Atlas Copco Blow-Off Cooler Kit Replacement – 2910505200

The Atlas Copco 2910505200 is a Blow-Off Cooler Kit used in the compressor cooling system to remove heat from the compressed-air circuit during the blow-off/unloading process. The kit supports proper cooling and helps maintain safe operating temperatures during compressor operation and unloading.

Atlas Copco parts listings identify 2910 5052 00 as “KIT, COOLER BLOW-OFF.”

Working Process

1. Compression – The compressor compresses incoming air, generating heat.
2. Air Cooling – The heated air passes through the relevant cooling circuit.
3. Blow-Off Operation – During unloading/blow-off, air is routed through the blow-off cooling arrangement.
4. Heat Removal – The cooler transfers heat away from the compressed air.
5. Temperature Reduction – Cooling reduces the air temperature before the air is discharged/handled by the downstream system.
6. Sealing – Cooler connections and sealing components maintain an airtight system.
7. Continuous Cycling – The cooler operates as required during compressor loading/unloading cycles.
8. Service – The cooler kit is replaced or serviced when cooling performance or sealing deteriorates.

Main Functions

• Cools air during the blow-off/unloading process.
• Helps control compressed-air temperature.
• Supports proper compressor unloading.
• Helps protect downstream components from excessive temperature.
• Maintains efficient compressor operation.
• Helps prevent leakage around the cooler assembly.

Typical Failure Symptoms

A deteriorated blow-off cooler can result in:

• Excessive air temperature.
• Poor cooling performance.
• Increased compressor temperature.
• Abnormal unloading operation.
• Air leakage around cooler connections.
• Reduced compressor efficiency.

Maintenance Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate the electrical supply.
3. Fully depressurize the compressor.
4. Allow the equipment to cool.
5. Isolate the relevant air/cooling connections.
6. Remove the existing blow-off cooler assembly.
7. Inspect the cooler and mating surfaces.
8. Clean the connection surfaces.
9. Install the replacement 2910505200 kit.
10. Ensure all seals and connections are correctly positioned.
11. Reconnect the piping.
12. Gradually pressurize the system.
13. Check for leakage.
14. Restart the compressor.
15. Verify blow-off operation and temperature.
16. Confirm normal compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2910505200 – ZR-6-52 Blow-Off Cooler Kit, 2910-5052-00.

Note: There are some third-party catalogs that generically label the part as a service/cooler kit, but the Atlas Copco parts-list references and the UCIL equipment specification specifically identify 2910505200 as the Blow-Off Cooler Kit.