Outside chain motor to set up limits

Step 1: open the small box on the motor and you see the original status

Step 2: press the UP on the switch, until the shutter reaches the ideal height, press STOP, then adjust the Copper, until it reaches to the end, you can hear a low Ding sound.

The Copper reaches its end

Step 3: highly fasten the silver color screw. If this screw is too loose, the shutter may not stop where you want to stop in future. 

Step 4: press DOWN, until the shutter closes and press STOP. 

Step 5: adjust this Copper, until it reaches to the end, and you can hear a small Ding sound, too. 

Step 6: highly fasten this screw, too. 

Till now, the limit set up has finished. 

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