1. The motor of fast rolling shutter door does not move or the speed is slow.

故障原因：快速卷簾門的這一故障原因通常是由于斷線，電機燒壞，停止按鈕未復位，限位開關動作以及大負載引起的。

Fault cause: the fault cause of the fast rolling shutter door is usually caused by disconnection, motor burnout, non reset of the stop button, action of the limit switch and heavy load.

處理方法：檢查線路并打開;更換燒毀的電動機;裝回按鈕或反復按它;推動限位開關滑塊使其脫離微動開關觸點，并調整微動開關的位置;檢查機械部件沒有卡紙，卡紙并障礙物。

Treatment method: check the circuit and turn it on; Replace the burned motor; Replace the button or press it repeatedly; Push the limit switch slider away from the microswitch contact and adjust the position of the microswitch; Check that there is no paper jam in mechanical parts, eliminate paper jam and remove obstacles.

2、快速卷簾門控制故障。

2. Fast rolling shutter control failure.

故障原因：繼電器接觸棒，行程微動開關故障或接觸鏡變形，滑塊緊固螺釘松動，板螺釘是疏松。由于板的移位，滑塊或螺母無法隨著螺桿的旋轉而移動，限制器的傳動齒輪斷裂，并且按鈕的上下按鈕被卡住。

Fault cause: relay contact rod, travel microswitch fault or contact lens deformation, slider fastening screw loose, plate screw loose. Due to the displacement of the plate, the slider or nut cannot move with the rotation of the screw, the transmission gear of the limiter is broken, and the up and down buttons of the button are stuck.

處理方法：更換繼電器;更換微動開關或觸點;固定滑動螺釘并復位板;更換制動器驅動齒輪;更換按鈕。鏈條沒有移動。失敗的原因：環形鏈阻塞了十字槽;棘爪無法脫離棘輪;鏈架被卡住。處理方法：拉直環鏈;調整棘爪和鏈條框架的相對位置;更換或潤滑銷釘。

Treatment method: replace the relay; Replace microswitch or contact; Fix the sliding screw and reset the plate; Replace the brake drive gear; Replace the button. The chain does not move. Cause of failure: the ring chain blocks the cross groove; The pawl cannot disengage from the ratchet wheel; The chain frame is stuck. Treatment method: straighten the ring chain; Adjust the relative position of the pawl and the chain frame; Replace or lubricate the pins.

3.快速卷簾門電動機振動或噪音大。

3. The motor of the fast rolling shutter door has high vibration or noise.

故障原因：制動盤不平衡或損壞;制動盤未擰緊;軸承失油或失效;齒輪嚙合不暢，油流失或磨損嚴重;電動機電流聲或振動。

Fault cause: the brake disc is unbalanced or damaged; The brake disc is not tightened; Bearing oil loss or failure; Poor gear meshing, oil loss or serious wear; Motor current, sound or vibration.

處理方法：更換快速卷簾門制動盤或重新調整天平;擰緊制動盤螺母;更換軸承;修理電動機軸輸出端齒輪，進行潤滑或更換;檢查電動機，如果電動機損壞，請更換。

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