1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your CAPTIVE-AIRE DU85HFA- Low Profile Grease Rated Exhaust Fan. This unit is designed for restaurant grease and general ventilation applications, including food trucks, concession trailers, and wall mount installations. Please read this manual thoroughly before installation or operation.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- Always disconnect power before servicing the unit.
- Ensure all electrical connections comply with local codes and national electrical standards.
- Installation should be performed by a qualified professional.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
- Do not operate the fan if any components are damaged or missing.
- This fan is rated for grease applications; however, regular cleaning is essential to prevent grease buildup and fire hazards.
3. Product Overview
3.1 Key Features
- Low Profile High Speed Direct Drive Centrifugal Upblast Exhaust Fan.
- Equipped with variable speed control and a safety disconnect switch.
- Features a 15-3/4 inch wheel.
- Rated for restaurant grease and general ventilation applications.
- UL705, UL762, & ULC-S645 certified.
- Heavy gauge aluminum housing for durability.
- Backward inclined, non-overloading wheel design.
- Includes vibration isolators for reduced noise and wear.
- Quick release latches for easy motor compartment access.
- Comes with a mounting bracket suitable for food trucks, concession trailers, and wall mount applications.
3.2 Components
The CAPTIVE-AIRE DU85HFA- exhaust fan consists of the main fan unit, an integrated motor, a variable speed control, and a safety disconnect switch. The unit is constructed with a heavy-gauge aluminum housing and includes a mounting bracket for various applications.
Figure 1: Main view of the CAPTIVE-AIRE DU85HFA- Low Profile Grease Rated Exhaust Fan, showcasing its aluminum housing, motor compartment, and control box.
4. Specifications
| Brand | CAPTIVE-AIRE |
| Model | DU85HFA- |
| Fan Design | Low Profile High Speed Direct Drive Centrifugal Upblast Exhaust Fan |
| Power Source | Corded Electric |
| Product Dimensions (Overall) | 25"D x 25"W x 25"H |
| Fan Base Dimensions | 24 3/4" x 24 3/4" |
| Recommended Uses | Restaurant grease and general ventilation (Food trucks, concession trailers, wall mount) |
| Wattage | 559.25 watts |
| Air Flow Capacity | 1500-2200 CFM (Cubic Feet Per Minute) |
| Voltage | 115 Volts |
| Motor | 0.75 HP Single Phase Motor |
| Wheel Size | 15-3/4 inches |
| Item Weight | 62 Pounds |
| Indoor/Outdoor Usage | Indoor (Note: Designed for upblast ventilation, commonly used in outdoor-exposed applications like food trucks.) |
| Certifications | UL705, UL762, & ULC-S645 |
| Control Method | Variable Speed Control (App control listed in specifications, consult manufacturer for details) |
| Efficiency | 3.95 CFM/Watt |
Figure 2: Technical diagram illustrating the dimensions and internal components of the CAPTIVE-AIRE DU85HFA- exhaust fan.
5. Installation
Installation of the CAPTIVE-AIRE DU85HFA- exhaust fan requires adherence to all local and national electrical and building codes. It is recommended that installation be performed by a licensed electrician or qualified HVAC technician.
5.1 Mounting
- The fan includes a mounting bracket specifically designed for food trucks, concession trailers, and wall mount applications.
- Ensure the mounting surface is structurally sound and capable of supporting the fan's weight (62 lbs) and operational forces.
- The fan base dimensions are 24 3/4" x 24 3/4". Ensure adequate space for installation and maintenance access.
- Refer to the technical diagram (Figure 2) for detailed mounting dimensions and requirements.
5.2 Electrical Connection
- The fan operates on 115 Volt Single Phase power.
- Connect the fan to a dedicated circuit with appropriate overcurrent protection.
- Ensure proper grounding as per electrical codes.
- The unit includes a safety disconnect switch; ensure it is easily accessible after installation.
- All wiring should be performed by a qualified electrician.
Figure 3: The CAPTIVE-AIRE DU85HFA- exhaust fan installed on a rooftop or food truck, demonstrating its low-profile design and external control box.
6. Operation
The CAPTIVE-AIRE DU85HFA- exhaust fan is designed for straightforward operation.
6.1 Power On/Off
- Locate the safety disconnect switch on the fan unit.
- To power on, switch the disconnect to the "ON" position.
- To power off, switch the disconnect to the "OFF" position. Always turn off the fan using this switch before any maintenance or extended periods of non-use.
6.2 Speed Control
- The fan is equipped with a variable speed control.
- Adjust the control knob or mechanism to achieve the desired exhaust airflow (1500-2200 CFM).
- Start at a lower speed and gradually increase until optimal ventilation is achieved for your specific application.
7. Maintenance
Regular maintenance is crucial for the longevity and efficient operation of your grease-rated exhaust fan. Always disconnect power before performing any maintenance.
7.1 Cleaning
- Due to its grease-rated application, the fan and its components, especially the wheel and housing interior, will accumulate grease.
- Access the motor compartment using the quick release latches.
- Clean the fan wheel, housing, and motor area regularly using appropriate degreasing agents and tools. Frequency of cleaning depends on usage and grease accumulation.
- Ensure all cleaning agents are thoroughly rinsed and the fan is dry before restoring power.
7.2 Inspection
- Periodically inspect the fan for any signs of wear, damage, or loose connections.
- Check vibration isolators for integrity.
- Ensure the motor is free of debris and operating smoothly.
- Verify that the disconnect switch is functioning correctly.
8. Troubleshooting
This section provides solutions to common issues. For problems not listed here, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not start | No power, disconnect switch OFF, tripped circuit breaker, faulty wiring. | Check power supply. Ensure disconnect switch is ON. Reset circuit breaker. Inspect wiring (by qualified personnel). |
| Reduced airflow | Grease buildup on fan wheel/housing, obstruction in ductwork, incorrect speed setting. | Clean fan wheel and housing. Check for obstructions. Adjust speed control to a higher setting. |
| Excessive noise or vibration | Unbalanced fan wheel (due to grease buildup), loose mounting, worn motor bearings, damaged vibration isolators. | Clean fan wheel. Tighten mounting hardware. Inspect motor and vibration isolators. Contact support if issue persists. |
| Motor overheating | Insufficient ventilation around motor, excessive load, faulty motor. | Ensure proper airflow around the motor. Reduce load if possible. Contact technical support for motor inspection. |
9. Warranty and Support
9.1 Warranty Information
The CAPTIVE-AIRE DU85HFA- exhaust fan comes with a one-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims.
9.2 Technical Support
Technical support is available upon purchase for any questions regarding installation, operation, maintenance, or troubleshooting. For assistance, please refer to the contact information provided with your product documentation or visit the official CAPTIVE-AIRE website.
You can also find more information about CAPTIVE-AIRE products and support at the CAPTIVE-AIRE Store on Amazon.
