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HeyBub[_3_]

wrote:
On Thu, 12 Feb 2009 18:14:45 -0600, "HeyBub"
wrote:

LouB wrote:

Or the attachment point.

Large Thanks to you and Hank for the effort. Will report back when
I solve the problem. What is "the attachment point"?

It may have another name. It's where and how the door attaches to the
opening mechanism. The opener may not know the door is all the way
down and keeps pushing. Maybe you can adjust the attachment point
such that the opener stops when the door is, oh, 1/2" from the full
travel. That is, the opener has gone as far as it can go and stops,
rather than stopping when it meets resistance.

That's what limit switches do. Not load limit, but physical travel.
You can adjust a limit switch to stop an inch from the floor, 6
inches, or 1/8". Or you can set it so it tries to lift the garage or
lower the driveway - in which case the overload switch shuts it off,
or more likely reverses it. If the limit is too low it will try to
tear the drive track off the wall.

Ah, thanks for the clarification. My opener never fails, so I don't get down
in the weeds with it. When it starts to squeak, I glob on a layer of chicken
fat and it's good to go for another five years or so.