LWAA4D450S-5MEB-39-00 AC Axial Fan for Condenser Units

Customer Requirement

An OEM customer developing a commercial air-cooled condenser unit required an axial fan assembly with a free-air airflow of 7,004 m³/h. The requested model was LWAA4D450S-5MEB-39, supplied with a mounting panel for direct installation into the customer’s production.

The axial fan needed to operate at temperature ranges from -30°C to +60°C. It will use 380V/400V, 50Hz three-phase power. The panel size was limited to 575 × 575 mm. It also limits 520 × 520 mm hole spacing and a maximum depth of 85 mm. The client expected all performance data to be verifiable according to ISO 5801 and AMCA 210-16 test protocols. CE certification was mandatory for market access, requiring compliance with standards like EN 60335-1 for electrical safety.

Engineering Solution

The project focused on configuration verification and assembly preparation rather than new product development. LONGWELL engineering team reviewed the requirements and confirmed that LWAA4D450S-5MEB-39 matched the requirement of a 450 mm axial fan impeller.

The fan was integrated with a 575 × 575 mm steel mounting panel and guard grill to meet the customer’s installation requirements. The complete assembly reduced additional fabrication and simplified installation on the customer’s production line. The final configuration, LWAA4D450S-5MKB-39-00, was approved with complete mechanical drawings, electrical specifications, and performance data for direct integration into the condenser unit.

Technical Specifications

The combination of 7,004 m³/h airflow and a robust IP54 rating makes this assembly ideal for outdoor condenser units, ensuring reliable heat rejection across the wide -30°C to +60°C ambient temperature range.

Technical Documentation

LWAA4D450S-5MKB-39-00 Specification Sheet (PDF)

This technical specification sheet provides complete performance data, mechanical drawings, and wiring diagrams for design engineers integrating the LWAA4D450S-5MKB-39 fan.

This product matrix image allows procurement managers to quickly compare the LWAA4D450S-5MEB-39 against other models in the 450mm series with different voltage or performance ratings.

Why OEM Choose LONGWELL Axial Fan for Condenser Units?

• The LWAA4D450S-5MKB-39-00 was selected based on the customer’s requirements for airflow, installation space, and cost control.

• The AC motor configuration provides the required 7,004 m³/h airflow at 1,350 RPM, making it suitable for fixed-airflow condenser applications.

• The fan assembly is supplied with a 575 × 575 mm steel mounting panel and protective guard grill. The pre-assembled structure matches the customer’s installation dimensions and reduces additional assembly work during production.

• The LWAA4D450S-5MKB-39-00 delivers 7,004 m³/h free-air airflow with a noise level below 68 dB(A). The performance data was verified according to AMCA 210-16 and ISO 5801 testing standards.

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Frequently Asked Questions

Q: Is the thermal protector in the motor user-replaceable?

A: No. The thermal protector is installed inside the motor winding during production and is not a replaceable component. It protects the motor from overheating by cutting off power when the winding temperature reaches the protection limit.

Q: Why use an AC motor instead of an EC motor for this condenser application?

A: The client’s condenser unit operates at a fixed airflow requirement, so variable-speed control is not required.

Q: Is the LWAA-450 series available for different power supply requirements?

A: Yes. This series can be configured for different voltage and frequency requirements. The model used in this project is designed for 380V/400V, 50Hz three-phase power. 60Hz versions are available for applications requiring North American specifications.

Project Item: 7052715347-LWAA4D450S-5MEB-39
Project Date: 2026-07-18 05:57:00