Overhead Door® openers and garage doors are built with longevity in-mind. By performing a few routine tasks, you can help ensure your garage door system stays safe and stands the test of time. One important part of garage door system routine maintenance is to make sure the photo-eyes have not gone out of alignment. The photo-eyes are the infrared sensors which monitor whether the space at the bottom of your garage door is clear. When these sensors are not lined up properly they will keep your door from closing. Make sure to occasionally check your photo-eyes’ alignment to ensure they are correctly detecting obstructions to keep your garage door safe and operating properly.
The tech that serviced your door must not understand simple mechanics. The tracks do not move, so they do not need to be lubricated. All that does is make a mess. The rollers and hinges DO move, so it is logical to lubricate them, at the hinge barrel or pivot point, and in the little area near the stem of the rollers where you can see the bearings. Adding a bit of lube to the torsion spring also cuts down on the friction between the coils and makes the spring glide easier. However, too much will make it spritz out lube as the door opens and closes, and that it less than desirable. Same thing for pulleys on an extension spring door.
In most Rite-Hite dock levelers, a ring rolls in the curve of a lip keeper as someone walks across the deck of the dock leveler. This allows the lip assist bar attached to the ring to push the lip up. Over time, the bar connecting the ring and the lip assist bar wears out, and the ring is unable to stay on the track of the lip keeper.This indirectly prevents the lip from raising when someone pulls the pull chain. This tutorial demonstrates how to properly replace a worn lip assist bar in a Rite-Hite dock leveler.
The torsion springs on steel rolling doors work the same way as other torsion springs in the garage door industry. When the door is closed, the spring is wound. The spring is secured to a spring anchor bracket on one end and to the shaft on the other. When the steel rolling door opens, the spring in the barrel supports most of the door weight. The remainder of this weight is lifted by the chain hoist or the operator.