How to maintain the motor limiter of rolling shutter door?

1, which often appears mainly because the limiter runs too far. The limiter of door rolling machine is generally divided into upper limit and lower limit. Sometimes there is a sudden power failure, so the user can only open and close the door with the zipper or pull the automatic sliding wrench. At this time, if you don't pay attention to whether the limit switch is in place, it is easy to cause the limit to run too far and fail.

Generally, if the lower limit runs too far, there will be a phenomenon that the next time there is electricity, it can only go up and down; If the manual shutter door is pulled up and restricted from running too far, the next time there is electricity, it will only be down but not up. The problem of solving this situation is simple, as long as the limit switch is adjusted back to the effective limit range of the transmission screw, and then the lower limit is adjusted to lock the screw.

2. It may be that one of the control lines is not properly connected or pulled out. Every rolling door machine of Aohu has been inspected before leaving the factory, and it is unlikely to break normally, and may be pulled off during handling or installation. We also found that some installers use the lead wire of the door rolling machine as a handle to lift the motor, which is correct, but it often causes the motor lead wire and relay plug to fall off, leading to failure.

3. As mentioned above, it is only based on the troubleshooting experience of common electric shutter doors. For the sake of safety, it is best to find a professional to maintain it.