1. (Because vinegar is a great de-gunking dishwasher drain cleaner!) The first step in cleaning a dishwasher drain is to empty the dishwasher, remove the cleaning racks and dishwasher filter. The dishwasher shares a drain with the kitchen sink, so if you have a garbage disposal, run it before washing the dishes to ensure that the drain is clear. Start by removing any food waste that may be present at the bottom of your dishwasher. Safety first! Try to blow through the hose to make sure it's clear. Take this opportunity to clean any dirt build up on the spray arm and the inside of the dishwasher door. Remove the bottom rack for easier access, then feel the area around the drain. Method 3 of 4: Cleaning the Exterior. You may have to pull the dishwasher out or locate it under the sink. Step 4: Perform a Check On the Drain Hose. #2 – Fill the detergent and the drying-agent dispensers with white vinegar, then run the dishwasher empty on the pots-and-pans cycle — to keep the dishwasher drain lines clean and free-flowing. Remove and clean the dishwasher filter. You should be able to tell where the blockage is by the symptoms: slow or no draining indicates an issue in the dishwasher drain or drain hose, while lackluster cleaning points to clogged spray nozzles. If your dishwasher is clogged, you may need to clean the dishwasher drain. Keeping Your Dishwasher Clean. In a small bowl, pour 1/4 cup (32 g) with 4 cups (950 mL) of hot water, then stir them together to form a creamy paste. 1. Whether you use a dishwasher cleaning tablet or clean your dishwasher with vinegar and baking soda, repeat the following steps every 30 days to keep your dishwasher running efficiently and your family’s dishes sparkling clean. If your dishwasher is underperforming or not fully draining, there's probably a blockage somewhere. Step 2 - Check the Dishwasher's Drain Hose. Find out where your dishwasher's drain hose is connected to the sink or the garbage disposal drain pipe. Before you start cleaning you dishwasher, it’s a good idea to quickly check the area around the drain. Once you've found it, loosen the pipe clamp and carefully disconnect the hose. Now it’s time to check the drain hose. Advertisement. The drain hose is the tube that links the dishwasher with your garbage disposal. Inspect The Drain. Regularly cleaning the inside of your dishwasher is an easy way to help prevent odors and the build-up of detergent and minerals. Not only is this necessary for cleaning the dishwasher, but it also reduces the chances of slipping and falling while working around the dishwasher. Check the Drain Hose. “How To Clean Dishwasher Drain” – And restore normal functions: Step 1: Clean Dishwasher Drain Filter . 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