1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Fasco D906 5.6-Inch Condenser Fan Motor. Please read these instructions thoroughly before proceeding with installation or use.
The Fasco D906 is a 1/5 HP, 208-230 Volt, 1075 RPM, single-speed motor designed for condenser fan applications. It features a totally enclosed design, reversible rotation capability, and sleeve bearings.
2. Safety Information
WARNING: Risk of electric shock. Disconnect power before servicing.
- Always ensure power is disconnected at the circuit breaker or fuse box before attempting any installation, maintenance, or repair.
- Installation and wiring should be performed by a qualified electrician or HVAC technician in accordance with all local and national electrical codes.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Ensure proper grounding of the motor to prevent electrical hazards.
- Do not operate the motor if it is damaged or if any components are missing.
3. Product Overview
The Fasco D906 motor is engineered for reliable performance in demanding condenser fan applications. Key features include:
- Horsepower: 1/5 HP
- Voltage: 208-230 Volts
- Speed: 1075 RPM (1 Speed)
- Amperage: 1.2 Amps
- Enclosure: Totally Enclosed
- Rotation: Reversible
- Bearings: Sleeve Bearing
- Shaft Size: 1/2-Inch x 6-1/2-Inch
- Mounting: 4 drilled and tapped holes in the shell, all angle mount bearings.
Figure 1: Fasco D906 5.6-Inch Condenser Fan Motor. This image shows the motor with its shaft extending, ready for fan blade attachment. The motor casing is visible, indicating its totally enclosed design.
4. Specifications
| Specification | Value |
|---|---|
| Brand | Fasco |
| Model | D906 |
| Horsepower (HP) | 1/5 HP (0.2 hp) |
| Voltage | 208-230 Volts (Note: Some specifications list 120 volts, but product title and description confirm 208-230V for this model) |
| Speed | 1075 RPM |
| Amperage | 1.2 Amps |
| Shaft Dimensions | 1/2-Inch x 6-1/2-Inch |
| Enclosure Type | Totally Enclosed |
| Bearing Type | Sleeve Bearing |
| Rotation | Reversible |
| Ambient Temperature Rating | 60 Degree Celsius |
| Item Weight | 4 pounds |
| Material Type | Copper |
| UPC | 663001029670 |
5. Setup and Installation
Follow these steps for proper installation of the Fasco D906 motor:
- Disconnect Power: Ensure all power to the unit is disconnected at the main electrical panel before beginning installation.
- Remove Old Motor: Carefully remove the existing motor, noting its mounting orientation and wiring connections. Detach the fan blade from the old motor shaft.
- Mounting: The D906 motor features 4 drilled and tapped holes in its shell for mounting. Secure the motor using appropriate fasteners. The motor is designed for all-angle mounting.
- Fan Blade Attachment: Attach the fan blade to the 1/2-inch x 6-1/2-inch motor shaft. Ensure the blade is securely fastened and balanced to prevent vibration.
- Wiring: Refer to the wiring diagram provided on the motor label for correct connections. This motor requires a 5mfd/370V capacitor (not included). Connect the motor wires to the power supply and capacitor as indicated. Ensure all connections are secure and insulated.
- Rotation Direction: The motor has reversible rotation. If the fan blade is spinning in the wrong direction after initial power-up, consult the wiring diagram on the motor label for instructions on how to reverse the rotation. This typically involves swapping specific wire connections.
- Final Checks: Before restoring power, double-check all connections, mounting, and ensure no tools or debris are left inside the unit.
6. Operation
Once properly installed and wired, the Fasco D906 motor will operate at a single speed of 1075 RPM. It is designed for continuous duty within its specified voltage and temperature ratings.
- Initial Start-up: After installation, restore power and observe the motor's operation. Listen for unusual noises or excessive vibration.
- Fan Blade Rotation: Verify that the fan blade is rotating in the correct direction for your application. If not, refer to the "Rotation Direction" step in the Setup and Installation section to adjust.
- Temperature: The motor is rated for a 60-degree Celsius ambient temperature. Ensure the operating environment does not exceed this limit to prevent overheating.
7. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your Fasco D906 motor.
- Cleaning: Periodically inspect the motor and fan blade for dirt, dust, and debris accumulation. Clean as necessary to prevent overheating and maintain efficiency. Ensure power is disconnected before cleaning.
- Bearings: This motor uses sleeve bearings. These are typically pre-lubricated and sealed for life, requiring no additional lubrication under normal operating conditions. If unusual noises or excessive friction are observed, the motor may require professional inspection.
- Vibration Check: Regularly check for excessive vibration, which can indicate an unbalanced fan blade, loose mounting, or bearing issues. Address any vibration promptly.
- Wiring Inspection: Annually inspect all electrical connections for tightness and signs of wear or corrosion.
8. Troubleshooting
This section addresses common issues you might encounter with the Fasco D906 motor.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start or hums but does not spin. | No power; faulty capacitor; incorrect wiring; seized bearings; obstruction. | Check power supply and circuit breaker. Verify capacitor is correctly sized (5mfd/370V) and functional. Review wiring diagram. Check for obstructions around the shaft or fan blade. If bearings are seized, motor replacement may be necessary. |
| Motor runs hot. | Insufficient airflow; excessive load; high ambient temperature; incorrect voltage. | Ensure fan blades are clean and unobstructed. Verify the motor is not overloaded. Check ambient temperature. Confirm correct voltage supply (208-230V). |
| Excessive noise or vibration. | Unbalanced fan blade; loose mounting; worn bearings. | Inspect fan blade for damage or imbalance. Tighten mounting bolts. If bearings are worn, professional service or motor replacement is recommended. |
| Fan blade rotates in the wrong direction. | Incorrect wiring for desired rotation. | Refer to the wiring diagram on the motor label to reverse rotation by swapping appropriate wire connections. Ensure power is disconnected first. |
9. Warranty and Support
According to the product specifications, this Fasco D906 motor is sold with No Warranty. For technical support or further assistance, please contact your distributor or a qualified HVAC professional.