My question was regarding מפרק which is a תולדה דדש
If you are a considering shabbos clock a גמרא for other מלאכות why would it not work for pumping please advise?
Interesting. Assuming the women connects the pump before it turns on and does not have to touch the pump at anytime while its in use that may be permitted. I’d have to ask the Rav and get back to you. Haven’t thought of this before.
Unless it’s possible to connect it before the timer goes on and both the mother and pump is not touched, adjusted or moved in anyway while the it is working, all of which I don’t see as being practical or possible, than it would be permitted. In order for it to be considered a grama, then not only does the pump need to be attached before the timer goes off but while the pumping is occurring there can be no direct action. Moving or adjusting the pump would change it from a indirect action to a direct action. Both the turning on of the pump as well as the pumping process both need to be a grama in order for it to be permitted. Once you adjust something that goes away.
If your timers was plugged in before shabbat and all you are doing now is moving a pin to make it go off in the future that is ok. You may not move a pin for it to go off immediately. And you may not plug in the timer on Shabbat either.
Thanks for the response. Just to be clear, if it’s early in the morning and my timer is set to go off at noon I’m allowed to move the pin to have it go off at 11am, correct?