Greenheck 311338 Motor
The Greenheck 311338 Motor is a high-reliability, 1/4 HP OPAO motor engineered for continuous duty in residential and commercial HVAC applications. Operating at 115V AC and 60Hz, this single-phase motor delivers a nominal speed of 1725 RPM (or 1800 RPM synchronous speed), making it an ideal choice for blower fans, exhaust units, and air handling equipment. Built with a NEMA 48 frame and a rigid base mount, it provides a stable footprint for high-vibration environments. The open power air over (OPAO) enclosure is designed for placement within the air stream, ensuring optimal heat dissipation during operation. As an OEM Greenheck replacement part, this model simplifies maintenance by ensuring direct drop-in compatibility with existing fan and ventilator motors. This 13.65 lb unit features corrosion-resistant construction and automatic thermal overload protection to prevent winding failure during voltage fluctuations or airflow blockages, maintaining consistent HVAC motor efficiency across industrial configurations.
Key Benefits
- OEM Compatibility: Precision-matched for Greenheck HVAC systems, reducing field modification time for contractors.
- Thermal Overload Protection: Equipped with auto-reset thermal protection to safeguard the 115v 1/4hp motor from overheating.
- Efficient Heat Dissipation: The OPAO enclosure leverages system airflow for cooling, maximizing the unit's operational life in demanding ducts.
- Rigid Base Mounting: Ensures a secure fit in NEMA 48 frame applications, minimizing noise and mechanical wear from vibration.
- Performance Reliability: Consistent 1725 RPM output provides the static pressure required for effective ventilation and air movement.
Common Questions
What does the OPAO enclosure type signify for installation?
An Open Power Air Over (OPAO) motor requires the airflow from the fan it is driving to cool its internals. It should only be installed in applications where it is positioned directly in the air stream.
Is the 311338 motor compatible with variable speed controllers?
This is a standard 115V single-phase motor designed for constant speed operation. For variable frequency or speed control, verify that your controller is compatible with single-phase induction motors with thermal protection.
Can this motor replace a 1140 RPM or 1075 RPM motor?
No, replacing a lower-speed motor with this 1725 RPM motor will significantly increase the CFM and amp draw, likely overloading the motor or damaging the fan blade. Always match the original RPM on your Greenheck replacement motor.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Greenheck 311338 Motor
The Greenheck 311338 Motor is a high-reliability, 1/4 HP OPAO motor engineered for continuous duty in residential and commercial HVAC applications. Operating at 115V AC and 60Hz, this single-phase motor delivers a nominal speed of 1725 RPM (or 1800 RPM synchronous speed), making it an ideal choice for blower fans, exhaust units, and air handling equipment. Built with a NEMA 48 frame and a rigid base mount, it provides a stable footprint for high-vibration environments. The open power air over (OPAO) enclosure is designed for placement within the air stream, ensuring optimal heat dissipation during operation. As an OEM Greenheck replacement part, this model simplifies maintenance by ensuring direct drop-in compatibility with existing fan and ventilator motors. This 13.65 lb unit features corrosion-resistant construction and automatic thermal overload protection to prevent winding failure during voltage fluctuations or airflow blockages, maintaining consistent HVAC motor efficiency across industrial configurations.
Key Benefits
- OEM Compatibility: Precision-matched for Greenheck HVAC systems, reducing field modification time for contractors.
- Thermal Overload Protection: Equipped with auto-reset thermal protection to safeguard the 115v 1/4hp motor from overheating.
- Efficient Heat Dissipation: The OPAO enclosure leverages system airflow for cooling, maximizing the unit's operational life in demanding ducts.
- Rigid Base Mounting: Ensures a secure fit in NEMA 48 frame applications, minimizing noise and mechanical wear from vibration.
- Performance Reliability: Consistent 1725 RPM output provides the static pressure required for effective ventilation and air movement.
Common Questions
What does the OPAO enclosure type signify for installation?
An Open Power Air Over (OPAO) motor requires the airflow from the fan it is driving to cool its internals. It should only be installed in applications where it is positioned directly in the air stream.
Is the 311338 motor compatible with variable speed controllers?
This is a standard 115V single-phase motor designed for constant speed operation. For variable frequency or speed control, verify that your controller is compatible with single-phase induction motors with thermal protection.
Can this motor replace a 1140 RPM or 1075 RPM motor?
No, replacing a lower-speed motor with this 1725 RPM motor will significantly increase the CFM and amp draw, likely overloading the motor or damaging the fan blade. Always match the original RPM on your Greenheck replacement motor.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Greenheck 311338 Motor is a high-reliability, 1/4 HP OPAO motor engineered for continuous duty in residential and commercial HVAC applications. Operating at 115V AC and 60Hz, this single-phase motor delivers a nominal speed of 1725 RPM (or 1800 RPM synchronous speed), making it an ideal choice for blower fans, exhaust units, and air handling equipment. Built with a NEMA 48 frame and a rigid base mount, it provides a stable footprint for high-vibration environments. The open power air over (OPAO) enclosure is designed for placement within the air stream, ensuring optimal heat dissipation during operation. As an OEM Greenheck replacement part, this model simplifies maintenance by ensuring direct drop-in compatibility with existing fan and ventilator motors. This 13.65 lb unit features corrosion-resistant construction and automatic thermal overload protection to prevent winding failure during voltage fluctuations or airflow blockages, maintaining consistent HVAC motor efficiency across industrial configurations.
Key Benefits
- OEM Compatibility: Precision-matched for Greenheck HVAC systems, reducing field modification time for contractors.
- Thermal Overload Protection: Equipped with auto-reset thermal protection to safeguard the 115v 1/4hp motor from overheating.
- Efficient Heat Dissipation: The OPAO enclosure leverages system airflow for cooling, maximizing the unit's operational life in demanding ducts.
- Rigid Base Mounting: Ensures a secure fit in NEMA 48 frame applications, minimizing noise and mechanical wear from vibration.
- Performance Reliability: Consistent 1725 RPM output provides the static pressure required for effective ventilation and air movement.
Common Questions
What does the OPAO enclosure type signify for installation?
An Open Power Air Over (OPAO) motor requires the airflow from the fan it is driving to cool its internals. It should only be installed in applications where it is positioned directly in the air stream.
Is the 311338 motor compatible with variable speed controllers?
This is a standard 115V single-phase motor designed for constant speed operation. For variable frequency or speed control, verify that your controller is compatible with single-phase induction motors with thermal protection.
Can this motor replace a 1140 RPM or 1075 RPM motor?
No, replacing a lower-speed motor with this 1725 RPM motor will significantly increase the CFM and amp draw, likely overloading the motor or damaging the fan blade. Always match the original RPM on your Greenheck replacement motor.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
