I can dive deeper into the technical steps for any of these. PAX II 800 Door Controller Manual | PDF - Scribd
The opener will initiate a , driving the door to a full open position and then back down to a closed position. Pax-ii 800 Manual -
Thread the spring nut onto the carriage bolt finger-tight. Use a wrench to rotate the nut clockwise until it releases against the header sleeve. The chain must be tight enough to avoid slipping off the sprocket, but not overtightened. I can dive deeper into the technical steps for any of these