Introduction
This instruction manual provides essential information for the safe and effective installation, operation, and maintenance of your WEIJIA 89850000 Bath Fan Vent Motor. Please read this manual thoroughly before attempting any installation or maintenance procedures. Retain this manual for future reference.
Product Overview
The WEIJIA 89850000 is a replacement bath fan vent motor designed for compatibility with specific Broan Nutone models, including C-89850 and SP-61K16. This motor is engineered to restore proper ventilation function to your bath fan unit.
- Replacement for Numbers S8985000, C-89850, 89850.
- Single speed operation.
- Motor is reversible for both counter-clockwise (CCW) and clockwise (CW) rotation.
- Factory set to counter-clockwise (CCW) rotation.
- Operates at 120 Volts.
- Achieves 3000 RPM's.
- Current draw of 0.98 Amps.
- Features a 2-prong plug for electrical connection.
- Mounting bolts are spaced 1 7/8 inches apart.
- Shaft dimensions: .2178 inches x 1-7/8 inches, with a flat side.
Figure 1: Front view of the WEIJIA 89850000 Bath Fan Vent Motor, showing the shaft, mounting brackets, electrical wires, and 2-prong plug.
Safety Information
WARNING: Electrical shock hazard. Always disconnect power at the circuit breaker or fuse box before installing, servicing, or cleaning this unit. Failure to do so can result in serious injury or death.
- Ensure all local electrical codes and ordinances are followed.
- If you are unsure about wiring or installation, consult a qualified electrician.
- Wear appropriate personal protective equipment (PPE), such as gloves and eye protection, during installation.
- Inspect the motor for any damage before installation. Do not install a damaged motor.
Setup and Installation
This section outlines the general steps for replacing a bath fan vent motor. Specific fan housing designs may vary, so always refer to your original fan unit's manual if available.
- Disconnect Power: Turn off the power to the bath fan at the main circuit breaker or fuse box. Verify power is off using a voltage tester.
- Access Fan Housing: Remove the fan grille and any light covers. Depending on your fan model, you may need to remove screws or clips to access the motor assembly.
- Disconnect Old Motor: Unplug the old motor's 2-prong connector from the receptacle. Disconnect any ground wires.
- Remove Old Motor: Unscrew the mounting bolts that secure the old motor to the fan housing. Carefully remove the old motor.
- Prepare New Motor: Inspect the new WEIJIA 89850000 motor for any shipping damage. Ensure the shaft and mounting points are clear.
- Install New Motor: Position the new motor in the fan housing, aligning the mounting holes. Secure the motor with the existing mounting bolts. Ensure the 1 7/8" spacing between mounting bolts is correctly utilized.
Figure 2: Side view of the motor, illustrating the shaft and main body.
- Connect Electrical: Plug the new motor's 2-prong connector into the fan housing's receptacle. Connect the green ground wire to the designated ground screw or terminal.
- Verify Rotation (Optional): Before reassembling, you may temporarily restore power to quickly check if the motor spins in the correct direction (typically CCW for exhaust fans). If reversal is needed, consult a qualified technician or the fan unit's specific instructions.
- Reassemble: Reattach the fan grille and any light covers.
- Restore Power: Turn the power back on at the circuit breaker. Test the fan for proper operation.
Figure 3: Angled view highlighting the motor's mounting points and electrical plug.
Figure 4: Close-up of the motor's shaft and the base, showing the mounting screw locations.
Operating Instructions
Once properly installed, the WEIJIA 89850000 Bath Fan Vent Motor operates as a single-speed unit. It is designed to function when power is supplied to the fan unit, typically controlled by a wall switch. The motor is factory-set for counter-clockwise (CCW) rotation, which is standard for most exhaust fan applications.
Maintenance
Regular maintenance helps ensure the longevity and efficient operation of your bath fan motor.
- Power Disconnection: Always disconnect power at the circuit breaker before performing any maintenance.
- Cleaning: Periodically remove the fan grille and clean any dust or debris from the fan blades and motor housing. A soft brush or vacuum cleaner attachment can be used. Avoid using harsh chemicals or excessive moisture directly on the motor.
- Inspection: Annually inspect the motor for any signs of wear, loose connections, or unusual noises during operation. If any issues are detected, disconnect power and investigate further.
- Lubrication: This motor is typically designed to be maintenance-free and does not require lubrication. Refer to your original fan unit's manual for specific lubrication requirements if applicable.
Troubleshooting
Before attempting any troubleshooting, ensure power is disconnected at the circuit breaker.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on | No power to the unit Loose electrical connection Faulty wall switch | Check circuit breaker/fuse Ensure 2-prong plug is fully seated Test or replace wall switch |
| Fan runs slowly or makes unusual noise | Dust/debris on fan blades or motor Motor shaft obstruction Incorrect motor installation | Clean fan blades and motor Inspect for obstructions and remove Verify motor is securely mounted and shaft is free |
| Fan vibrates excessively | Unbalanced fan blade Loose mounting bolts | Clean fan blades to remove debris Tighten mounting bolts |
Specifications
| Feature | Specification |
|---|---|
| Model Number | 89850000 |
| Brand | WEIJIA |
| Compatibility | Broan Nutone C-89850, SP-61K16 |
| Speed | Single Speed |
| Rotation | Reversible (CCW & CW), Factory Set to CCW |
| Voltage | 120 Volts |
| RPM | 3000 RPM |
| Amperage | 0.98 Amps |
| Plug Type | 2-Prong Plug |
| Mounting Bolt Spacing | 1 7/8 inches |
| Shaft Dimensions | .2178 inches x 1-7/8 inches, with Flat |
| Material | Copper |
Contact and Support
For further assistance, technical support, or inquiries regarding this product, please contact the manufacturer or your point of purchase. Always provide the model number (89850000) when seeking support.