Atlas Copco GA90/160W Oil Cooler Kit Replacement – 2906010100

The 2906010100 Oil Cooler Kit is used for servicing the oil-cooling system of applicable Atlas Copco GA90/160W water-cooled compressors. Its purpose is to maintain effective cooling of the compressor oil, which absorbs heat generated during the compression process.

During compressor operation, oil circulates through the compression system for cooling, sealing and lubrication. The heated oil then passes through the oil cooler, where heat is transferred from the oil to the cooling water. The cooled oil is returned to the compressor circuit to continue the cooling and lubrication process.

Working Process

1. Compression – Air is compressed by the compressor element, generating heat.
2. Oil Circulation – Compressor oil circulates through the compression system.
3. Heat Absorption – The circulating oil absorbs heat from the compressor element and other hot components.
4. Hot Oil Flow – Heated oil flows toward the oil cooler.
5. Cooling Water Flow – Cooling water passes through the opposite side of the oil cooler.
6. Heat Transfer – Heat transfers from the hot compressor oil to the cooling water.
7. Oil Temperature Reduction – The oil temperature is reduced to the required operating range.
8. Return to Compressor – The cooled oil returns to the compressor circuit.
9. Continuous Cycle – The oil continuously circulates through this cooling loop during compressor operation.

Main Functions

• Cools compressor oil.
• Removes heat generated during compression.
• Maintains proper oil operating temperature.
• Supports effective lubrication.
• Helps maintain compressor-element sealing.
• Reduces thermal stress on compressor components.
• Supports reliable compressor operation.
• Helps prevent excessive oil temperature.

Why Oil Cooling Is Important

Compressor oil performs several important functions:

• Cooling – Removes heat from the compression process.
• Lubrication – Reduces friction in applicable lubricated components.
• Sealing – Helps seal clearances within the compression process.
• Heat transfer – Carries heat away from internal components.

If oil becomes excessively hot, its ability to perform these functions can deteriorate, potentially resulting in higher operating temperatures, reduced efficiency and component wear.

Possible Failure Conditions

The oil cooler system can lose performance due to:

• Internal scaling.
• Restricted cooling-water flow.
• Oil contamination.
• Fouling of heat-transfer surfaces.
• Corrosion.
• Damaged seals.
• Water leakage.
• Oil leakage.
• Excessive operating temperature.

Possible symptoms include:

• High oil temperature.
• High compressor discharge temperature.
• Temperature alarms.
• Compressor thermal shutdown.
• Reduced cooling efficiency.
• Oil leakage.
• Cooling-water leakage.
• Increased compressor energy consumption.

Maintenance Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate the electrical supply.
3. Depressurize the compressor.
4. Allow the oil and cooler to cool.
5. Isolate the cooling-water circuit.
6. Drain the applicable cooling circuit if required.
7. Remove the oil-cooler connections.
8. Inspect the cooler for corrosion, contamination and leakage.
9. Remove old sealing components where applicable.
10. Clean the mating surfaces and cooling passages according to the approved procedure.
11. Install the replacement components from 2906010100.
12. Reconnect the oil and cooling-water circuits.
13. Restore the system.
14. Restart the compressor.
15. Check for oil or water leakage.
16. Monitor oil temperature and compressor operating temperature.

Service Benefits

Using the correct 2906010100 Oil Cooler Kit during appropriate maintenance helps:

• Restore effective oil cooling.
• Maintain correct oil temperature.
• Improve heat-transfer performance.
• Reduce overheating risk.
• Support compressor lubrication and sealing.
• Improve compressor reliability.
• Reduce temperature-related downtime.

Technical Summary

Atlas Copco’s official product page confirms 2906010100 as the GA90/160W Oil Cooler Kit.

Recommended catalog title: Atlas Copco 2906010100 – GA90/160W Water-Cooled Oil Cooler Kit, 2906-0101-00.

Compatibility note: Verify the compressor model and serial number before ordering, because cooler configurations can vary between machine versions.