Atlas Copco HP Compressor Element Exchange Kit Replacement – 2906037100

The Atlas Copco 2906037100 is an HP (High-Pressure) Compressor Element Exchange Kit used when replacing or servicing the high-pressure compressor element in applicable ZR110–145 oil-free compressors. Parts references specifically identify 2906037100 as the ZR110–145 HP Element Exchange Kit.

The HP element is the second compression stage in the two-stage oil-free compression process. It receives pre-compressed air from the LP stage and raises it to the required final pressure.

Working Process

1. Air Intake – Atmospheric air enters the compressor.
2. LP Compression – The low-pressure element initially compresses the air.
3. Intercooling – The air is cooled before entering the high-pressure stage.
4. HP Compression – The HP compressor element further compresses the air to the required pressure.
5. Oil-Free Compression – The compression chamber operates without oil contamination.
6. Element Exchange – During major service, the worn HP element is replaced using the exchange kit.
7. Sealing & Alignment – Replacement sealing components ensure proper installation and prevent air leakage.
8. Final Air Delivery – The HP stage delivers compressed air toward the aftercooler and outlet system.

Main Functions

• Supports replacement of the HP compressor element.
• Provides required sealing components for installation.
• Helps maintain correct element alignment.
• Prevents compressed-air leakage.
• Restores compression performance.
• Supports reliable two-stage oil-free compression.
• Helps extend compressor service life.

Possible Failure Symptoms

A worn HP compressor element may cause:

• Reduced discharge pressure.
• Reduced air output.
• Increased energy consumption.
• Abnormal noise.
• Increased vibration.
• High operating temperature.
• Reduced compressor efficiency.
• Compressor performance alarms.

Element Exchange 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 compressor to cool.
5. Remove the required covers and HP-stage connections.
6. Disconnect the existing HP compressor element.
7. Remove the old element and sealing components.
8. Inspect the housing, shaft and mounting surfaces.
9. Clean all mating surfaces.
10. Install the replacement HP element and components supplied with 2906037100.
11. Correctly position all sealing components.
12. Verify shaft alignment and free rotation.
13. Tighten mounting hardware according to the applicable Atlas Copco specifications.
14. Reconnect air and service connections.
15. Restart the compressor.
16. Check for leakage, abnormal vibration and noise.
17. Verify discharge pressure, temperature and overall compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2906037100 – ZR110–145 HP Compressor Element Exchange Kit, 2906-0371-00.

A parts reference confirms the pairing: 2906037000 = LP Element Exchange Kit and 2906037100 = HP Element Exchange Kit for the ZR110–145 range.

Compatibility note: Atlas Copco recommends checking the machine serial number in Power Connect to access the machine-specific Spare Parts Book before ordering.