Atlas Copco Element Mounting Kit GA11+-30 Replacement – 2901195700

Atlas Copco 2901195700 – Element Mounting Kit GA11+-30

The 2901195700 is an Element Mounting Kit used for servicing and mounting the compressor element in applicable Atlas Copco GA11+ to GA30 oil-injected screw compressors. The kit provides replacement O-rings and gasket components required to maintain proper sealing around the compressor element and its associated connections.

Working Process:

During compressor operation, the screw element compresses incoming atmospheric air while compressor oil circulates through the compression and cooling system. The element and its connections operate under pressure, temperature and vibration.

The mounting interfaces must remain properly sealed. The 2901195700 Element Mounting Kit replaces worn sealing components when the compressor element is removed or serviced.

During installation, the old O-rings and gasket are removed and the mating surfaces are cleaned. New seals from the kit are fitted at their specified locations. Once the compressor element is correctly mounted and the connections are tightened, the seals prevent oil and compressed air from escaping.

This maintains the integrity of the compressor element assembly and supports reliable compressor operation.

Main Functions

• Provides replacement sealing components for compressor-element mounting.
• Restores sealing around element connections.
• Helps prevent oil leakage.
• Helps prevent compressed-air leakage.
• Maintains pressure integrity.
• Supports correct element installation.
• Helps reduce maintenance-related leakage.
• Supports reliable compressor performance.

Part Information

Atlas Copco’s official parts catalog lists the kit as KIT ELEMENT MOUNTING GA11+-30.

Kit Components

Atlas Copco lists the following components:

• O-Ring 264 × 3 – 1 pc
• Gasket – 1 pc
• O-Ring 12.3 × 2.4 – 1 pc
• O-Ring 11.3 × 2.4 – 2 pcs
• O-Ring 49.5 × 3 – 1 pc
• O-Ring 64.6 × 2.4 – 1 pc
• O-Ring 19.2 × 3 – 1 pc
• O-Ring – 1 pc

Element Mounting Working Cycle

1. Element Positioning: The compressor element is positioned in its mounting location.
2. Surface Preparation: Mating surfaces are cleaned and inspected.
3. Seal Installation: New O-rings and gasket from the kit are installed.
4. Element Mounting: The element is correctly aligned and secured.
5. Connection Sealing: The seals close the interfaces between the element and connected components.
6. Compression: The screw element compresses incoming air.
7. Oil Circulation: Compressor oil circulates through the element.
8. Pressure Containment: O-rings and gasket prevent unwanted oil or air leakage.
9. Continuous Operation: The assembly remains sealed during pressure, temperature and vibration cycles.

Role of the O-Rings

The O-rings provide sealing between the different mating components of the element assembly. They prevent fluid or air from passing through unintended clearance between components.

O-rings can deteriorate due to:

• High temperature
• Oil exposure
• Pressure cycling
• Vibration
• Ageing
• Compression set
• Incorrect installation
• Contamination

A damaged O-ring can result in oil or air leakage.

Role of the Gasket

The gasket provides sealing between applicable flat mating surfaces. When the element is secured, the gasket is compressed between the surfaces to prevent leakage.

A gasket should generally be replaced after disassembly rather than reused because compression set or surface deformation can reduce sealing performance.

Possible Failure Conditions

The element mounting seals may fail because of:

• Hardened O-rings.
• Cracked O-rings.
• Damaged gasket.
• Reuse of old seals.
• Incorrect seal installation.
• Twisted or pinched O-rings.
• Damaged sealing surfaces.
• Incorrect tightening.
• Compressor vibration.
• Excessive temperature.

Possible symptoms include:

• Oil leakage around the compressor element.
• Compressed-air leakage.
• Pressure loss.
• Oil contamination around joints.
• Increased compressor running time.
• Increased energy consumption.
• Reduced compressor efficiency.
• Unstable compressor operation.

Maintenance Procedure

Before servicing the compressor element:

1. Shut down the compressor according to the applicable Atlas Copco procedure.
2. Isolate the electrical supply.
3. Depressurize the compressor.
4. Allow hot components and oil to cool.
5. Remove the relevant element connections.
6. Remove the old O-rings and gasket.
7. Inspect the element and sealing surfaces.
8. Clean the mating surfaces.
9. Install the new seals from 2901195700.
10. Ensure O-rings are correctly seated and are not twisted or pinched.
11. Correctly position the gasket.
12. Reinstall and align the compressor element.
13. Tighten connections according to the applicable Atlas Copco service procedure.
14. Restart the compressor.
15. Check for oil or air leakage.
16. Monitor pressure, temperature and vibration.

Service Benefits

Using the 2901195700 Element Mounting Kit during appropriate maintenance helps:

• Restore reliable element sealing.
• Prevent oil and air leakage.
• Maintain compressor pressure integrity.
• Support correct element installation.
• Improve compressor reliability.
• Reduce energy losses caused by leakage.
• Reduce maintenance-related downtime.

Technical Summary

Part Number: 2901195700
Alternative: 2901-1957-00
Brand: Atlas Copco
Description: Kit Element Mounting GA11+-30
Application: Oil-injected screw compressor
Compatible Range: GA11+–GA30
Weight: 30 g
Kit Type: Compressor-element mounting/sealing kit
Primary Function: Provides O-rings and gasket required for secure and leak-tight element installation
Main Benefit: Reliable sealing, reduced leakage and dependable compressor operation.

Recommended catalog title: Atlas Copco 2901195700 – Kit Element Mounting GA11+-30 for Oil-Injected Screw Compressor, 2901-1957-00.

Compatibility note: Confirm the compressor model and serial number in the applicable Atlas Copco Parts Book before ordering, since exact application can vary by compressor configuration.