This weakening of the springs or points of attachment would often lead to an inadvertent explosive failure flinging the broken spring components across the garage, embedding the spring or steel components into the garage walls, cars or other items in the path of travel. Unfortunately, sometimes people were in the path of travel of these explosive occurrences. As these springs failed, as an attempted safeguard, some manufacturers devised a "caging" system for the springs. These cages were retrofitted onto the stretched springs in an attempt to capture the parts that would release if a failure occurred. While these caging devices were helpful, they were not completely effective. Some of these spring devices are still in use today. Whenever this condition exists or the quality of garage components are questionable, a qualified professional service technician should be consulted.
These doors can be chain driven either manually, or can be automated using electric motors. Roll up doors require more frequent evaluation and servicing than a standard overhead garage door. The tracks that are mounted vertically on both sides of the garage opening need maintenance and cleaning more frequently, and are often blocked by foreign obstructions or damaged by collision of some type. These roll up doors are often held open by some type of ratcheting action. Proper balancing of these doors is often more important than an overhead type of door, as the weight of these type of doors is normally much greater than an overhead door.
Dallas Police Liutenant Barry Payne of the North Central Patrol Division was quoted as saying: "Citizens must realize when they leave a garage door opener in their car in their driveway, it is like leaving a key to their house outside where everyone will know where it is. The solution is simple: Park in the garage, or dont leave a garage door opener in the car in the driveway. I cant say it any clearer than that. Actually, this home invasion could have been avoided in three different ways: the family could have parked their car in the garage, they could have parked outside of the garage, yet removed the garage door opener from the vehicle, OR they could have securely locked the door going from the garage to the home.
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