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 the high-pressure compression element in applicable ZR110–145 oil-free screw compressors. The HP element receives air from the low-pressure stage and further compresses it to the required final pressure.

Working Process

1. Air Intake – Atmospheric air enters the compressor.
2. LP Compression – The low-pressure element performs the first compression stage.
3. Intercooling – The partially compressed air is cooled before entering the HP stage.
4. HP Compression – The high-pressure element further compresses the air.
5. Oil-Free Operation – The compression chamber operates without oil injection.
6. Element Replacement – During overhaul/service, the worn HP element is exchanged using the appropriate kit.
7. Sealing & Alignment – The replacement assembly is correctly positioned and sealed to prevent air leakage.
8. Final Air Delivery – The HP stage supplies compressed air to the aftercooling and outlet system.

Main Functions

• Supports replacement of the HP compressor element.
• Restores high-pressure compression performance.
• Provides required installation/sealing components.
• Helps maintain correct element alignment.
• Helps prevent compressed-air leakage.
• Supports reliable two-stage oil-free compression.
• Helps reduce downtime during major maintenance.

Possible Failure Symptoms

A worn HP element can contribute to:

• Reduced discharge pressure.
• Reduced compressed-air capacity.
• Increased energy consumption.
• Abnormal noise or vibration.
• Increased operating temperature.
• Reduced compressor efficiency.
• Poor overall compressor performance.

Maintenance / Exchange Process

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. Remove the required HP-stage covers and connections.
6. Disconnect and remove the existing HP element.
7. Inspect the housing, shaft and mounting surfaces.
8. Clean the mating surfaces.
9. Install the replacement HP element and applicable components.
10. Replace the required seals/gaskets supplied with the exchange kit.
11. Check shaft alignment and free rotation.
12. Tighten mounting hardware according to Atlas Copco specifications.
13. Reconnect all air and service connections.
14. Restart the compressor.
15. Check for leakage, abnormal vibration and noise.
16. Verify discharge pressure, temperature and compressor performance.

Technical Summary

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

The part-number references consistently identify 2906037100 as the ZR110–145 HP Compressor Element Exchange Kit, paired with 2906037000 as the LP element exchange kit.

Compatibility: Before ordering, verify the machine’s model and serial number. Atlas Copco recommends using the machine serial number in Power Connect to access the machine-specific Spare Parts Book.