Atlas Copco Element Mounting Kit C90 Replacement – 2901201900

The Atlas Copco 2901201900 is an element mounting service kit used during installation or replacement of a C90 compressor element. It provides the necessary O-rings, key and installation instructions required to correctly mount and seal the compressor element.

Working Process

1. Air Intake – Atmospheric air enters the compressor.
2. Compression – The C90 compressor element compresses the incoming air.
3. Mechanical Drive – The motor transfers rotational power to the element through the drive shaft.
4. Element Mounting – The compressor element must be accurately positioned and secured to the drive assembly.
5. Sealing – O-rings supplied in 2901201900 seal the element connections and prevent air/oil leakage.
6. Keying – The supplied parallel key secures the mechanical drive connection.
7. Reassembly – The element is mounted and connected according to the installation instructions.
8. Testing – After installation, the compressor is checked for leakage, vibration, temperature and correct performance.

Kit Components

Parts documentation identifies the kit as containing:

Main Functions

• Supports C90 compressor-element installation.
• Provides replacement O-rings for proper sealing.
• Provides the required drive key.
• Helps prevent compressed-air/oil leakage.
• Ensures correct element mounting.
• Supports reliable compressor operation after element replacement.

Typical Reasons for Using the Kit

The kit is normally used during:

• Compressor element replacement.
• Major compressor overhaul.
• Element removal and reinstallation.
• Scheduled service.
• Repair following element wear or failure.

Maintenance / Installation 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 existing compressor element.
6. Inspect the shaft, coupling, mounting surfaces and connections.
7. Clean the mating surfaces.
8. Replace the old O-rings with the components supplied in 2901201900.
9. Install the supplied parallel key.
10. Position the replacement C90 element correctly.
11. Secure the element according to the applicable Atlas Copco specifications.
12. Reconnect the associated air/oil connections.
13. Check that all O-rings are properly seated.
14. Restart the compressor.
15. Check for leakage, abnormal vibration and noise.
16. Verify normal compressor pressure and temperature.

Technical Summary

Recommended catalog title:
Atlas Copco 2901201900 – C90 Element Mounting Kit, 2901-2019-00.

The part number is also independently listed as “ELEMENT MOUNTING KIT – C90” in a Chicago Pneumatic/Atlas Copco parts document, with the same part number and component structure.

Compatibility: Confirm the exact compressor model and serial number before ordering, since C90 element configurations can vary.