Removing the fan blade on a DELLA mini split air conditioning unit can be a straightforward task, but it requires attention to detail and a methodical approach. This comprehensive guide will walk you through the step-by-step process, providing expert-level insights and technical specifics to ensure a successful fan blade removal and reassembly.
Accessing the Indoor Unit
- Locate the Front Cover Screws: The first step is to remove the front cover of the indoor unit. Identify the screws, typically located at the bottom of the unit, and use the appropriate screwdriver to unscrew them.
- Carefully Remove the Front Cover: Once the screws are loosened, gently pull the front cover away from the unit, taking care not to damage any of the components.
Lowering the Drain Pan
- Identify the Drain Pan: The drain pan is typically located at the bottom of the indoor unit, responsible for collecting any condensation during the cooling process.
- Detach the Drain Pan: The drain pan is not physically attached to the unit; instead, it is held in place by tabs on the bottom, left, right, and middle. Carefully lift or remove the drain pan to gain better access to the blower wheel and its surrounding parts.
Loosening the Set Screw
- Locate the Set Screw: The set screw that holds the blower wheel onto the blower motor is typically found on the far right side of the blower wheel.
- Spin the Blower Wheel: Rotate the blower wheel until you find an opening where you can insert your screwdriver to access the set screw.
- Loosen the Set Screw: Using the appropriate screwdriver, loosen the set screw by turning it counterclockwise. This will allow you to remove the blower wheel from the motor shaft.
Removing the Evaporator Coil Screws
- Identify the Evaporator Coil Screws: On the left side of the evaporator coil, you will find three screws that need to be removed.
- Remove the Screws: Using the appropriate screwdriver, remove the three screws on the left side of the evaporator coil.
- Lift the Evaporator Coil: Once the screws are removed, you can carefully lift the evaporator coil out towards you, exposing the blower wheel.
- Extract the Blower Wheel: Gently grab the blower wheel and pull it out, taking care not to lose the bearing located on the left side.
Cleaning the Fan Blade
- Avoid Chemicals: When cleaning the fan blade, it’s best to avoid using harsh chemicals. Instead, stick to good old-fashioned water for a thorough cleaning.
- Preserve the Bearing: Be mindful of the bearing located on the left side of the blower wheel. Try not to lose or damage this component during the cleaning process.
- Inspect the Set Screw: Examine the set screw that holds the blower wheel to the blower motor. Note that this set screw does not have a dedicated spot or flat spot on the blower motor, which can simplify the reassembly process.
Reassembling the Unit
To reassemble the DELLA mini split, simply reverse the steps you took to remove the blower wheel:
- Replace the Blower Wheel: Carefully insert the blower wheel back into its original position, ensuring the bearing is properly aligned.
- Secure the Evaporator Coil: Lower the evaporator coil back into its original position and secure it with the three screws on the left side.
- Reinstall the Drain Pan: Carefully place the drain pan back into its original position, aligning the tabs on the bottom, left, right, and middle.
- Reattach the Front Cover: Align the front cover with the indoor unit and secure it with the screws at the bottom.
By following these detailed instructions, you can successfully remove and clean the fan blade on your DELLA mini split air conditioning unit, ensuring optimal performance and efficiency.