They do this by using an electric eye sensor that crosses the doorway.
Garage door opener eye alignment wiring.
The eye send out a 1 to 2 wide been depending on the width of the door.
Use a spirit level to see if the string is level.
Loosen one sensor and move it until the string is level.
The photo eye of an automatic opening garage door is a safety feature.
To test the alignment tie a length of string between the two sensors.
Mark a line on the header wall 2 5cm above the highest point of travel.
Garage door sensors protect your family possessions and pets by not allowing the heavy garage door to close if there is anything in the glide path.
If it isn t then you know that the sensors need to be adjusted.
While inside your garage close the door and mark the vertical centerline of the garage door.
Chamberlain garage door opener how to figure out which wires go where.
Sometimes you get a mess of wires and you don t know what wires go where.
To all align simply adjust eh both eye until both leds on solid and not flashing or off.
If the beam of light is interrupted while the garage door is closing the door will stop and rise back up.
When this safety mechanism is engaged both genie garage door openers and liftmaster opener will deactivate the wireless capability of the garage door opener.
How to align garage door sensors.
Garage door sensors utilize a photo eye sensor and a beam of infrared light that goes between the two units.
Strip 7 16 inch of insulation off the ends of the black and white wires on the new eye s wiring with wire strippers.
Open the door to the highest point of travel.
Start by inspecting the wires that are going into both of the sensors.
If you follow.
The units are placed near the ground on either side of the garage door.
If the photo eye senses an obstruction it stops the door from closing and potentially prevents damage or injury to a vehicle.
Do both garage sensors need to be green.
Extend the line onto the header wall above the door spring.
Press the wiring against the garage s wall and secure with insulating staples.
Now that you have made sure there are no obstructions and that both sensors are aligned properly your garage door opener should work.
If the sensor doesn t receive the beam emitted by its opposite number the door won t close.