How do I clean the filters in my dishwasher?
Remove the lower rack and position the bottom spray arm. Turn the inner filter counter-clockwise and remove the assembled inner filter and stainless steel filter. Clean the filters with a soft brush under running water, then reassemble and reinstall them by turning the inner filter clockwise until it clicks into place. For best performance, clean the filter after each load.
From the official LG Drain Series Dishwasher manual, page 40
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