Customer Requirement
A commercial HVAC OEM requires a new condenser unit design with an AC axial fan. An airflow capacity of 8,755 m³/h at 60Hz was the core requirement from the OEM customer. They have previewed LONGWELL’s product catalog and selected the LWAA4E550S-5MEB-02 model as their solution. Their target market is North America, so it is necessary to indicate CE, RoHS, and REACH compliance in the technical documents. Now they request that LONGWELL provide a technical specification sheet as the verification document for their internal engineering and compliance team.
Engineering Solution
Although the customer requested documentation for the LWAA4E550S-5MEB-02 model, LONGWELL’s process involves confirming the selection is optimal for the stated application. The primary decision point was the choice between an AC motor and a modern EC motor. An AC fan was confirmed as the correct path. The OEM’s system architecture used a direct 220 VAC line feed for the fan, and introducing an EC fan would have required adding a 0-10V/PWM control signal line and a higher initial unit cost, providing no benefit for this fixed-speed, high-airflow application.
Therefore, the LWAA4E550S-5MEB-02 was validated as the correct choice from the standard series. The axial fan is made from cold-rolled steel, which can provide the necessary rigidity for high-speed rotation at 1450 RPM. For outdoor condensers, the operating temperature from -30°C to +60°C is suitable for components operating in extreme temperatures. Maintenance-free deep groove ball bearings ensure it meets the 30,000-hour L10 life expectancy under continuous S1 duty, a critical reliability factor for the OEM.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | LWAA4E550S-5MEB-02 |
| Nominal Voltage | 220 VAC |
| Frequency | 60 Hz |
| Voltage Range | 198 ~ 242 VAC |
| Max Airflow | 8755 m³/h / 5150 CFM |
| Speed | 1450 RPM |
| Power Input | 550 W |
| Current | 2.5 A |
| Noise Level (LpA) | 74 dB(A) |
| Capacitor | 12μF |
| Insulation Class | Class F |
| Protection Type | IP44 |
| Max Ambient Temperature | +60 °C |
| Min Ambient Temperature | -30 °C |
| Impeller Diameter | Ø550 mm |
| Overall Diameter (with guard) | Ø577 ±3 mm |
| Depth | 100 ±1 mm |
| Life Expectancy (L10) | 30,000 Hours |
| Work System | S1 (Continuous) |
| Bearing | Ball Bearing |
| Certifications | CE, RoHS, REACH |
The combination of 8,755 m³/h airflow and a 550 W power input at 60 Hz makes this fan ideal for high-volume air movement in condenser units or ventilation systems.
Technical Documentation
The complete technical specification sheet contains performance data, dimensional drawings, and certification details.
Download PDF: LWAA4E550S-5MEB-02 Specification Sheet
The product catalogue for the LWAA-550 series assists procurement managers in selecting the correct model.
Why does LONGWELL support HVAC OEMs?
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The product catalogue for the LWAA-550 series helps the customer compare available models and select a suitable configuration for their HVAC equipment.
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LONGWELL works with HVAC OEM customers from the early stage of a project through to production. Our engineering team can support fan selection, product design, CFD analysis, sample development and testing before the project moves into regular production.
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The P-Q curves and technical figures provided for the LWAA series are based on fan performance testing of ISO 5801 and AMCA 210-16. Engineers can use these data when calculating airflow, pressure requirements, and system operating points.
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For applications where a standard fan does not fit the equipment directly, modifications can be discussed with LONGWELL’s engineering team. Common changes include the mounting structure, cable length, connector type, terminal coating, product label, and blade or frame material. These options allow the fan to be adapted more closely to different HVAC requirements.
Explore our full AC Axial Fans range.
Frequently Asked Questions
Q: What kind of bearing does the LWAA4E550S-5MEB-02 axial fan use?
A: The LWAA4E550S-5MEB-02 axial fan uses maintenance-free deep groove ball bearings, providing reliable long-term operation with a rated L10 life of 30,000 hours under standard test conditions.
Q: Can the LWAA4E550S-5MEB-02 model operate on a 50Hz power supply?
A: No. The LWAA4E550S-5MEB-02 model can only operate under the conditions of 60Hz and 220V. Running at a frequency of 50Hz will cause the motor to run significantly slower, resulting in the airflow being far below the rated 8,755 m³/h. For the 50Hz application requirements, you can select the standard LWAA4E550-5MEB-06 model from the same series.
Q: What is the IP rating of this axial fan?
A: This fan has an IP44 rating. This makes this axial fan suitable for installation in outdoor condenser units where it may be exposed to moisture or spray, but not direct water jets or submersion.
Technical Documentation & Resources
Have a Similar Fan Requirement?
Longwell’s engineering team delivers custom spec sheets and samples within 90 days. Since 1990, we have supplied EC fans and blowers to OEMs across HVAC, cold chain, data center, and industrial applications worldwide.
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🏆 ISO 9001 / ISO 14001 / ISO 45001 | CE (TÜV) | UL/ETL | ATEX Zone 21/22 | AMCA 210-16 / ISO 5801 tested
Project Item: 7058366948-LWAA4E550S-5MEB-02
Project Date: 2026-07-27 00:50:04
