It is testing the door’s balance by opening the garage door open manually and seeing the door’s balance after opening halfway. If it does not move it is not something to be worried about. If it moves, contact a technician.
After that, you can conduct a reverse contact test by placing a small 2 by 4 plank in the area where the garage door is located before close the door. The garage door ought to be able reverse once it is in contact with the board. If notyou require to modify the limit of downforce. Also, the narration says you need to make sure that the sensors are clean and aligned. You can test this by waving an object between the sensors and the door when it shuts.
After that, the voiceover says you should inspect the hinges to make sure they’re well-lubricated and secure, however do not use bolts on torsion springs. Make sure that the tracks are clean using a carburetor cleaner and remember to replace your battery remotes.
It is recommended to open the garage door using the plug-out to ensure that your backup battery is working. Also, you need switch the bulbs as per the manufacturer’s recommendations. 58k4a3z4rj.