On May 9, 2026, LONGWELL received a technical requirement for a 350mm AC axial fan designed for water chiller applications. The specification called for a flat guard grille and dual-speed operation, including a low-speed setting of 1050 rpm. The application required two voltage options: a 220V configuration for sample evaluation and a 110V version designated for volume production.
Water Chiller Fan Requirements
To meet the mounting and operational constraints of the chiller unit, LONGWELL engineered fan options based on the LWAA4E350S motor assembly platform. By May 19, 2026, LONGWELL completed the technical drawings and specifications for two distinct part numbers: LWAA4E350S-5MCW-41-46 (220V) and LWAA4E350S-5MCW-42-46 (115V).
Technical Specifications and Model Comparison
Both model variants feature a flat guard grille layout and dual-speed performance capability suited for condenser or chiller heat exchange.
| Parameter / Feature | LWAA4E350S-5MCW-41-46 | LWAA4E350S-5MCW-42-46 |
|---|---|---|
| Nominal Voltage | 220 VAC | 115 VAC |
| Frequency | 50 Hz | 50 Hz |
| Rated Speed | 1050 / 1380 rpm | 1050 / 1500 rpm |
| Current Rating | 0.6 A | 0.6 A |
| Power Input | 110 / 180 W | 110 / 180 W |
| Maximum Airflow | 2575 m³/h (1515 CFM) | 2730 m³/h (1606 CFM) |
| Capacitor | 6 µF | 16 µF |
| Guard Grille Outer Diameter | 422 mm | 422 mm |
| Fan / Shroud Depth | 105 mm / 135 mm total | 105 mm / 135 mm total |
| Cable Length | 1.5 m | 1.5 m |
| Insulation / Protection Class | Class F / IP44 | Class F / IP44 |
The units are specified with deep groove ball bearings, cold-rolled steel impellers, thermal protection tripping at 150–160 °C, and suction airflow direction across the motor.
Project Deliverables
The output of this project phase is the completed engineering drawing and engineering specification sheets for LWAA4E350S-5MCW-41-46 and LWAA4E350S-5MCW-42-46 to enable form, fit, and electrical compatibility evaluations.
Request custom specifications
If you are specifying AC axial fans for chillers or industrial HVAC systems, contact our engineering team to evaluate airflow performance, voltage requirements, mounting configurations, and guard grille options. You can submit your duty point, voltage control specifications, and mounting dimensions directly via our Contact Form or explore standard fan models using the LONGWELL Fan Selector Tool.
Choose the right ac axial fan
Longwell manufactures 218 ac axial fans in-house. Send airflow, static pressure and voltage — an engineer replies with a matching model, performance curve and price within one working day.
