At present, more and more electric rolling shutter doors are used in the market, and the traditional manual rolling shutter door market is less and less; There will be more problems with more use. Let's take a look at the common faults and maintenance methods of electric rolling shutter door.

1、电动机不动或转速慢

1. The motor does not move or the speed is slow

故障原因：一般是线路断路、电机烧损、停止按钮没复位、限位开关动作、负载较大等引起。

Fault causes: generally, it is caused by open circuit of the line, burning loss of the motor, failure to reset the stop button, action of the limit switch, large load, etc.

处理方法：检查线路、并接通；更换烧损电机；更换按钮或重复按动几次；拨动限位开关滑块使它脱离微动开关触点，并调整微动开关位置；检查机械部分有无卡阻，若有则卡阻清理障碍物。

Treatment method: check the line and connect it; Replace the burned motor; Replace the button or press it repeatedly for several times; Toggle the limit switch slider to separate it from the microswitch contact and adjust the microswitch position; Check whether the mechanical part is blocked. If so, eliminate the blocking and clear the obstacles.

2、控制失效

2. Control failure

故障发生的部位及原因：继电器（接触器）触点粘死、行程微动开关失效或触片变形、滑块紧定螺钉松、靠板螺丝松使靠板移位，使滑块或螺母不能随丝杆转动而移动、限位器传动齿轮破损、按钮上、下键卡死。

Location and cause of fault: the contact of relay (contactor) is stuck, the travel microswitch is invalid or the contact piece is deformed, the fastening screw of slider is loose, the screw of backup plate is loose, so that the backup plate is displaced, so that the slider or nut cannot move with the rotation of screw rod, the transmission gear of limiter is damaged, and the upper and lower keys of button are stuck.

处理方法：更换继电器（接触器）；更换微动开关或触片；紧定滑块螺钉并使靠板复位；更换限位器传动齿轮；更换按钮。

Treatment method: replace the relay (contactor); Replace microswitch or contact piece; Tighten the slider screw and reset the backup plate; Replace the transmission gear of the stopper; Replace the button.

3、手拉链不动

3. Hand zipper does not move

故障原因：环形链条堵住十字槽；棘爪无脱离棘轮；压链架卡死。

Fault cause: the ring chain blocks the cross groove; The pawl does not disengage from the ratchet wheel; The chain pressing frame is stuck.

处理方法：理顺环形链条；调整棘爪与压链架相对位置；更换或润滑销轴。

Treatment method: straighten out the ring chain; Adjust the relative position between the pawl and the chain pressing frame; Replace or lubricate the pin shaft.

4、电机振动或噪声较大

4. Large motor vibration or noise

故障原因：刹车盘不平衡或断裂；刹车盘无紧固；轴承失油或失效；齿轮啮合不顺、失油或磨损严重；电机电流声或振动。

Fault cause: the brake disc is unbalanced or broken; The brake disc is not fastened; Bearing oil loss or failure; Gear meshing is not smooth, oil loss or serious wear; Motor current, sound or vibration.

处理方法：更换刹车盘或重新调整平衡；紧固刹车盘螺母；更换轴承；修配电机轴输出端齿轮、润滑或更换；检查电机，如电机坏损则更换。

Treatment method: replace the brake disc or readjust the balance; Tighten the brake disc nut; Replace the bearing; Repair, lubricate or replace the gear at the output end of the motor shaft; Check the motor and replace it if it is damaged.