Atlas Copco Scavenge Line Kit GA75 Replacement -2901161510

The Atlas Copco 2901161510 Scavenge Line Kit is used in the oil-management circuit of applicable GA75 oil-injected rotary screw compressors. The scavenge line returns separated oil from the oil separator system back to the compressor element, allowing the oil to be reused rather than carried out with the compressed air.

Working Process

1. Oil Injection – Oil is injected into the compressor element for cooling, sealing and lubrication.
2. Air/Oil Mixing – During compression, the air becomes mixed with compressor oil.
3. Separation – The compressed air/oil mixture enters the separator system.
4. Oil Separation – Most of the oil is separated from the compressed air.
5. Residual Oil Collection – Small amounts of remaining oil collect in the separator’s appropriate area.
6. Scavenge Line – The scavenge line provides a controlled path for this separated oil to return to the compressor element.
7. Oil Reuse – The recovered oil is returned to the compression circuit.
8. Continuous Cycle – This process continuously recovers oil during compressor operation.

Main Functions

• Returns separated oil to the compressor element.
• Supports continuous oil circulation.
• Helps reduce oil carryover into the compressed-air system.
• Maintains proper compressor lubrication.
• Helps prevent excessive oil accumulation in the separator.
• Supports efficient oil consumption.
• Restores the scavenge circuit during maintenance.

Possible Failure Symptoms

A blocked, damaged or leaking scavenge line can cause:

• Increased oil carryover.
• Excessive oil consumption.
• Oil accumulation in the separator.
• Reduced compressor efficiency.
• High oil level in the wrong part of the system.
• Oil leakage.
• Reduced compressor performance.
• Increased discharge-air oil content.

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 compressor and oil system to cool.
5. Isolate the relevant oil circuit.
6. Remove the existing scavenge-line components.
7. Inspect the line, fittings and connection points for blockage or damage.
8. Clean the mating surfaces.
9. Install the replacement components from 2901161510.
10. Ensure all connections are correctly tightened.
11. Check that the scavenge path is free from obstruction.
12. Restore the oil circuit.
13. Restart the compressor.
14. Check for oil leakage.
15. Verify normal oil return and monitor oil carryover.

Service Benefits

Using the 2901161510 Scavenge Line Kit helps:

• Maintain proper oil recovery.
• Reduce oil carryover.
• Maintain compressor lubrication.
• Support stable compressor operation.
• Reduce oil consumption.
• Protect the compressor element.
• Improve overall compressor reliability.

Technical Summary

Recommended catalog title:
Atlas Copco 2901161510 – Scavenge Line Kit for GA75 Oil-Injected Rotary Screw Compressor, 2901-1615-10.

The part number 2901161510 is consistently identified as “Scavenge Line Kit GA75” in multiple Atlas Copco parts catalogs.

Compatibility note: For exact machine compatibility, verify the compressor serial number through Atlas Copco’s Spare Parts/Power Connect system. Atlas Copco states that the serial number provides access to the machine-specific Spare Parts Book.