Atlas Copco LP Element Exchange Kit Replacement – 2906017100

The 2906017100 is an LP (Low-Pressure) Element Exchange Kit used during replacement or servicing of the low-pressure compressor element. The low-pressure element is the first compression stage in applicable multi-stage oil-free compressors.

During operation, atmospheric air enters the LP element and is compressed before being passed to the intercooler and then to the high-pressure compression stage. Proper mounting and sealing of the LP element are essential for maintaining compression efficiency and preventing air leakage.

Working Process

1. Air Intake – Atmospheric air enters the compressor through the inlet system.
2. LP Compression – The air enters the low-pressure element and is compressed.
3. Temperature Increase – Compression increases the air temperature.
4. Intercooling – The compressed air passes through the intercooler before the next compression stage.
5. HP Compression – The cooled air proceeds to the high-pressure element for further compression.
6. Element Mounting – The LP element must remain securely mounted to maintain correct alignment.
7. Sealing – Mounting and sealing components prevent unwanted compressed-air leakage.
8. Continuous Operation – Correct element installation supports stable compression throughout the operating cycle.

Main Functions

• Supports replacement of the LP compressor element.
• Provides the required mounting/service components.
• Maintains correct element positioning and alignment.
• Helps maintain air-tight connections.
• Prevents compressed-air leakage.
• Supports efficient first-stage compression.
• Helps restore compressor performance after element replacement.

Why the LP Element Is Important

The LP element is the first stage of compression in the applicable two-stage compressor arrangement. Its performance directly affects the conditions of air entering the intercooler and subsequent HP stage.

A correctly mounted LP element helps ensure:

• Correct rotor alignment.
• Stable compression.
• Proper air flow.
• Reduced leakage.
• Reliable operation of the following compression stage.

Possible Failure Symptoms

Incorrect mounting, worn components or a deteriorated LP element may result in:

• Reduced compressor capacity.
• Increased operating temperature.
• Increased energy consumption.
• Air leakage.
• Abnormal vibration.
• Abnormal compressor noise.
• Poor compression efficiency.
• Increased load on the following compression stage.

Maintenance / Element Exchange 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 to cool.
5. Disconnect the relevant air and service connections.
6. Remove the existing LP element.
7. Inspect the mounting surfaces and associated components.
8. Clean the mating surfaces.
9. Install the replacement components supplied with 2906017100.
10. Position the new LP element correctly.
11. Check alignment and mounting.
12. Secure the element according to the applicable Atlas Copco torque specifications.
13. Reconnect all air and service connections.
14. Restart the compressor.
15. Check for air leakage.
16. Monitor pressure, temperature, vibration and operating performance.

Service Benefits

Using the 2906017100 LP Element Exchange Kit during the appropriate maintenance operation helps:

• Restore LP compression performance.
• Maintain proper element alignment.
• Reduce compressed-air leakage.
• Support efficient multi-stage compression.
• Improve compressor reliability.
• Reduce vibration and abnormal operating conditions.
• Minimize maintenance-related downtime.

Technical Summary

Recommended catalog title: Atlas Copco 2906017100 – LP Element Exchange Kit / Low-Pressure Element Mounting Kit, 2906-0171-00.

Note: Some parts catalogs describe 2906017100 as “KIT, ELEMENT MOUNTING,” while application-specific listings identify it as an LP Element Exchange Kit. These references correspond to the same part number.

Compatibility should be verified against the compressor model and serial number before ordering.