Atlas Copco LP Compressor Element Exchange Kit Replacement – 2906037000

The Atlas Copco 2906037000 is an LP (Low-Pressure) Compressor Element Exchange Kit designed for servicing applicable ZR110–145 oil-free compressors. The compressor element is the main compression assembly where the air is compressed without oil entering the compression chamber. Atlas Copco officially identifies this part as the ZR110–145 LP Element Exchange Kit.

The kit provides replacement sealing and mounting components needed when exchanging the LP compressor element, helping restore proper sealing, alignment and reliable compressor operation.

Working Process

1. Air Intake – Atmospheric air enters the low-pressure compressor element.
2. Rotor Compression – The internal screw rotors compress the air.
3. Oil-Free Compression – The compression process operates without oil being injected into the air-compression chamber.
4. Element Exchange – When the existing element reaches its service limit, it is replaced using the exchange kit.
5. Sealing – O-rings, gaskets and sealing washers provide leak-tight connections.
6. Alignment – Correct installation maintains the element’s shaft and housing alignment.
7. Air Delivery – The serviced LP element delivers compressed air to the next stage/system.
8. Continuous Operation – The compressor continues its compression cycle during normal operation.

Kit Components

Atlas Copco’s official Web Shop lists the following components for 2906037000:

Main Functions

• Supports replacement of the LP compressor element.
• Provides required sealing components.
• Helps prevent compressed-air leakage.
• Helps maintain correct element installation.
• Supports reliable compressor performance.
• Restores sealing after element replacement.
• Helps maintain the efficiency of the oil-free compression system.

Possible Failure Symptoms

An aged or damaged compressor element or its sealing components may contribute to:

• Reduced compressed-air output.
• Increased vibration.
• Abnormal compressor noise.
• Air leakage.
• Increased operating temperature.
• Reduced compression efficiency.
• Higher energy consumption.
• Compressor performance deterioration.

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 equipment to cool.
5. Remove the required covers and connections.
6. Disconnect the existing LP element.
7. Remove the old element and associated sealing components.
8. Inspect the housing, shaft and mounting surfaces.
9. Clean all mating surfaces.
10. Install the replacement LP element.
11. Replace the O-rings, gasket and sealing washers supplied with 2906037000.
12. Ensure all seals are correctly seated and undamaged.
13. Check shaft alignment and free rotation.
14. Tighten the mounting components according to the applicable Atlas Copco specifications.
15. Reconnect the air and other service connections.
16. Restart the compressor.
17. Check for air leakage, abnormal vibration and noise.
18. Verify normal pressure, temperature and compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2906037000 – ZR110–145 LP Compressor Element Exchange Kit, 2906-0370-00.

Atlas Copco’s official product page confirms the ZR110–145 LP Element Exchange Kit, while its Web Shop lists the kit components and 500 g weight.

Compatibility note: Verify the compressor model and serial number before ordering. Atlas Copco recommends using the machine serial number in Power Connect to access the machine-specific Spare Parts Book.