Genuine Atlas Copco Fan Assembly 1092301331 | Heavy-Duty Compressor Cooling Module

Industrial air compressors generate a massive amount of thermal energy during the compression cycle. To protect internal components and maintain operational efficiency, a reliable, high-performance thermal management system is absolutely vital. The Genuine Atlas Copco Fan Assembly (Part Number: 1092301331) serves as a critical cooling component designed specifically for heavy-duty rotary screw air compressors.

Manufactured to precise engineering standards, this complete fan assembly delivers the high-volume airflow required to stabilize system temperatures under demanding industrial conditions. By opting for a factory-specified original part, facility managers and maintenance engineers ensure seamless mechanical compatibility, optimal energy efficiency, and extended equipment service life. Below is a comprehensive technical breakdown of its physical, electrical, and operational specifications.

What Is Atlas Copco Fan Assembly 1092301331?

The part number 1092301331 does not represent a simple, bare fan blade or a standalone motor. Instead, it denotes a fully integrated, heavy-duty cooling module. This heavy-duty assembly arrives complete with a high-efficiency outer-rotor axial fan motor, aerodynamically balanced fan blades, a robust structural airflow cowl (shroud), and a heavy-gauge protective grille to prevent foreign object debris from entering the system.

In standard compressor configurations, this integrated module is positioned within the main cooling package, typically mounted on the top or upper side panels of the compressor housing. It sits adjacent to the oil cooler and the compressed air aftercooler. During compressor operation, the fan assembly forcefully extracts or pushes ambient air across the radiator fins, rapidly dissipating heat from both the compressor fluid and the discharged compressed air.

Technical Specifications and Performance Data

For engineering verification and procurement review, the verified technical parameters of the fan assembly are consolidated in the reference table below:

Motor Engineering & Electrical Characteristics

The heart of this cooling module features a premium YWF(K)166-6D90-E03 outer-rotor motor, integrated into the system configuration by the industrial engineering specialist mdexx Magnetronic Devices. This motor design provides distinct operational advantages for heavy industrial machinery:

• 6-Pole Low-Speed Configuration: Operating at a nominal speed of 920 rpm, the motor utilizes a 6-pole design to move large volumes of air while maintaining low acoustic noise and minimal structural vibration.
• Industrial-Grade Enclosure: The IP54 rating guarantees that the internal electrical components remain protected against harmful dust accumulation and water sprays from any direction, which is essential for harsh compressor station environments.
• Thermal Resilience: Built with Class F (CL.F) insulation materials, the motor windings can safely withstand continuous operating temperatures up to 155°C, preventing premature winding burnout during high-load summer operations.

Installation, Wiring, and Rotation Verification

To ensure a safe and successful installation, qualified maintenance personnel must adhere closely to the official wiring diagram provided on the motor nameplate. The dual-voltage capability allows configuration for different factory power distribution grids:

1. Star Connection (Y) – For 400V Three-Phase Grids

This is the standard electrical connection for most standard industrial power grids. Technicians must short-circuit the W2, U2, and V2 terminals using the provided jumper links, and then connect the three-phase incoming power lines directly to the U1, V1, and W1 terminals.

2. Delta Connection (Δ) – For 230V Three-Phase Grids

For facility environments utilizing 230V three-phase power, technicians must install the jumper links vertically to connect W2 to U1, U2 to V1, and V2 to W1 respectively, before connecting the incoming power lines to the combined terminals.

3. Lead Wire Identification

• U1: Brown
• V1: Blue
• W1: Black
• W2: Orange
• U2: Red
• V2: Gray
• PE: Green / Yellow (Protective Earth Ground)

4. Critical Direction of Rotation Check

Correct fan rotation is absolutely critical for the safety of the compressor system. Air compressor cooling packages depend heavily on unidirectional airflow. After completing the wiring installation and turning on the power, immediately verify that the blades rotate in the direction indicated by the arrow label on the mdexx housing. If the fan spins in reverse, the cooling efficiency drops dramatically, causing rapid heat accumulation and triggering high-temperature shutdowns. To correct a reverse rotation, disconnect the power supply completely and swap any two of the three incoming power phases.

Applications within Compressor Systems

The 1092301331 fan assembly is engineered primarily as a high-capacity cooling system component for Atlas Copco large-scale rotary screw air compressors. It is commonly found on stationary oil-injected and oil-free air compressors ranging from 55 kW to 90 kW capacities, depending on the specific model variation and climatic package configuration.

In practice, the compressor central processing unit (such as the Elektronikon® controller) monitors real-time discharge air temperatures and oil injection temperatures. The controller regulates the fan operation via system contactors or frequency drives. By drawing air forcefully through the cooler core, this module maintains the compressor lubricating fluid and air lines within the optimal thermal envelope of 75°C to 95°C.

Why Choose Genuine Atlas Copco Spare Parts?

Investing in authentic factory-specified components offers clear long-term operational advantages:

• Exact Drop-in Fitment: With precise physical dimensions of 96 cm x 90 cm and a heavy weight of 93 kg, an exact factory match avoids costly field modifications, frame drilling, or sheet metal alterations during replacement.
• Optimized Aerodynamic Loads: The fan blades match the motor torque profile perfectly, providing the precise static pressure needed to pull air through dense cooler fins without overloading the electrical system.
• Protection Against Catastrophic Downtime: Structural failures or motor burnouts in alternative aftermarket cooling units can cause immediate overheating, halting compressed air production and disrupting downstream manufacturing lines.

FAQ

Q1: Which specific Atlas Copco air compressor models use the 1092301331 fan assembly?

A: This assembly is typically utilized in large-capacity rotary screw compressors, generally between 55 kW and 90 kW ranges. Because exact structural designs vary based on specific machine series, generation, and environmental builds, we strongly advise confirming compatibility by checking your equipment parts manual or consulting our team with your compressor serial number.

Q2: Does this part number include the outer metal framing and shroud?

A: Yes, absolutely. This part number represents a complete cooling module assembly. The total shipment weight is 93 kg, which includes the genuine mdexx outer-rotor motor, calibrated fan blades, a heavy-duty protective safety grille, and the pre-assembled airflow shroud container.

Q3: What causes a compressor to trip on high temperature immediately after a fan replacement?

A: The most frequent cause is incorrect motor wiring leading to reverse rotation. If the fan blades rotate backwards, they cannot generate the necessary static pressure to draw heat away from the oil cooler. Check the rotation indicator arrow on the fan housing; if it is backward, turn off the power and swap any two incoming lines (U1, V1, W1) to reverse the direction.

Q4: Is this motor capable of handling fluctuating facility power grids?

A: The integrated industrial motor is rated for continuous duty with a standard voltage tolerance of ±10%. It supports dual-voltage installation, operating reliably at either 230V three-phase or 400V three-phase industrial grids at a 50 Hz frequency.

Q5: Can this assembly withstand highly humid or dusty foundry environments?

A: Yes. The motor shell carries a verified IP54 protection rating, which stops harmful dust ingress and handles airborne fluid splashes. Additionally, the premium Class F insulation system provides safe operation up to 155°C, ensuring long-term survivability in demanding factory environments.

Conclusion

The Atlas Copco Fan Assembly 1092301331 is a robust, premium cooling module built to protect heavy-duty screw compressors from thermal overload. From its heavy 93 kg integrated structure to its resilient IP54 mdexx motor, every design feature is tailored to withstand challenging industrial environments. Utilizing authentic factory-specified components guarantees steady airflow, optimal power factor performance, and minimized facility downtime.

For product availability, logistics arrangements, or verification for specific compressor models, please submit an inquiry through our secure contact portal or connect directly with our replacement parts technical support specialists.

If you need other fan assembly of Atlas Copco air compressors, we provide more models in the table below or you can submit your requirements to us directly.