Atlas Copco ZR110–145 Cooler Kit Replacement – 2906038100

The Atlas Copco 2906038100 is a cooler service kit designed for ZR110–145 stationary oil-free compressors. The cooler removes heat generated during compression, helping maintain the compressor’s operating temperature and reliable performance. The kit contains replacement O-rings, gaskets, seal washers, plugs and other sealing components required during cooler servicing.

Working Process

1. Compression – Air is compressed by the compressor element, producing heat.
2. Heat Transfer – The generated heat is transferred to the applicable cooling circuit.
3. Cooling – The cooler removes heat from the compressor system.
4. Temperature Control – Cooling keeps operating temperatures within the required range.
5. Sealing – O-rings, gaskets and seal washers maintain leak-tight cooler connections.
6. Continuous Operation – The cooler operates continuously with the compressor.
7. Wear and Contamination – Cooler passages and seals can deteriorate over operating hours.
8. Service – The cooler is cleaned/serviced and worn sealing components are replaced using 2906038100.
9. Testing – After reassembly, the system is checked for leakage and correct temperature performance.

Kit Components

Atlas Copco’s official listing includes the following components:

Main Functions

• Supports ZR110–145 cooler servicing.
• Maintains efficient heat transfer.
• Replaces deteriorated sealing components.
• Prevents cooling-circuit leakage.
• Helps maintain correct compressor temperature.
• Supports reliable oil-free compressor operation.

Typical Problems Indicating Cooler Service

• Increased compressor temperature.
• Reduced cooling efficiency.
• Cooling-water leakage.
• Air leakage around cooler connections.
• Contamination or fouling of cooler passages.
• Temperature alarms.
• Reduced compressor performance.

Maintenance Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate and lock out the electrical supply.
3. Fully depressurize the compressor.
4. Allow the equipment to cool.
5. Isolate and drain the applicable cooling circuit.
6. Disconnect the cooler connections.
7. Remove the cooler/service components.
8. Inspect the cooler surfaces and passages.
9. Clean the cooler as required.
10. Replace damaged O-rings, gaskets and seal washers using 2906038100.
11. Install the flange and associated components correctly.
12. Reassemble the cooler.
13. Restore cooling and air connections.
14. Gradually pressurize the system.
15. Check for air/cooling-water leakage.
16. Restart the compressor.
17. Monitor operating temperature and cooling performance.
18. Confirm normal operation.

Technical Summary

Recommended catalog title:
Atlas Copco 2906038100 – ZR110–145 Cooler Kit, 2906-0381-00.

Important distinction: Some third-party catalogs call 2906038100 a “Cooler Cleaning Kit,” while Atlas Copco’s current official Web Shop identifies it as “ZR110-145 Cooler Kit.” For a formal parts database, I recommend using the Atlas Copco official description: “ZR110–145 Cooler Kit.”