Introduction
This manual provides essential information for the safe and effective use of the Norlake 143690 Evaporator Fan Motor. This component is a genuine OEM replacement part designed for commercial foodservice refrigeration systems. Adhering to the instructions within this document will help ensure the safety, reliability, and optimal performance of your equipment.
Safety Information
WARNING: Improper installation, operation, or maintenance can result in serious injury or property damage. Always follow these safety guidelines:
- Disconnect all power to the equipment before installing, servicing, or cleaning the fan motor.
- Installation and service should only be performed by qualified and authorized personnel.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, during installation and maintenance.
- Ensure all electrical connections are secure and comply with local and national electrical codes.
- Do not operate the motor if it is damaged or if any components are missing.
- Keep hands and loose clothing away from moving parts during operation.
Product Overview
The Norlake 143690 Evaporator Fan Motor is a critical component in commercial refrigeration units, responsible for circulating air over the evaporator coil to facilitate heat exchange and maintain desired temperatures. This motor is designed for durability and efficiency in demanding commercial environments.
Figure 1: Norlake 143690 Evaporator Fan Motor. This image displays the black, cylindrical fan motor with its attached wiring and a small bag of mounting hardware, including screws, nuts, and washers, laid out in front of it. The motor features a threaded shaft protruding from its top surface.
Key features include its robust construction and compatibility as a direct OEM replacement, ensuring seamless integration and performance with Norlake refrigeration systems.
Specifications
| Attribute | Value |
|---|---|
| Model Number | 143690 |
| Brand | Norlake |
| Material | Evaporator (component type) |
| Item Weight | 3.8 Pounds |
| Package Dimensions | 13 x 11 x 7 inches |
| Country of Origin | China |
| UPC | 046843097074 |
| Date First Available | April 7, 2017 |
Setup and Installation
The Norlake 143690 Evaporator Fan Motor is a replacement part. Its installation requires specific technical knowledge and tools. It is strongly recommended that installation be performed by a certified refrigeration technician.
- Preparation: Ensure the refrigeration unit is completely disconnected from its power source. Verify that the replacement motor matches the specifications of the original part.
- Access: Carefully access the evaporator compartment of the refrigeration unit. This may involve removing panels or covers.
- Removal of Old Motor: Disconnect the electrical wiring from the old motor. Note the wiring configuration for correct re-connection. Remove any mounting hardware securing the old motor and carefully detach it.
- Installation of New Motor: Position the new Norlake 143690 motor in the designated location. Secure it using the appropriate mounting hardware (screws, nuts, washers, if applicable, as shown in Figure 1).
- Wiring: Connect the electrical wiring to the new motor, ensuring all connections are tight and correctly matched according to the unit's wiring diagram.
- Reassembly: Reinstall any removed panels or covers.
- Testing: Restore power to the refrigeration unit and test the fan motor's operation. Observe for proper rotation, unusual noises, or vibrations.
Refer to the specific service manual for your refrigeration unit for detailed, model-specific installation procedures.
Operating Instructions
Once properly installed, the Norlake 143690 Evaporator Fan Motor operates automatically as part of the refrigeration system's cooling cycle. Its primary function is to draw air across the evaporator coil, facilitating efficient heat transfer.
- The motor will activate when the refrigeration system calls for cooling and will run continuously or cycle on and off based on the system's control settings and temperature demands.
- Ensure that the fan blade (not included with motor, but attached to the motor shaft) rotates freely and without obstruction.
- Listen for any unusual noises during operation, which could indicate a problem.
No direct user interaction is typically required for the operation of the evaporator fan motor itself, beyond ensuring the overall refrigeration unit is powered and functioning correctly.
Maintenance
Regular maintenance of the refrigeration unit, including the evaporator fan motor, is crucial for longevity and efficient operation. Always disconnect power before performing any maintenance.
- Cleaning: Periodically inspect the fan blade and motor housing for dust, debris, or ice buildup. Clean gently with a soft brush or cloth. Avoid using harsh chemicals or excessive moisture directly on the motor.
- Inspection: Check the motor for any signs of wear, such as loose wiring, corrosion, or physical damage. Ensure mounting hardware remains secure.
- Lubrication: This motor is typically sealed and does not require user lubrication. Refer to the refrigeration unit's service manual for specific lubrication requirements, if any, for associated components.
- Airflow: Ensure that the evaporator coil and surrounding areas are free from obstructions to allow for proper airflow, which is essential for the fan motor's effective operation.
Troubleshooting
If the refrigeration unit is not performing as expected, the evaporator fan motor may be a contributing factor. Always ensure power is disconnected before inspecting components.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan motor not running | No power to unit; faulty wiring; motor failure; control board issue. | Check power supply; inspect wiring connections; test motor for continuity (requires specialized tools); consult a technician for control board diagnosis. |
| Unusual noises (grinding, squealing) | Worn bearings; fan blade obstruction; loose mounting. | Inspect fan blade for obstructions; check mounting hardware for tightness; if bearings are worn, motor replacement is typically required. |
| Reduced airflow | Dirty evaporator coil; fan blade obstruction; motor running slowly. | Clean evaporator coil; remove any fan blade obstructions; if motor is running slowly, it may need replacement. |
| Refrigeration unit not cooling effectively | Fan motor not running or running inefficiently; dirty coil; refrigerant issues. | Verify fan motor operation; clean coils; consult a qualified technician for refrigerant system diagnosis. |
For complex issues or if you are unsure about any troubleshooting steps, contact a qualified refrigeration service technician.
Warranty and Support
As a genuine OEM replacement part, the Norlake 143690 Evaporator Fan Motor is manufactured to high standards. Specific warranty terms are typically provided by the point of purchase or by Norlake directly. Please retain your proof of purchase for any warranty claims.
For technical support, parts inquiries, or service, please contact Norlake customer service or your authorized Norlake dealer. Using genuine Norlake OEM parts ensures compatibility and maintains the integrity of your refrigeration system.
You can often find contact information on the official Norlake website or through your original equipment supplier.
