Customer Requirement
A North American system integrator requested a fan that can provide air movement in workshops and warehouses without installing complex ductwork. The customer restricted this high-volume air circulation project to a 750mm diameter space constraint. Its target is to deliver a substantial volume of air of approximately 290 m³/min. The noise level had to remain below 65 dB(A) to comply with workplace health standards. The customer needed a 110V AC power wall-mounted fan with an oscillating head with a technical drawing for their installation planning. The fan should comply with North American safety standards, specifically UL 507.
Engineering Solution
LONGWELL’s engineering team selected the LWIF series wall-mounted oscillating fan as the solution. The selected LWIF-750U(s)-02 has a 750 mm impeller diameter, which satisfies the customer’s space constraint. The selected 100% pure copper winding AC motor was verified to produce the required 1380 RPM motor speed.
A three-blade design was chosen as the optimal balance between maximizing air volume and maintaining a noise profile of 65 dB(A). The aluminum blade material provides durability and low rotational inertia. The mechanical design of the wall bracket and oscillating gearbox was reviewed to ensure it could withstand the fan’s 30 kg weight and the continuous dynamic stress of operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | LWIF-750U(S)-02 |
| Voltage | 110 V |
| Frequency | 50 / 60 Hz |
| Input Power | 260 W |
| Nominal Speed | 1380 RPM |
| Air Volume | 290 m³/min (17,400 m³/h; 10,240 CFM) |
| Noise Level | 65 dB(A) |
| Impeller Diameter | 750 mm (30 inch) |
| Weight | 30 kg |
| Blades | 3, Aluminum |
| Motor | AC Induction, 3-Speed |
Technical Documentation
LWIF-750U(S)-02 Specification Drawing: This technical drawing provides all critical mechanical dimensions, mounting point details, and electrical specifications required by engineers for site planning and installation.
This product image and specifications table give a quick overview of the LWIF series fans, showing different models and their primary performance parameters.
Why LONGWELL LWIF series for Industrial Air Circulation?
- Flexible Product Configuration: LWIF series fans diameter size ranging from 450mm to 850mm. The voltage can meet the rated requirements of different regions.
- Outstanding Performance: LWIF-750U(S)-02 can generate 290 m³ every minute to meet the customer’s air circulation demand in the warehouse.
- Purpose-designed Installation: The customer can choose whether to install a wall-mounted or a standing LWIF series fan. The oscillating or fixed direction of the fan can also be chosen.
- Proven North American Market Compliance: LONGWELL’s experience, including deployments with top-tier North American BESS integrators, de-risks the procurement and certification process for OEMs and contractors focused on this region.
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Frequently Asked Questions
Q: What is the lead time for a 100-unit order of the LWIF-750U(S)-02 fan for the US market?
A: The lead time for 100 units of standard products like the 110V LWIF-750U(S)-02 is 15-30 days. For tailored products, LONGWELL has a 90NPI process, which transforms new products from demand to mass production in 90 days.
Q: Does the LWIF-750U(S)-02 oscillating fan require a dedicated control panel?
A: No, the fan is designed for simple, direct operation. It includes a built-in 3-speed pull-chain switch and can be wired to any standard 110V AC, 15A fused wall switch. The oscillation function is engaged or disengaged via a mechanical clutch on the motor gearbox.
Q: Is this fan model certified to UL standards for use in commercial buildings in the USA?
A: Yes. LONGWELL maintains active UL 507 and UL 1004-1 certifications for products intended for the North American market. The LWIF-750U(S)-02 is built in compliance with these standards, ensuring it meets the safety and electrical code requirements for commercial and industrial installations in the United States and Canada.
Technical Documentation & Resources
Project Gallery & Technical Drawings
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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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Project Item: 7026520321-LWIF-750U(S)-02
Project Date: 2026-06-24 00:43:15
