I built a bifold hangar door that used cable and a winch attached to the rafter for lifting. It was probably similar to your folding stairs. A rotary limit switch was attached to the end of the drum axil. It could be set for multiple turns and had adjustable stops for open and closed (i.e., down). I let the cables go just a little slack in the down position to take strain off the winch.
John
I too am wiring a bifold hanger door. I will use a 1hp reversible motor with a drum switch. I want limit switch to stop the door at the top and a limit switch to stop the door motor at the bottom. Can you advise me as to how to accomplish this? Attached is the wiring diagram for the drum switch.
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