1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel, model 3313107033. This replacement component is designed for use in Dometic/Atwood Duo-Therm RV, camper, and motorhome air conditioning units to ensure efficient air circulation.
The blower wheel features a squirrel cage frame with an 8-inch diameter, a 1/2-inch shaft diameter, and an approximate 2.9-inch width. It is engineered for secure and straightforward installation, aiming to minimize maintenance efforts.
Image 1.1: Front view of the Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel.
2. Safety Information
Before attempting any installation or maintenance, please read and understand all safety precautions. Failure to follow these instructions may result in personal injury or damage to equipment.
- Disconnect Power: Always ensure that the main power supply to the RV air conditioning unit is disconnected before beginning any work. This prevents electrical shock.
- Wear Protective Gear: Use appropriate personal protective equipment, such as gloves and eye protection, during installation and maintenance.
- Consult a Professional: If you are unsure about any step of the installation or encounter difficulties, consult a qualified RV technician.
- Handle with Care: The blower wheel may have sharp edges. Handle it carefully to avoid injury.
3. Installation
This section outlines the general steps for replacing an RV A/C blower wheel. Specific procedures may vary depending on your RV A/C unit's model. Always refer to your RV air conditioner's original service manual for detailed, model-specific instructions.
- Prepare for Installation:
- Ensure the RV's main power supply is turned off and disconnected.
- Gather necessary tools, which may include screwdrivers, wrenches, and a flashlight.
- Access the A/C Unit:
- Carefully remove the cover of your RV's air conditioning unit to expose the internal components, including the blower motor and wheel.
- Remove the Old Blower Wheel:
- Locate the set screw or fastening mechanism that secures the old blower wheel to the motor shaft. Loosen and remove it.
- Gently slide the old blower wheel off the motor shaft. Note its orientation for correct installation of the new wheel.
- Install the New Blower Wheel:
- Align the new Pellethead blower wheel (Model 3313107033) onto the motor shaft. Ensure it is seated correctly and matches the orientation of the original wheel.
- Secure the blower wheel to the motor shaft using the set screw or fastening mechanism. Tighten it firmly but do not overtighten, as this can damage the wheel or shaft.
- Reassemble and Test:
- Replace the A/C unit cover, ensuring all fasteners are secure.
- Restore power to the RV A/C unit.
- Turn on the air conditioner and check for proper operation, including airflow and any unusual noises or vibrations.
Image 3.1: The Pellethead blower wheel, equivalent to Dometic Duo-Therm part number 3313107033.
4. Operation
The Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel functions as an integral part of your RV's air conditioning system. Once correctly installed, it operates automatically in conjunction with the A/C motor to circulate air.
For specific instructions on how to operate your RV's air conditioning unit, including fan speed settings and temperature control, please refer to the user manual provided with your RV or the A/C unit itself.
5. Maintenance
Regular maintenance helps ensure the longevity and efficient performance of your blower wheel and RV A/C system.
- Periodic Inspection: Annually, or more frequently if your RV is used often, inspect the blower wheel for any signs of wear, cracks, or accumulation of dirt and debris.
- Cleaning: If dust or debris has accumulated on the blower wheel blades, carefully clean them using a soft brush or compressed air. Ensure the power to the A/C unit is disconnected before cleaning. Avoid using harsh chemicals that could damage the material.
- Check Mounting: Verify that the blower wheel remains securely fastened to the motor shaft. A loose wheel can cause vibration and noise.
6. Troubleshooting
If you experience issues with your RV A/C unit's airflow or noise, the blower wheel may be a contributing factor. Here are some common issues and troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Reduced Airflow | Accumulation of dirt or debris on blower wheel blades. | Disconnect power, access the blower wheel, and carefully clean the blades. |
| Unusual Noise or Vibration | Loose blower wheel on motor shaft; damaged or unbalanced wheel; debris lodged in wheel. | Disconnect power. Check if the set screw is tight. Inspect the wheel for damage or foreign objects. Replace if damaged. |
| Blower Wheel Not Spinning | Motor failure (not blower wheel); obstruction preventing rotation. | Disconnect power. Check for obstructions. If clear, the issue may be with the blower motor itself, requiring professional diagnosis. |
If troubleshooting steps do not resolve the issue, it is recommended to consult a qualified RV technician.
7. Specifications
Key specifications for the Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel (Model 3313107033):
- Brand: Pellethead
- Model Number: 3313107033
- Equivalent to: Dometic/Atwood Duo-Therm part numbers 3313107033, 3313107.033, 3104887.009, 385002300
- Dimensions (Overall): Approximately 2.87 x 8 x 8 inches (Height x Diameter x Diameter)
- Diameter: 8 inches
- Shaft Diameter: 1/2 inch
- Width: Approximately 2.9 inches
- Item Weight: 6.5 ounces (0.19 Kilograms)
- Color: Black
- UPC: 810004065642
Image 7.1: Top view of the blower wheel, illustrating the shaft connection point.
8. Warranty
The Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel is backed by a 2-year guarantee. This warranty covers defects in materials and workmanship under normal use.
For specific terms, conditions, or to initiate a warranty claim, please retain your proof of purchase and contact Pellethead customer support directly.
9. Support
For technical assistance, installation guidance, or any questions regarding your Pellethead Dometic Atwood Duo-Therm RV A/C Blower Wheel, please contact Pellethead customer support.
You can typically find contact information on the Pellethead official website or through the retailer where the product was purchased.