Garage door openers manufactured since 1982 are also required to reverse the garage door if it strikes a solid object. Garage door openers manufactured and installed in the United States since 1982 are required to provide a quick-release mechanism on the trolley that allows for the garage door to be disconnected from the garage door opener in the event of entrapment. The manufacturer's instructions provide guidance to the user on the proper adjustment and maintenance of the opener. An improperly adjusted garage door opener can exert strong and deadly forces and might not reverse the garage door in an emergency. Safety The garage door is generally the largest moving object in a home. This is especially helpful for families with children who may forget a code and are.