Description
| Model | CFM | dB(A) | Motor HP | Volts | Phase | Full Load Amps | Hz | NEMA Frame | RPM | Type | Circuit | Thermal OL | Bearing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AOVH-35 | 5921 | 89 | 3 | 208-230/460 | 3 | 9.0-8.6 / 4.3 | 60 | 182T | 1725 | TEFC | D | No | Ball |
Explosion-Proof Motor Options
Explosion-proof motors (Class I Group D; Class II Groups F & G) are available for hazardous industrial environments. Always confirm the final electrical ratings on the motor nameplate.
Frequently Asked Questions
AOVH-35 Fan-Driven Air-Oil Cooler
▶️ Question: What types of hydraulic systems typically require the cooling capacity of the AOVH-35?
Answer: The AOVH-35 is designed for heavy-duty hydraulic and lubrication systems that generate high, continuous heat loads. It is commonly used in steel and metal processing machinery, large hydraulic presses, marine systems, automated manufacturing equipment, industrial gearboxes, and high-horsepower lubrication circuits. If your system experiences chronic overheating or operates long hours under heavy load, the AOVH-35 provides the high-capacity cooling needed to stabilize oil temperature.
▶️ Question: What are the benefits of choosing the AOVHR-35-2 two-pass version?
Answer: The AOVHR-35-2 offers improved thermal performance by routing oil through the core twice, increasing heat-transfer efficiency without changing the footprint. Its built-in relief bypass valve protects the system by preventing excessive backpressure during cold starts or when using heavier oils. With a typical flow range of about 6–80 GPM, it’s ideal for demanding hydraulic and lubrication circuits requiring precise, reliable cooling under varying load conditions.
▶️ Question: What should I know about installing the AOVH-35?
Answer: Because of its large size (approx. 315 lb) and high airflow volume, the AOVH-35 must be mounted on a strong, stable horizontal surface. Maintain clear airflow to and from the finned core and leave space around the fan and motor for service access. Oil should enter the lower port and exit the upper port. Use flexible hoses to minimize vibration, and ensure the cooler is installed in a return line or dedicated cooling circuit with clean, well-filtered oil.
▶️ Question: What electrical requirements and noise levels should I expect from the AOVH-35?
Answer: The AOVH-35 uses a 3 HP TEFC fan motor, typically rated for 208–230/460 V, three-phase, 60 Hz service. With a 1725 RPM fan, it provides very high airflow and operates at approximately 89 dB(A). Ensure your facility has appropriate three-phase power and that wiring, overloads, and circuit protection are sized according to the motor nameplate.
▶️ Question: How do I maintain long-term performance on a cooler of this size?
Answer: Regular maintenance includes keeping the fins free of dust and debris, periodically inspecting electrical connections, checking the fan guard and mounting hardware, and following the motor's lubrication schedule if applicable. Ensure system oil is well-filtered to prevent fouling of the copper tubes. Monitoring temperature trends over time can help detect changes in cooling system performance before they impact equipment operation.
