How to Change the Drain Pump of a Dishwasher

Jul 18, 2023, 18:45pm

The drain pump is an important part that allows the evacuation of waste water if the flow cannot be done naturally.

Signs of a malfunctioning drain pump are:

  • The total absence of emptying.
  • A random evacuation.
  • The pump makes an unusual noise during the drain cycle.
  • Your dishwasher is leaking.
  • A problem occurs when switching on the device.

The drain pump is often located on the lowest position of your device so that all flows can drain completely.

The drain pump in a dishwasher is responsible for removing dirty water from the dishwasher after each cycle. Over time, the pump may become clogged, damaged, or worn out, leading to drainage issues and poor performance. If you notice that your dishwasher is not draining properly or if you hear unusual noises during the draining process, it may be necessary to change the drain pump. In this article, we will guide you through the process of changing the drain pump of a dishwasher.

How to Change the Drain Pump of a Dishwasher

1. Safety Precautions

Before you begin replacing the drain pump, ensure that the dishwasher is completely disconnected from its power source. This will prevent any electrical accidents and ensure your safety during the procedure.

2. Locate the Drain Pump

The drain pump is typically located at the bottom of the dishwasher. Consult your dishwasher’s manual or refer to the manufacturer’s instructions to find the specific position of the drain pump.

3. Remove the Old Drain Pump

Follow these steps to remove the old drain pump:

  1. Access the Bottom of the Dishwasher: Depending on the design of your dishwasher, you may need to remove the bottom panel or access the pump from inside the dishwasher.
  2. Disconnect the Power Supply: Carefully disconnect any electrical connections leading to the drain pump. Take note of the wire placement or take a photo for reference when connecting the new pump.
  3. Disconnect the Drain Hose: Locate the drain hose connected to the pump and carefully detach it. Be prepared for some water to spill out, so have a towel or bucket ready to catch any excess water.
  4. Remove the Mounting Screws or Clamps: The drain pump is usually secured in place with mounting screws or clamps. Use a screwdriver or pliers to remove these fasteners and detach the pump from the dishwasher.
  5. Take Out the Old Pump: Gently pull out the old drain pump from its position, ensuring that you do not damage any surrounding components.

4. Install the New Drain Pump

Follow these steps to install the new drain pump:

  1. Position the New Pump: Place the new drain pump in the same position as the old one, aligning it with the mounting holes or clamps.
  2. Secure the Pump: Use the appropriate mounting screws or clamps to secure the new drain pump in place. Ensure it is tightly fastened but be careful not to overtighten.
  3. Reconnect the Drain Hose: Attach the drain hose to the new pump, ensuring a secure connection. Use clamps or hose connectors to fasten the hose to the pump.
  4. Reconnect the Power Supply: Reconnect the electrical connections to the corresponding terminals on the new drain pump, ensuring they are properly aligned and securely attached.

5. Test the New Drain Pump

With the new drain pump installed, it’s time to test its functionality:

  1. Reconnect the Dishwasher: Plug in or restore the power supply to the dishwasher.
  2. Run a Test Cycle: Start a dishwasher cycle and monitor the draining process. Ensure that the new drain pump effectively removes the water from the dishwasher.
  3. Check for Leaks: During the test cycle, closely inspect the area around the new pump for any signs of leaks. If you notice any leaks, turn off the dishwasher and check the connections to ensure they are properly sealed.

How to Change the Drain Pump of a Dishwasher

6. Reassemble the Dishwasher

Once you have confirmed that the new drain pump is working correctly, reassemble the dishwasher by replacing the bottom panel or closing any access panels that were opened during the installation process.

By following these steps, you can successfully change the drain pump of your dishwasher, resolving drainage issues and restoring proper functionality. Remember to consult your dishwasher’s manual or refer to the manufacturer’s instructions for any specific guidelines or recommendations. If you are unsure about replacing the drain pump yourself or encounter any difficulties during the process, it is recommended to seek the assistance of a professional appliance technician. They have the expertise and tools necessary to safely and effectively replace the pump.