Enables the garage door to be raised or lowered mechanically.
Garage door operation description.
Garage doors generally either have a chain belt or screw drive.
The garage door rides the tracks as it opens.
It goes out without much drama there s no audible snap as the torsion spring breaks no parts dangle loose.
Larger doors are usually made in several jointed panels that roll up on tracks across the garage ceiling or into a roll above the doorway.
Garage doors are frequently large enough to accommodate automobiles and other vehicles.
Detects the presence of an object by using a light transmitter.
The operating mechanism is spring loaded or counterbalanced to offset the weigh.
They re made up of two metal beams that run vertically on both sides of your garage door from the inside.
Small garage doors may be made in a single panel that tilts up and back across the garage ceiling.
It will show you a few simple maintenance procedures that you.
Attaches to the header to support the spring and shaft.
If the beam is blocked the garage door will not close.
Attaches the horizontal track to the ceiling for added support.
The garage door dies some time during its 13 476th operation while it s being closed.