Because the electric rolling shutter door is composed of end plate, drum, rolling shutter door motor, chain, guide rail, rolling shutter sheet, control cabinet and other components. The pushing and pulling of the rolling shutter door up and down needs to be realized in the guide rail. If the rolling shutter door is derailed, it will get stuck, which is easy to fail to get up and down or whether it can get down or not. If the rolling shutter door is loose, the door will slide down automatically, which is easy to cause injury to others.

導致這一現象的發生有以下幾種情況：

The following situations lead to this phenomenon:

一、卷簾門軸管斷裂。

1、 The roller shutter shaft tube is broken.

二、卷簾門軸管固定座螺栓松脫，使得固定座脫落。

2、 The bolt of the fixed seat of the roller shutter shaft tube is loose, causing the fixed seat to fall off.

三、卷簾門軸管與固定座穿釘螺絲掉落，使得軸管固定分離。

3、 The screw threading screws between the roller shutter shaft tube and the fixed seat fall off, so that the shaft tube is fixed and separated.

四、卷簾門葉片連接處脫鉤，或與軸管固定螺絲松掉使得門片掉落。五、門片卡住后被硬拉使得葉片脫節。

4、 The connection of the roller shutter leaf is decoupled, or the fixing screw with the shaft pipe is loosened, so that the door leaf falls. 5、 After the door is stuck, it is hard pulled to make the blade disjointed.

一定要排除故障進行維修。注意事項：

Be sure to troubleshoot and repair. matters needing attention:

1、在安裝過程中一定要注意線路的完整性，規范化操作和安裝卷簾門。

1. In the installation process, we must pay attention to the integrity of the line, standardize the operation and install the rolling shutter door.

2、我們在使用卷簾門時應注意卷簾門軌道及吊輪不能上油，否則吊架上的滾輪有滑動現象，使門發生碰撞。

2. When using the rolling shutter door, we should pay attention that the track and lifting wheel of the rolling shutter door cannot be oiled, otherwise the roller on the hanger will slide, causing the door to collide.

3、電動卷簾門脫軌脫鉤也可能是由于線路問題，可能控制線路中的某條線沒接好，也有可能是在搬運過程中某條線被拉斷，優先檢查排除電路問題之后再查其他項，例如查看電機引線與繼電器的插頭是否因震動脫落，造成故障。

3. The derailment and decoupling of the electric rolling shutter door may also be due to the line problem, a line in the control line may not be connected properly, or a line may be broken during handling. First check and eliminate the circuit problem, and then check other items, for example, check whether the connector of the motor lead and relay falls off due to vibration.

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