Description
Explosion-Proof Motor Options
Explosion-proof motors (Class I Group D; Class II Groups F & G) are available for hazardous locations. Always confirm final ratings on the motor nameplate.
Frequently Asked Questions
AOVH-40 Fan-Driven Air-Oil Cooler
▶️ Question: What types of applications require the high-capacity cooling of the AOVH-40?
Answer: The AOVH-40 is the largest cooler in the AOVH series and is designed for extreme-duty industrial systems that generate very high heat loads. This includes steel and aluminum processing lines, large industrial hydraulic presses, marine propulsion and auxiliary systems, high-horsepower gearboxes, large lubrication circuits, and continuous-duty manufacturing equipment. If your system routinely approaches thermal limits, the AOVH-40 provides the airflow and core surface area needed to maintain safe, reliable operating temperatures.
▶️ Question: When should I choose the AOVHR-40-2 two-pass version over the standard AOVH-40?
Answer: The AOVHR-40-2 should be selected when maximum cooling efficiency and system protection are priorities. The two-pass oil circuit significantly increases heat rejection efficiency, while the integrated relief bypass valve safeguards the hydraulic system from excessive pressure during cold starts or when oil viscosity spikes. With a functional range of approximately 8–80 GPM, the AOVHR-40-2 is ideal for large, high-energy systems with variable load conditions or harsh thermal demands.
▶️ Question: What should I consider when installing an AOVH-40 due to its size and airflow?
Answer: The AOVH-40 weighs approximately 350 lb and moves a very large volume of air, so it must be installed on a strong, stable horizontal platform capable of supporting both weight and operational vibration. Adequate airflow clearance is critical—allow ample space on both sides of the unit and ensure no obstructions prevent intake or exhaust flow. Oil should enter the lower port and exit the upper port, and flexible hoses are recommended to reduce stress on the cooler connections.
▶️ Question: What electrical requirements and noise levels should I expect from the AOVH-40?
Answer: The AOVH-40 uses a 3 HP TEFC fan motor, typically rated for 208–230/460 V, three-phase, 60 Hz operation. It runs at approximately 1725 RPM and produces about 91 dB(A) at full airflow. Because of its power draw, ensure your facility has appropriate three-phase electrical service and that wiring, overload protection, and breakers match the motor nameplate requirements.
▶️ Question: How do I ensure long-term performance from the AOVH-40 in demanding environments?
Answer: Maintain proper oil filtration to prevent debris from entering the cooling core, keep fins clean from dust and contamination, and ensure unrestricted airflow. Regularly inspect mounting hardware, check the fan guard and motor, and follow the lubrication schedule if the motor requires periodic greasing. Monitoring system oil temperatures over time helps identify performance changes or early signs of fouling.
