Just installed a new Schier grease trap today for a dishwasher. Had inspection and everything is sized properly. When the dishwasher drains after its cycle it overflows the receptor. The recepter is a 2" standpipe and is 14" tall per code. If I were to reduce the outlet size of the dishwasher to 1 1/4" do you think that it will slow down the drain enough to keep it from overflowing? Any help would be appreciated. The standpipe increases by means of a 3x2 coupling and the drain is air breaked.
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