识请点击  http://www.jnzxmy.com/   真诚的态度.为您提供为的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Jinan Rolling Shutter Doors For more related knowledge, please click http://www.jnzxmy.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.