An Idea........
Perhaps the bottom of the door or something hanging off the door is
triggering the electronic safety sensors usually present at the
bottom / sides of the garage door? Some of them have a LED or light
on them that goes on/off if the beam is interrupted. Have someone
close the door from outside while you stare at the light and see if it blinks.
Steve
At 08:17 PM 1/3/2008, you wrote:
>I have 3 openers. They're 1/3hp Lift Master units with chain drive.
>I'm not sure how to adjust them. They don't stop at the bottom,
>but instead hit bottom and then reverse direction and head back up.
>I'm going to do some web searching, but thought I'd check here
>first.
>Super thanks.
>
>Steve Hammatt
>Mount Vernon WA USA
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