Almost any garage door opener you buy will open any garage door in America
The chain drive garage opener is the best-selling opener on the market. A motor pulls a chain, the chain pulls a carriage, and the carriage pulls a cable that opens the door. The direct drive opener works basically the same way except that the carriage travels along a large, threaded rod.
WHAT YOU NEED FOR THIS PROJECT
• The carriage raises and lowers the door and the carriage tube travels along it form the power unit to the front wall of the garage.
• Assemble carriage tube as directed.
• Make sure to seat the carriage tube pieces securely.
• Measure to verify the assembled length matches the length required by the manufacturer.
• Make any necessary adjustments.
• Mount the carriage on the front of the power unit.
• Attach the rail clamps, which will later connect to a bracket on the wall above the door.
• On some doors you’ll install switches and wiring at this point.
Follow the manufacturer’s directions because different makes and models attach differently.
• The header bracket holds the carriage tube to the wall above the door. The exact location depends on the type of door.
• Lift the power unit.
• Set it on top of a stepladder.
• Most units hang from angle irons and metal straps that have holes drilled in them at regular intervals.
• Bolt the angle irons to a rafter (or rafters) with lag screws.
• Attach the straps to the irons with hex-head screws.
• Attach the straps to the power unit with the hardware provided.
• Open the door several times to make sure it doesn’t hit the opener while moving.
• The door is opened by one arm that lifts it as the carriage travels along the tube.
• You must attach the bracket that connects the arm to the door before you can attach the arm itself.
• The exact location varies, depending on the door.
• Follow the manufacturer’s instructions.
• By law, all units have a safety device that shuts down the motor if something is in the path of a closing door. The safety device is usually a light beam and sensor.
• Mount one on each side of the door as directed.
• Plug the unit into its socket.
• Test the operation and make any necessary corrections.