Not sure what they are called, but I'm talking about the little devices low
on the garage door frame that detect when an object such as an animal is
under the door.
One of these got knocked out of alignment when something fell against it.
So now, the garage door won't close unless I hold the button down while it
I don't know how to align them so they work again. I have not been
particularly observant as to whether there is supposed to be a light showing
on both of them, or only one. Right now, there is a light only on one side
of the door frame.
Anyway, I'd appreciate some advice on how to align these devices. It is a
16 foot opening, so laying a board across from one to the other is pretty
On Tuesday, May 28, 2013 4:52:27 AM UTC-4, OMB wrote:
I'd try tying a long string around the one which wasn't damaged then take t
he loose end over to the damaged one. Lightly pull the string tight enough
so that you get a straight line without pulling the undamaged one off the w
all. Use that as a guide to align the devices.
A high-tech way to do it would be to use one of those leveler/measurer lase
rs, if you have one of those.
the loose end over to the damaged one. Lightly pull the string tight enoug
h so that you get a straight line without pulling the undamaged one off the
wall. Use that as a guide to align the devices.
sers, if you have one of those.
You can always pull a straight string from one to the other.
They only have to be off a few degrees left, right, up, down,
etc for the beam to miss. For the string to work, it would
have to been perfectly aligned to the light beam or at least
the frame of the transmitting unit, which is impossible to do.
There should be an AMBER LED light glowing on the sending unit
regardless of alignment.
The GREEN LED light on the receiving unit will only be glowing when the
units are in alignment.
If you have the AMBER light showing, go to the other unit and just move
it around until the GREEN light comes on. Alignment is NOT that
critical. You do not need to use string, a board, laser level or
micrometers <g> to adjust this.
Here's a video that will help if you still need it.
Note that IF the "something" that fell against it happened to be a kid
ramming a bicycle into it, or somebody letting a 12 lb sledgehammer
"bump" it, the unit may be broken and need replacement. You cannot
align a unit that is toast.
Seems one of those things that are a response to an uneeded problem.
I knocked mine out of alignment once and realigned it without needing
any "how-to" u-tubes, etc. Only took a few seconds.
Mostly just common sense.
The plaintiff's attorney will love your decision to duct tape them together.
Your insurance company, not so much.
If my youngest grandchild get hit by the door, they should kick him
out of high school. It will also stop if it hits something. I tempt
fate most every time I leave the garage also. I push the button on the
inside then step out as the door closes. That is a no-no.
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