Atlas Copco Cooler Kit for the air-cooled version Replacement -2906009900

The Atlas Copco 2906009900 is a Cooler Kit for the air-cooled version of applicable Atlas Copco compressors. Its purpose is to support servicing and maintenance of the compressor cooling system so that heat generated during compression can be effectively removed.

During compressor operation, compression generates significant heat. The cooler transfers this heat away from the compressed air and/or compressor cooling circuit, depending on the specific machine configuration. Maintaining clean and unrestricted cooler surfaces is essential for efficient heat transfer.

For GA90/315 GR applications, references specifically associate this part with cooler cleaning/maintenance.

Working Process

1. Air Compression – Atmospheric air enters the compressor and is compressed.
2. Heat Generation – Compression increases the temperature of the air and compressor components.
3. Hot-Air/Cooling Circuit Flow – The heated medium reaches the cooler.
4. Heat Transfer – Heat is transferred through the cooler’s heat-transfer surfaces.
5. Air Cooling – Ambient air passes through the cooler surfaces and removes heat.
6. Temperature Reduction – The operating temperature is reduced toward the required range.
7. Continuous Cooling – The cooling process continues while the compressor operates.
8. Heat Dissipation – The removed heat is released into the surrounding atmosphere.

Main Functions

• Supports cooling-system maintenance.
• Helps maintain efficient heat transfer.
• Helps remove heat generated during compressor operation.
• Supports proper operating temperature.
• Helps prevent overheating.
• Maintains compressor efficiency.
• Supports reliable compressor operation.
• Helps reduce temperature-related shutdowns.

Cooler Cleaning / Maintenance Function

Because the part is also listed as a GA90/315 GR Cooler Cleaning Kit, it is particularly relevant to maintaining cooler performance.

Over time, cooler surfaces can accumulate:

• Dust
• Dirt
• Oil deposits
• Grease
• Environmental contamination
• Debris

This contamination reduces airflow through the cooler and acts as an insulating layer over the heat-transfer surfaces.

As a result, the cooler becomes less effective and compressor operating temperatures can increase.

Possible Failure / Poor-Cooling Symptoms

A cooler or cooling system with restricted heat transfer may result in:

• High compressor temperature.
• High discharge temperature.
• Temperature alarms.
• Compressor thermal shutdown.
• Reduced compressor efficiency.
• Increased energy consumption.
• Reduced cooler airflow.
• Excessive oil temperature.
• Reduced compressor reliability.

Maintenance Procedure

Before servicing the cooler:

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate the electrical supply.
3. Allow the compressor and cooler to cool.
4. Inspect the cooler for dust, dirt, oil and debris.
5. Check the cooler fins and airflow passages.
6. Clean the cooler using the applicable Atlas Copco-approved cleaning procedure.
7. Avoid bending or damaging the cooler fins.
8. Inspect for corrosion, physical damage and leakage.
9. Check that the cooling fan and airflow path are unobstructed.
10. Reassemble the cooler system correctly.
11. Restart the compressor.
12. Monitor operating temperature and airflow.
13. Confirm that no high-temperature alarm occurs.

Service Benefits

Proper maintenance using the 2906009900 Cooler Kit helps:

• Restore cooler heat-transfer efficiency.
• Maintain proper compressor temperature.
• Improve cooling performance.
• Reduce overheating risk.
• Support energy-efficient operation.
• Increase compressor reliability.
• Reduce temperature-related downtime.

Technical Summary

Recommended catalog title: Atlas Copco 2906009900 – Cooler Kit, Air-Cooled Version / GA90–315 GR Cooler Cleaning Kit, 2906-0099-00.

Compatibility note: The part is associated with different descriptions in aftermarket catalogs, so verify the compressor model, cooling configuration and serial number before ordering. In particular, 2906009900 is the air-cooled cooler kit, while 2906010000 is separately listed as the water-cooled aftercooler kit.