Atlas Copco ZR/ZT 110–315 4000H Maintenance Kit Replacement – 2906073900

Atlas Copco 2906073900 – ZR/ZT 110–315 4000H Maintenance Kit

The Atlas Copco 2906073900 (2906-0739-00) is a 4000-hour maintenance kit designed for compatible ZR/ZT 110–315 stationary oil-free compressors.

The kit is intended for scheduled preventive maintenance at approximately 4,000 operating hours or 1 year, helping replace important filtration, sealing and control components before deterioration affects compressor performance. Atlas Copco lists the complete kit weight as approximately 940 g.

Working Process:

During normal operation, the ZR/ZT oil-free compressor operates continuously to produce compressed air without injecting oil into the compression chamber.

Over time, filters, seals, valves and diaphragm components can become contaminated, worn or degraded due to operating hours, temperature changes, pressure fluctuations and normal service conditions.

The 2906073900 maintenance kit provides several replacement components required during the scheduled 4,000-hour service.

During maintenance, the compressor is safely shut down, isolated and depressurized.

The service technician removes the applicable used filters, sealing components, valve and diaphragm components.

The new components supplied in the maintenance kit are installed according to the applicable Atlas Copco maintenance procedure.

Replacing these components helps maintain proper filtration, sealing and control functions.

After the service is completed, the compressor is restarted and checked for correct operation, leakage, pressure performance and abnormal operating conditions.

Official Kit Components:

Atlas Copco’s official catalog lists the following components in the 2906073900 kit:

• Oil Filter Element – 1 pc
• Filter Element – 1 pc
• Seal Washer M32 – 1 pc
• Valve – 1 pc
• Membrane – 1 pc
• Membrane – 1 pc
• Filter – 1 pc
• O-ring 7.3 × 2.4 – 1 pc

The official listed kit weight is 940 g.

A recent DEWA procurement document further identifies the kit as a 4000-hour maintenance kit for ZR145 and lists associated component references including the M32 seal washer, O-ring, oil-filter element, filter, filter element, valve and Z1/Z2 MkII diaphragms.

Main Functions:

• Supports scheduled 4,000-hour compressor maintenance.
• Replaces the oil-filter element.
• Replaces the applicable air/filter elements.
• Restores sealing through new sealing components.
• Replaces the applicable valve.
• Replaces diaphragm components.
• Helps maintain clean and controlled compressor operation.
• Helps prevent contamination-related problems.
• Supports reliable oil-free compressor performance.

Component Functions:

The oil filter element removes contaminants from the compressor’s applicable oil/lubrication circuit, helping protect components and maintain proper fluid cleanliness where fitted.

The filter element captures particulate contamination from the relevant air or service circuit.

The seal washer M32 provides sealing at the applicable threaded connection and helps prevent leakage.

The valve performs its specified control function within the compressor’s service/control circuit and must operate correctly to maintain proper system behavior.

The membranes provide flexible pressure/control action in the applicable compressor control or valve assemblies.

The filter provides additional filtration of the relevant operating medium.

The O-ring 7.3 × 2.4 provides a reliable seal between mating components and helps prevent leakage.

4,000-Hour Maintenance Process:

1. Operating-Hour Check: Confirm that the compressor has reached the scheduled 4,000-hour maintenance interval or the applicable time-based service period.
2. Shutdown: Stop the compressor using the normal shutdown procedure.
3. Isolation: Isolate electrical, pneumatic and other relevant energy sources.
4. Depressurization: Ensure all applicable pressure is safely released.
5. Inspection: Inspect filters, valves, diaphragms, seals and associated components.
6. Filter Replacement: Remove used filter elements and install the replacement elements from the kit.
7. Seal Replacement: Replace applicable sealing washers and O-rings.
8. Valve Replacement: Replace the applicable valve according to the service procedure.
9. Diaphragm Replacement: Replace the applicable membranes/diaphragms.
10. Cleaning: Clean relevant mating surfaces and remove contamination.
11. Reassembly: Reassemble all components correctly.
12. Inspection: Verify correct seating and installation of every replacement component.
13. Leak Check: Check applicable connections and sealing points.
14. Restart: Return the compressor to service according to the manufacturer’s procedure.
15. Performance Check: Verify pressure, temperature, airflow and general operating condition.

Importance of Preventive Maintenance:

Oil-free compressors depend on clean air paths, reliable control components and properly sealed connections.

If filters become blocked or contaminated, airflow resistance can increase and compressor performance may be affected.

A deteriorated O-ring or sealing washer can result in leakage.

A worn valve or degraded diaphragm can affect control-system operation.

Regular replacement of these components at the recommended service interval helps reduce the possibility of unexpected failures and supports consistent compressor performance.

Possible Problems from Delayed Maintenance:

If scheduled maintenance is delayed, components may experience increased wear or contamination.

Possible symptoms include:

• Reduced compressor efficiency.
• Increased pressure drop across filters.
• Air leakage.
• Control instability.
• Valve malfunction.
• Diaphragm deterioration.
• Increased operating temperature.
• Reduced airflow.
• Unstable compressor operation.
• Increased risk of unexpected shutdown.

These symptoms should be diagnosed carefully because similar conditions can originate from other compressor components.

Maintenance Procedure:

Before beginning work, ensure that the compressor is completely stopped, isolated and depressurized.

Inspect the service area for contamination or oil/air leakage.

Remove the applicable used filter elements.

Clean filter housings and mating surfaces.

Install the new filter elements supplied with 2906073900.

Replace the M32 seal washer and O-ring where specified.

Replace the applicable valve and membrane/diaphragm components.

Ensure that all components are correctly oriented and seated.

Check that:

• Filter elements are correctly installed.
• O-rings are not twisted or damaged.
• Seal washers are correctly positioned.
• Valves move correctly.
• Membranes/diaphragms are correctly seated.
• Connections are properly secured.
• No foreign material remains inside the serviced assembly.

After reassembly, perform the applicable leak and functional checks.

Restart the compressor and allow it to reach normal operating conditions.

Monitor:

• Discharge pressure
• Discharge temperature
• Airflow
• Filter differential condition where applicable
• Valve/control operation
• Leakage
• Abnormal noise
• Overall compressor stability

A correctly completed 4,000-hour service helps maintain the reliability and efficiency of the ZR/ZT compressor.

Service Benefits:

Using the genuine Atlas Copco 2906073900 maintenance kit during the scheduled service helps:

• Maintain filtration performance.
• Restore sealing performance.
• Maintain valve/control functionality.
• Replace aging diaphragm components.
• Reduce contamination-related problems.
• Reduce leakage risk.
• Support reliable compressor operation.
• Extend service life between major maintenance activities.

Part Number: 2906073900
Alternative Number: 2906-0739-00 / 2906 0739 00
Brand: Atlas Copco
Official Description: ZR/ZT 110–315 4000H Maintenance Kit
Application: ZR/ZT 110–315 stationary oil-free compressors
Service Interval: 4,000 operating hours / 1 year
Official Listed Weight: 940 g
Kit Type: Preventive maintenance/service kit
Primary Function: Replacement of filtration, sealing and control components during scheduled maintenance
Main Components: Oil filter element, filter element, seal washer, valve, membranes, filter and O-ring
Main Benefits: Maintained filtration, sealing and control performance, reduced leakage/contamination risk and improved compressor reliability.

Disclaimer: All manufacturer names, trademarks, model numbers, and part numbers are used solely for identification and compatibility purposes. Our products are high-quality aftermarket replacement products and are not manufactured, sponsored, endorsed, or authorized by the original equipment manufacturer (OEM). All trademarks remain the property of their respective owners.