Atlas Copco 1613853201 Centrifugal Fan Assembly 230/400V 50Hz

Product Overview

Role in the Compressor Cooling Circuit

The Atlas Copco 1613853201 is a genuine centrifugal fan assembly designed for the cooling systems of Atlas Copco industrial air compressors. During compression, air temperature rises significantly as pressure increases. The 1613853201 addresses this thermal load by drawing ambient air across the compressor cooler fins. This airflow dissipates heat from both the compressed air stream and the circulating lubricant. Without effective cooling, the compressor would trigger high-temperature alarms and shut down to protect internal components.

This fan assembly operates at 230/400V AC and 50Hz. These ratings make it suitable for European, Chinese, and other international markets with 50Hz power grids. Atlas Copco manufactures the 1613853201 in Germany to meet the exact engineering specifications of the compressor models it serves.

Centrifugal Fan Configuration

The 1613853201 uses a centrifugal configuration rather than an axial design. Centrifugal fans draw air in through the center inlet and expel it radially through the scroll housing. This design generates higher static pressure than axial fans of equivalent size. That pressure is essential for forcing air through the dense fin packs of compressor coolers. The impeller blades are aerodynamically profiled and dynamically balanced to minimize vibration during continuous operation.

At 49 kilograms and measuring 850 × 400 × 850 mm, the 1613853201 is a substantial industrial component. Its size and weight reflect the cooling demands of mid-range stationary compressors in the 30–45 kW power class. These machines generate considerable heat during sustained operation and require robust airflow capacity to maintain stable temperatures.

Technical Specifications

Electrical Parameters

The 230/400V rating indicates a standard 3-phase motor with dual voltage capability. At 400V line-to-line in a star connection, the motor draws lower current per phase. At 230V line-to-line in a delta connection, the motor operates at a lower voltage level. Both configurations deliver the same rated power output. The 50Hz frequency rating means this fan assembly suits power grids in Europe, China, and most of Asia. North American 60Hz installations require a different fan assembly with the appropriate frequency rating.

Physical Dimensions and Weight

These dimensions define the mounting envelope within the compressor canopy. The fan housing bolts directly to the cooler frame or canopy structure. Maintenance teams should verify physical fitment against the compressor service manual before ordering. Canopy designs vary across production years. Even within the same model series, the fan specification may differ based on the cooling circuit layout.

Working Principle

Airflow Generation

When the compressor controller energizes the fan motor, the centrifugal impeller rotates at its rated speed. Air enters through the central inlet of the fan housing. The rotating impeller blades accelerate the air outward, imparting both velocity and static pressure. The scroll-shaped housing converts this kinetic energy into useful static pressure. From there, the housing directs the air outward through the discharge outlet toward the cooler fins.

For compressor cooling applications, the discharge airflow travels across the finned surfaces of the oil cooler and air aftercooler. As ambient air passes over the fins, it absorbs heat from the hot oil and compressed air flowing through the internal tubes. The heated air is then expelled from the canopy through ventilation louvers. This continuous heat exchange cycle maintains the oil temperature within the designed operating range.

Temperature Regulation Logic

The compressor controller monitors oil temperature and discharge air temperature using sensors in the cooling circuit. Under normal load conditions, the fan runs continuously to maintain stable operating temperatures. In VSD (Variable Speed Drive) compressor models, the controller may modulate fan speed to match the actual heat load. This modulation reduces energy consumption during periods of low air demand.

If the fan fails or airflow drops below the required threshold, oil temperature rises rapidly. Modern Atlas Copco controllers trigger a warning at a preset threshold. If the temperature continues to climb past the critical limit, the controller initiates a controlled shutdown. This protection sequence prevents damage to the airend, lubricant, and downstream seals.

Failure Symptoms and Replacement Timing

Common Failure Indicators

Several symptoms signal that the 1613853201 fan assembly may need replacement:

• High-temperature alarms: Frequent or persistent oil temperature warnings under normal ambient conditions (below 40°C) indicate reduced cooling capacity.
• Unusual noise: Grinding, scraping, or whining sounds from the fan area suggest bearing wear or impeller contact with the housing.
• Excessive vibration: Visible shaking of the fan housing or surrounding panels points to impeller imbalance, often caused by accumulated dirt or blade damage.
• Fan motor trips: Circuit breaker or thermal overload trips on the fan motor indicate electrical issues within the winding or bearing seizure.
• Visible blade damage: Cracks, chips, or missing material on the impeller blades compromise airflow and can lead to catastrophic imbalance.

Replacement Guidelines

When replacing the 1613853201, several practices ensure a successful installation. First, disconnect all electrical power and follow lock-out/tag-out procedures before beginning any work. The fan motor is a 3-phase electrical component. Only qualified electricians or certified compressor service technicians should perform the replacement.

Second, inspect the mounting bolts and vibration isolators for wear. Damaged isolators transfer vibration to the canopy structure and accelerate bearing failure in the replacement fan. Third, verify the rotation direction after installation. A centrifugal fan running in reverse delivers significantly reduced airflow, even though it may sound normal during operation.

Finally, clean the cooler fins during the fan replacement service. Clogged fins restrict airflow and force the new fan to work harder than necessary. A soft brush or low-pressure compressed air removes accumulated dust and oil residue effectively. This simple step extends the service life of the replacement fan and improves overall cooling efficiency.

Frequently Asked Questions

What compressors use the Atlas Copco 1613853201 fan assembly?

The 1613853201 serves specific Atlas Copco stationary screw compressors in the 30–45 kW power range, including models in the GA30–GA37 and ZT30–ZT45 series. Always verify compatibility using your compressor serial number and the official Atlas Copco parts catalog. Fan specifications vary by canopy design and production year, even within the same model series.

Can I use a 60Hz fan assembly instead of the 50Hz 1613853201?

No. A 60Hz motor runs approximately 20% faster than a 50Hz motor at the same voltage. This speed difference changes the airflow characteristics and increases mechanical load on the impeller and bearings. Running a 50Hz motor on a 60Hz supply also creates an electrical mismatch that can damage the motor winding. Always match the frequency rating to your local power grid.

What does the 230/400V dual voltage rating mean?

This rating refers to a standard 3-phase motor that can operate in two configurations. In a star (Y) connection, the motor runs on a 400V 3-phase supply — the standard industrial voltage in Europe and China. In a delta connection, the motor runs on a 230V 3-phase supply. Both configurations deliver the same rated power. The wiring is set at the motor terminal box during installation.

What are the signs of fan bearing failure?

Early-stage bearing failure often manifests as a high-pitched whine or rumbling sound from the fan motor area. As the bearing degrades, the sound becomes louder and the fan may develop noticeable vibration. Using a vibration analyzer or stethoscope during scheduled maintenance can detect bearing degradation before a complete failure occurs. This allows planned replacement during a maintenance window rather than an emergency shutdown.

How do I verify that the replacement fan is a genuine Atlas Copco part?

Genuine Atlas Copco parts carry the Atlas Copco branding on the packaging and the component itself. Each genuine part has a traceable part number — 1613853201 in this case — verifiable through the Atlas Copco parts portal or an authorized distributor. Using non-genuine cooling fans risks improper fitment, inadequate airflow, and reduced compressor protection that can lead to costly downtime.

Should I replace the fan proactively or wait until it fails?

Waiting until the fan fails completely risks an unplanned compressor shutdown that can halt production. Monitoring vibration levels, bearing temperature, and noise during scheduled maintenance allows you to identify degradation trends early. Planning replacement during a controlled maintenance window is more cost-effective than responding to a sudden failure during peak production hours.

How often should I clean the cooler fins to protect the fan?

Cooler fin cleaning frequency depends on the operating environment. In dusty or humid conditions, inspect and clean the fins monthly. In cleaner industrial environments, a quarterly cleaning schedule is typically sufficient. Regular cleaning reduces the static pressure the fan must overcome, which lowers the motor load and extends bearing life.

If you need other Atlas Copco Fan Parts, we provide more models in the table below or you can submit your requirements to us directly.