Which lock is the shutter door? The key is inserted. You can only pull out the key after locking the door. After opening the door, which key can't be pulled out. I don't know why, I beg you.

You can't turn to the position, you need to turn to the number of turns. Usually two laps.

Hand-pulled zipper does not move-failure reason: endless chain blocks the cross groove; The pawl cannot be separated from the ratchet wheel; The chain press frame is stuck.

Treatment method: straighten out the endless loop chain; Adjust that relative position of the pawl and the chain press frame; Replace or lubricate the pin shaft.

Determine what kind of remote control your remote control is, and know the crystal frequency model and chip model of your remote control. Note that incompatible chips cannot be copied. (You need to disassemble the remote control carefully to check the model) Just buy the corresponding model from Taobao or other online shopping.

If the extended data is not maintained for a long time, the hidden dangers and minor faults of electric rolling gates cannot be dealt with in time. After the motor gets a certain running current, it runs forward to transfer power to the synchronous belt, and then the synchronous belt transfers power to the spreader system to open the door leaf. After the door leaf is opened, the controller will make a judgment. If it is necessary to close the door, the motor will be informed to move in the opposite direction to close the door leaf.

It will change from a minor fault to a major fault, which may eventually lead to the paralysis of the automatic electric door. When the induction detector detects someone entering, it sends a pulse signal to the main controller, and the main controller informs the motor to run after judgment, and at the same time monitors the number of revolutions of the motor to inform the motor to apply force at a certain time and enter a slow running.