There are two times a year I love having a dishwasher: The evening of Yom Kippur, when we are rushing to clear the table and get to shul; and after the Pesach Seder, when the dishwasher runs on a timer. When I mentioned that I use the dishwasher on Passover several people asked about it.
The above article (Hebrew) by Rabbi A.M. (R’EM) HaCohen of Otniel appeared in last week’s edition of the alon “Shabbat be-Shabbato,” published by the Tzomet Institute. Rabbi HaCohen considers the late Rabbi Moshe Feinstein’s requirement to use boiling water, but rules that running it on the highest setting is enough. Rabbi HaCohen also allows keeping the same racks year-round, maintaining that modern dishwashers remove remainders of food during regular cleaning. He adds, “The Torah has pity on the money of (the nation of ) Israel.”
I translated Rabbi Cohen’s conclusion from the last paragraph:
Clean the dishwasher well, especially the filter and the sprayers (by taking them apart). To clean, it’s recommended to use a scale remover (instead of regular detergent) and run the machine. Let the dishwasher sit for 24 hours, then run it [again] on its maximum setting. One who is stringent will run it a second time, to clean it in cold water.
Preparing the dishwasher took me at least 3 hours. Before you take it apart, make certain you can put it together again and draw a diagram if necessary. Sephardi Lady told me she puts dishwasher parts in the washing machine, but the dirtiest parts of mine wouldn’t fit. I’ve decided the effort is worth it, as we’ll run the dishwasher seven or eight times during Passover.