DIY Guide: How to Replace Dishwasher Impeller

Maintaining a dishwasher in top working condition is crucial for the efficient cleanup of your kitchenware. The dishwasher impeller plays a key role in ensuring that the water is circulated effectively during the wash cycle. Over time, the impeller can wear out or become damaged, affecting the dishwasher's performance. In this guide, we will provide step-by-step instructions on how to replace the dishwasher impeller, empowering you to take control of your appliance maintenance and keep your dishwasher running smoothly.

What Is an Impeller Washer?

A dishwasher impeller is a crucial component responsible for creating water pressure and directing water flow within the dishwasher. It is typically located within the pump assembly and is designed to circulate water efficiently to clean dishes and utensils thoroughly.

What Does an Impeller Do in a Dishwasher?

The impeller is responsible for generating water pressure and circulating water throughout the dishwasher. As the impeller rotates, it propels water through the spray arms, ensuring that a powerful, consistent flow of water reaches all areas inside the appliance. This vigorous water circulation helps dislodge food particles and residue from the dishes, utensils, and interior surfaces, contributing to thorough cleaning during the wash cycle. 

Types of Impellers Used in Dishwashers

Signs of a Faulty Dishwasher Impeller

How to Replace Impeller on Dishwasher

Replacing impellers includes several steps: 

Prepare the dishwasher

• Turn off the power and water supply: Safety is paramount. Locate the dishwasher's power source and turn it off from the circuit breaker. Similarly, shut off the water supply valve connected to the dishwasher to prevent any leaks or spills during the replacement process.
• Remove the lower dish rack: Open the dishwasher and slide out the lower dish rack to create space and easy access to the impeller assembly located at the bottom of the unit.

Remove the impeller

• Detach the impeller: Depending on the dishwasher model, the impeller can be accessed by removing the lower spray arm and unscrewing the impeller nut, securing it in place. Carefully detach the impeller from the motor shaft by turning it counterclockwise and gently pulling it off.
• Handle and inspect the impeller: When removing the impeller, handle it with care to avoid any damage. Inspect the impeller for signs of wear, damage, or debris accumulation that may be affecting its performance. Clean the impeller if necessary before proceeding.

Inspect the impeller pump

• Examine for damage: Check the impeller pump thoroughly for any cracks, chips, or wear that could impair its function. Ensure there are no obstructions or debris lodged in the impeller assembly that may hinder water circulation.

Install the new impeller

• Place the new impeller: Position the new impeller onto the motor shaft by aligning it properly. Turn the impeller clockwise to secure it in place, ensuring a snug fit that allows for smooth rotation during operation.

Reassemble the dishwasher

• Reattach removed components: Begin reassembling the dishwasher by returning any components previously removed, such as the impeller nut, lower spray arm, and lower dish rack. Make sure each part is securely fastened and properly aligned.

Test the dishwasher

• Run a test cycle: With the new impeller installed and all components reassembled, run a test cycle on the dishwasher to ensure that the impeller is functioning correctly. Monitor the water circulation and check for any unusual noises or leaks during the operation

Maintenance Tips for Dishwasher Impellers

• Regular checks: Inspect for Debris: Regularly check the impeller for any debris or buildup that could obstruct its movement. 
• Clean the impeller: Use a soft brush or cloth to gently clean the impeller while being cautious not to bend or damage its blades.
• Use rinse aid: Utilize rinse aid in your dishwasher to help prevent mineral deposits and buildup that could affect the impeller's efficiency. 
• Load dishes properly: Load dishes and utensils in a way that does not obstruct the impeller's movement. 
• Choose detergents wisely: Select dishwasher detergents that are compatible with your appliance and water hardness level.

Checkout: 9 Essential Commercial Dishwasher Maintenance Tips

Troubleshooting Common Issues After Replacement

• Check water supply: Ensure the water supply is adequate and that the water inlet valve is fully open. Insufficient water pressure can affect the dishwasher's cleaning performance.
• Inspect spray arms: Check the spray arms for clogs or blockages that may impede water flow. Clean the wash arms and ensure they can freely rotate during the wash cycle for even water distribution.
• Filters: Inspect and clean the dishwasher filters to prevent debris from clogging the system and affecting water flow. Remove any accumulated food particles or residue that could impact cleaning results.
• Verify detergent usage: Confirm you are using the correct type and amount of detergent. Using too much or too little detergent can impact cleaning efficiency. Adjust detergent usage based on water hardness levels.
• Run maintenance cycles: Perform regular maintenance cycles, such as running vinegar or dishwasher cleaner through an empty cycle, to help remove buildup and improve cleaning performance.

Types and Prices of Dishwasher Impellers for Various Brands

Refer: DIY Home Repair: How to Clean and Replace a Dishwasher Drain Pump

Replacing a dishwasher impeller can be a manageable DIY task with the right information and tools at hand. By following the procedure, you can efficiently replace the dishwasher impeller and restore the proper functioning of your appliance. Remember to gather the necessary tools, disconnect power sources, and exercise caution during disassembly to access and replace the impeller. Pay close attention to the impeller's orientation and secure installation to ensure proper functionality. PartsFe is your one-stop shop for all your commercial kitchen equipment parts needs. you can find all types of dishwasher parts, including impellers, pumps, water valves, and dispensers. Get your essential items now.

FAQs

How does an impeller work on a dishwasher pump?

The impeller on the pump rotates to draw water in and then propels the water out through the spray arms to clean the dishes.

How often should the dishwasher impeller be replaced?

There isn't a set timeframe; it's typically replaced when an issue arises with the dishwasher's performance.

Can I clean the dishwasher impeller instead of replacing it?

Cleaning the impeller can sometimes resolve minor issues, but if it's damaged, replacement is usually necessary.

Is it necessary to disconnect the dishwasher from power and water sources before replacing the impeller?

Yes, for safety reasons, always turn off the power and water supply to the dishwasher before attempting any repairs.

How can I access the impeller for replacement?

Typically, you will need to remove the dishwasher's lower spray arm, drain cover, and other components to reach the impeller assembly.