Atlas Copco Cooler Kit / Cooler Radiator Service Kit Replacement – 2906100000

Atlas Copco 2906100000 – Cooler Kit / Cooler Radiator Service Kit

The Atlas Copco 2906100000 (2906-1000-00) is a Cooler Kit used for servicing the cooling assembly of applicable Atlas Copco oil-injected screw compressors. Parts references identify the kit specifically as a GA90–110W WUXI Cooler Kit and also as a cooler radiator service kit.

The cooler is a critical heat-exchange component that removes heat generated during compressor operation. In an oil-injected screw compressor, compression generates substantial heat and the injected compressor oil absorbs part of this heat. The cooling system then removes this thermal energy so that the compressor oil and compressed air remain within their required operating temperature ranges.

Working Process:

During normal operation, atmospheric air enters the compressor through the inlet system.

The air is compressed between the rotating screw elements. Compression increases both the pressure and temperature of the air.

Compressor oil is injected into the compression element. The oil performs several functions, including lubrication, sealing internal clearances and absorbing heat generated during compression.

The hot oil/air mixture then moves through the compressor’s separation and cooling circuit.

The cooler removes heat from the applicable operating medium. Cooling air passes across the cooler’s heat-transfer surfaces, carrying thermal energy away from the compressor system.

As heat is removed, the operating temperature decreases.

The cooled oil is returned to the compressor circuit, while the compressed-air stream continues through the applicable air-treatment and delivery system.

This continuous cooling process helps maintain stable compressor temperatures and reliable operation.

Main Functions:

• Provides a replacement/service cooler assembly.
• Removes heat generated during compressor operation.
• Helps control compressor oil temperature.
• Supports stable compressed-air temperature.
• Helps prevent excessive thermal loading.
• Supports efficient compressor operation.
• Helps protect internal compressor components.
• Maintains reliable heat transfer.
• Helps reduce the risk of overheating and unexpected shutdown.

Application Information:

Part Number: 2906100000
Alternative Number: 2906-1000-00 / 2906 1000 00
Description: Cooler Kit / Cooler Radiator Service Kit
Application Reference: GA90–110W WUXI
Brand: Atlas Copco

The available parts references specifically identify 2906100000 as a GA90–110W WUXI COOLER KIT.

Cooler Operating Cycle:

1. Air Intake: Atmospheric air enters the compressor.
2. Compression: The screw element compresses the air.
3. Heat Generation: Compression creates heat.
4. Oil Injection: Oil lubricates, seals and absorbs compression heat.
5. Hot Circuit Flow: Heated operating media flows toward the cooler.
6. Cooler Entry: Hot medium enters the cooler.
7. Heat Transfer: Thermal energy moves through the cooler’s heat-transfer surfaces.
8. Heat Rejection: Cooling air carries heat away from the cooler.
9. Temperature Reduction: The operating temperature decreases.
10. Return/Delivery: Cooled oil and conditioned compressed air continue through their respective circuits.
11. Continuous Cycle: The cooling process continues while the compressor operates.

Importance of the Cooler:

The cooler must efficiently remove heat because excessive compressor temperature can negatively affect oil quality, lubrication, sealing and overall equipment reliability.

A cooler with restricted airflow, fouled heat-transfer surfaces or damaged components may not remove sufficient heat.

Possible consequences include:

• High compressor oil temperature.
• Increased discharge temperature.
• Oil degradation.
• Reduced lubrication performance.
• Increased internal component wear.
• Higher energy consumption.
• High-temperature alarms.
• Compressor shutdown.
• Reduced equipment service life.

Heat-Transfer Principle:

The cooler operates using heat exchange.

The hot operating medium flows through its designated passages while cooling air flows across the external heat-transfer surfaces.

The temperature difference between the hot medium and the cooling air drives heat transfer.

As the operating medium travels through the cooler, its temperature progressively decreases.

The effectiveness of this process depends on:

• Cooler cleanliness.
• Airflow.
• Heat-transfer surface condition.
• Operating temperature.
• Cooling-air temperature.
• Internal flow condition.

Maintaining clean and unobstructed cooler surfaces is therefore important for efficient heat rejection.

Possible Failure Conditions:

Cooler performance may deteriorate because of:

• Dust accumulation.
• Dirt and contamination.
• Blocked cooling passages.
• Restricted airflow.
• Bent or damaged fins.
• Corrosion.
• Mechanical damage.
• Oil contamination on heat-transfer surfaces.
• Fan or airflow problems.
• Incorrect installation.

Possible symptoms include:

• High oil temperature.
• High discharge temperature.
• High-temperature alarm.
• Reduced compressor performance.
• Increased energy consumption.
• Excessive fan operation.
• Compressor thermal shutdown.
• Reduced cooling efficiency.

These symptoms can also originate from a faulty fan, thermostat, temperature sensor, restricted airflow or other components, so proper diagnosis is required before replacing the cooler.

Maintenance Procedure:

Before servicing the cooler, shut down the compressor according to the applicable Atlas Copco service procedure.

Isolate the electrical supply.

Depressurize the compressor and allow hot components to cool to a safe working temperature.

Inspect the cooler for:

• Dust and dirt.
• Blocked passages.
• Damaged fins.
• Corrosion.
• Oil contamination.
• Mechanical damage.
• Airflow restrictions.
• Leakage where applicable.

Clean the cooler when the existing assembly remains serviceable.

If the cooler requires replacement, remove the existing cooler carefully without damaging adjacent components or connections.

Install the 2906100000 Cooler Kit in the correct orientation.

Ensure:

• Cooling-air passages are unobstructed.
• Connections are correctly positioned.
• Sealing surfaces are clean.
• Mounting hardware is correctly installed.
• No foreign material remains inside the cooling system.
• All connections are tightened according to the applicable Atlas Copco service procedure.

After installation, inspect the complete assembly.

Restart the compressor according to the normal operating procedure.

Allow the compressor to reach normal operating conditions.

Monitor:

• Compressor oil temperature.
• Discharge temperature.
• Cooling airflow.
• Fan operation.
• Pressure.
• Abnormal noise.
• Temperature alarms.
• Overall compressor performance.

Service Benefits:

Using the Atlas Copco 2906100000 Cooler Kit during appropriate maintenance helps:

• Restore cooling performance.
• Improve heat rejection.
• Maintain proper oil temperature.
• Reduce thermal stress.
• Protect compressor components.
• Support efficient compressor operation.
• Reduce the risk of overheating.
• Improve equipment reliability.
• Reduce unexpected downtime.

Technical Summary:

Part Number: 2906100000
Alternative Number: 2906-1000-00
Brand: Atlas Copco
Description: Cooler Kit / Cooler Radiator Service Kit
Application Reference: GA90–110W WUXI
Component Type: Compressor cooling assembly/service kit
Primary Function: Heat removal from the compressor cooling circuit
Operating Function: Transfers heat from the hot compressor operating medium to cooling air
Main Benefit: Maintains suitable operating temperature and supports reliable compressor performance.

Disclaimer: All manufacturer names, trademarks, model numbers, and part numbers are used solely for identification and compatibility purposes. Our products are high-quality aftermarket replacement products and are not manufactured, sponsored, endorsed, or authorized by the original equipment manufacturer (OEM). All trademarks remain the property of their respective owners.