You are correct that the electric eyes graphic left are a safety feature mandated by federal law.
Setting garage door opener electric eye.
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They should be pointing directly at each other.
Check that the line of the string is level.
Sears craftsman garage door openers have an important safety feature that prevents the door from closing when something or someone is in the way.
But they are also required to be connected to the opener and adjusted properly or the garage door opener will not function.
When the beam is broken the garage door movement should reverse direction and the garage door should return to the fully open position.
Lay a level so the bottom runs along the string.
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Continue until the sensors are once again level.
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If the photo eye senses an obstruction it stops the door from closing and potentially prevents damage or injury to a vehicle.
This safety reversing sensor is actually a pair of.
The photo eye of an automatic opening garage door is a safety feature.
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So reconnect them to the opener and check their alignment.
To test the safety eye system start the door closing then use a controlled obstruction to break the safety eye beam.
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Chamberlain group cgi the corporate parent company to liftmaster chamberlain merlin and grifco is a global leader in access solutions and products.