How to Clean Your Dishwasher
Cleaning the Exterior
Iron and magnesium in the water usually cause rust. It can also come from a rusty water heater or rusty water lines. You can check for iron and magnesium by having an analysis done by awater treatment设备公司或测试实验室。要查找本地工厂，请联系您当地的合作延期系统办公室。他们应该能够告诉你如何获取水的样本并将其发送到分析。要去除污渍，尝试商业生锈处理，如RoVer Rust Remover。As a preventative measure, ask a plumbing contractor to install a filter that can aid in the control of rust.
Probably caused by a calcium or iron buildup, use citric acid (also known as sour salt) in liquid form, available at some large grocery stores (it was once widely used for canning) and many health food stores; you can also purchase it from some online retailers.把洗碗机腾出来，用柠檬酸填充洗涤剂杯，并运行完整的循环。在没有晶体的第二个循环中运行洗碗机，但用洗涤剂。
Cleaning Green Stains
这是由硬矿物引起的，随着时间的推移会导致damage to other components of the dishwasher。Install a water-softening system. You can temporarily remove the buildup by using citric acid, as directed for brown stains.
Cleaning the Interior—Including the Filter
After treating any stains, clean the interior of your dishwasher: Take the racks out, and use a toothpick to clear any gunk from the holes in the spinning arms. Wash the grate where the water drains, as well as the removable filter (if there is one) with warm, soapy water. Wipe the rubber door seal with a damp cloth soaked invinegar。Sprinkle one cup of baking soda on the bottom, then run the machine on a short hot-water cycle to clean any remaining stains and odors.