Roto skylight operator questions

A quick learner from Bedford, MA says:
May 18, 2021
The operator on our ROTO skylight is getting a bit tight. I have sprayed some WD0 on the chain with some improvement but please advise best way to lubricate the mechanism. Does the enclosure split apart at the mid line?

Also is the handle secured with an Allen set screw?

If no significant improvement is realized by better lubrication I plan to order a replacement operator. A photo of our operator is attached. The base dimensions are 2 x 10-3/4".

Thanks,
Allan
Thumbnail of the uploaded file named Roto_skylight_operator.jpg
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Tom from SWISCO responded:
May 20, 2021

If you already lubricated your operator with no result, then I don't think lubricating it more will change anything. Odds are the gears are wearing out and you will need to replace the operator.

As for how the handle secures, it depends on the handle. Most older handles use a set screw, but a lot of more modern ones are pressure fit. You'll just have to check it to see which one you're dealing with. It should be self-evident.
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