Paul from SWISCO responded:
September 28, 2016
Thanks for posting. It sounds like the inside worm gear is becoming worn, and is likely at the end of its lifespan. It may be time for a new operator.
Based on your picture, I believe our 39-107 and 39-114L match, but that's all I can say. For the operator itself, I would need to see more of it. If you can open the window and take a top-down picture, that would help. We need to see as much of the mechanism in one picture as possible. You may also want to watch the video below. This should give you more insight on how these work. |
Paul from SWISCO responded:
September 29, 2016
Not a problem, we're happy to help. Let me know whenever you're able.
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