Yes, there are a few steps you can take to check how your dishwasher is spraying water inside and troubleshoot why the top rack of dishes may not be getting clean:
Observation: Start by running the dishwasher without any dishes inside. Open the dishwasher door carefully during the wash cycle. Look for the positioning of the spray arms and observe if they are rotating freely and spraying water evenly. The spray arms are typically located at the bottom and top of the dishwasher.
Loading Configuration: Ensure that you're loading the dishes properly, especially on the top rack. Make sure that nothing is blocking the spray arm's rotation, and avoid placing tall items or large plates that can obstruct the water from reaching all the dishes on the top rack.
Cleaning the Spray Arms: Over time, the spray arms can get clogged with debris or hard water deposits, affecting their effectiveness. Remove the spray arms and clean them thoroughly with warm, soapy water. Use a small brush or toothpick to clear any clogged spray holes.
Checking Water Pressure: Low water pressure can impact the dishwasher's performance. Make sure that the water supply valve is fully open, and there are no kinks or clogs in the water supply line.
Inspecting the Filter: The dishwasher's filter can become clogged with food particles and debris, reducing water flow and spray effectiveness. Check and clean the dishwasher filter as per the manufacturer's instructions.
Running an Empty Cycle with Vinegar: If you suspect hard water deposits, run an empty dishwasher cycle with a cup of white vinegar placed on the top rack. This can help remove mineral build-up and improve water flow.
Detergent and Rinse Aid: Ensure you are using the correct type and amount of dishwasher detergent and rinse aid recommended for your dishwasher model. Using the right products can enhance cleaning performance.
Dishwasher Maintenance: Regularly perform dishwasher maintenance, such as cleaning the door gasket, wiping down the interior, and checking for any signs of damage.
If after trying these steps, you still experience issues with the top rack not getting clean, there might be an underlying problem with the dishwasher's pump, motor, or other components. In such cases, it's best to contact a professional dishwasher technician for a thorough inspection and repair.