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3
Glossary
Here are some basic terms you may encounter as you prepare and install your garage door opener.
Preparation (continued)
Track
Track
Roller
Drum
Hinge
Torsion
springs
Torsion bar
Bearing
plate
Center bearing
plate
Electrical
outlet
Sectional door
Floor
Door seal
Term Definition
Bearing Plate Acts as a support for the torsion bar. The bearing and mounting plate are typically located
above the garage door.
Cable Tension
Monitor
The cable tension monitor detects any slack in the garage door cables. Failure to properly
install the cable tension monitor may cause the cables to be thrown and may result in a
hazardous situation. (Not shown below)
Door Seal The door seal is located at the bottom of the door and helps to keep outdoor elements from
entering the garage.
Drum Drums are round, grooved spools on the torsion bar that keep door cables orderly.
Extension Springs Extension springs are NOT compatible with this opener. Extension springs are typically
mounted along the horizontal section of the track and extend from the front of the door
opening to the back hang. The springs are intended to make a door lighter so you can easily
open and close the door by hand.
High Lift
Sectional Door
A type of garage door constructed with multiple panels that slide along a track inside the
garage. The track runs vertically up the wall beyond the top of the door opening several
inches before encountering the curve in the track. The extended distance above the top of the
garage door determines the amount of a high lift.
Protector System
®
The Protector System
®
is composed of a set of sensors and transmitters that act as a safety
measure to prevent personal injury or property damage caused by a closing garage door. See
also: Safety Reversing Sensor.
Roller Small wheels which allow the door to move up and down the track.
Safety Reversing
Sensor
The safety reversing sensors are a set of sensor eyes that detect obstructions in the path of
the garage door. If an obstruction is found, the sensors tell the door to reverse direction.
(Not shown below)
Torsion Springs A torsion spring is a type of spring that counter balances the garage door. The torsion spring is
located above the door on the torsion bar. The springs are intended to make a door lighter so
you can easily open and close the door by hand. Consult a trained door systems technician if
you need the springs adjusted or replaced.
Torsion Bar A torsion bar is a horizontal metal bar mounted above the garage door. The torsion springs
are located on the torsion bar. Most torsion bars are hollow, while some are solid. Some
solid torsion bars may have a groove called a keyway that runs the length of the bar.
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