I can only try:I think that is how all the grama jigs by the Institute for Science and Halacha work, with a random (within limits)delay. I could also be melamed zchus for those instututions based on grama. In a really big system, there is not an immediate delivery of waste to the tank, and there can also be variability, and there can be multiple flushes at once as well. I don’t know if the hanhola of these places ever entertained the question, and the size of those tanks was 1000-1500 gallons, with monster 4″ discharge twin pumps. In the modern home size, it depends on the length of the float switch tether. If set short, one flush will do it, even the 6l flush. If left long, it can be three flushes, but then the float is subject to hanging up and other problems. You also have to figure the slow failure of the check valve. Before it totally fails, it leaks, and raises the level of the tank. About your on/off, I would not rely on ploni almoni to check that the flush was during the off cycle. I have the same kasha with the RY’s system, about flushing when the pin is in, it would be hard to tell, and a hard habit to learn. Being in the business made me an astute observer of human nature.
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