First of all, we need to know whether the stainless steel electric retractable door is monorail or trackless, and then to determine whether the motor chain is loose.
首先我们要知道不锈钢电动伸缩门是单轨的还是无轨的，然后要判断电机链条是否松动。
If the chain is found to be loose, the motor chain needs to be adjusted at this time.
如果发现链条松动，此时需要调整电机链条。
Then check whether there are problems with the motor and control system, including the setting of the control system parameters.
然后检查电机和控制系统是否有问题，包括控制系统参数的设置。
If the door body is relatively tight, it will lead to improper door assembly and poor operation.
如果门体比较紧，会导致门体装配不当，操作不良。
At this time, only need to adjust the tightness of the main frame of the door body.
这时只需要调整门体主框的松紧度即可。
Then we need to see if the weight of the head substrate is just right, because now many small manufacturers will replace the weight of the head substrate in order to reduce costs.
那我们就需要看看头基板的重量是否恰到好处，因为现在很多小厂家为了降低成本都会更换头基板的重量。
For example, a 15-meter door comes standard with an 8-centimeter plate, but only a 3-centimeter plate, which can lead to a loss of weight in nose traction, causing problems.
例如，15米的车门标配8厘米的板，但只有3厘米的板，这样会导致鼻子牵引力的减重，造成问题。