The impellers on a dishwasher are located in two distinct areas, each serving a crucial function: the wash impeller is found inside the tub, typically beneath the lower spray arm assembly, and the drain impeller is situated at the bottom of your dishwasher, usually integrated into the drain pump.
Understanding Dishwasher Impellers
Your dishwasher efficiently cleans dishes and drains water thanks to two specialized impellers. These components are vital for ensuring proper water circulation during the wash cycle and effective removal of dirty water afterward. Knowing their locations can be helpful for routine maintenance and troubleshooting common issues.
The Wash Impeller: Circulating Cleanliness
The wash impeller is responsible for circulating the hot, soapy water throughout the dishwasher tub, ensuring that spray arms receive adequate pressure to clean your dishes thoroughly.
- Location: This impeller is conveniently accessed from inside the tub. It's typically located beneath the lower spray arm and the main filter assembly at the bottom of the dishwasher basin.
- Function: It draws water from the sump area and forces it up through the spray arms, creating the powerful jets needed for washing.
- Access: To inspect or clean the wash impeller, you simply need to remove the lower dish rack, spray arm, and the filter assembly. This means there's no need to pull out your entire built-in dishwasher from its installation space.
- Common Issues: Blockages from food debris, broken glass, or small foreign objects can hinder its performance, leading to poor wash results.
The Drain Impeller: Expelling Dirty Water
After the wash and rinse cycles are complete, the drain impeller takes over, pumping the dirty water out of the dishwasher and into your home's drainage system.
- Location: The drain impeller is located at the bottom of your dishwasher, typically as part of the drain pump assembly. This means it's usually situated underneath the dishwasher unit itself, rather than inside the main tub.
- Function: It rapidly expels used water from the dishwasher, preventing standing water and odors.
- Access: Accessing the drain impeller often requires pulling the dishwasher out from under the counter and laying it on its side or back to reach the underside components.
- Common Issues: Similar to the wash impeller, blockages can prevent the dishwasher from draining properly, leaving standing water in the tub.
Key Differences Between Wash and Drain Impellers
Understanding the distinction between these two critical components is key for effective troubleshooting.
| Feature | Wash Impeller | Drain Impeller |
|---|---|---|
| Primary Function | Circulates water for washing and rinsing | Expels dirty water from the tub |
| Typical Location | Inside the tub, under the spray arm/filter | Bottom of the dishwasher, within the drain pump |
| Access Method | From inside the tub | From the bottom of the dishwasher |
| Common Problem | Poor spray, unclean dishes, water not circulating | Standing water in the tub, no draining |
Why Impeller Location Matters for Maintenance
Knowing where each impeller is located is crucial for efficient dishwasher maintenance and problem-solving. For instance:
- Inside-the-Tub Access: The wash impeller's accessibility from inside the tub simplifies routine checks for food debris or foreign objects that might impede its rotation. Regularly cleaning the filter and inspecting this area can prevent many common washing issues. For detailed steps, refer to a dishwasher maintenance guide.
- Bottom Access: While accessing the drain impeller might require more effort, understanding its location guides you if you encounter draining problems. Always remember to unplug your dishwasher from its power source before attempting any inspection or repair.
Troubleshooting Impeller Issues
- Poor Washing Performance: If your dishes aren't getting clean, or the water isn't spraying effectively, the wash impeller or its immediate area might be clogged.
- Standing Water: If water remains in the bottom of your dishwasher after a cycle, the drain impeller could be blocked or malfunctioning.
Regular inspection of these areas, especially the accessible wash impeller and filter, can significantly extend the life and efficiency of your appliance.
