Atlas Copco HP Element Exchange Kit Replacement – 2901186500

Atlas Copco 2901186500 – HP Element Exchange Kit

The Atlas Copco 2901186500 (2901-1865-00) HP Element Exchange Kit is a service and replacement kit designed for compatible ZR/ZT oil-free screw compressors. The kit is used during replacement or overhaul of the high-pressure (HP) compressor element sealing and associated service components.

Atlas Copco officially identifies the part as “HP EL EXCHANGE KIT FOR ZR ZT OIL FREE COMPRESSORS” with a listed weight of 250 g.

Working Process:

In a multi-stage oil-free screw compressor, the HP element receives air from the previous compression stage and further compresses it to the required final pressure.

During compression, the HP element operates under high pressure, temperature, rotational speed and mechanical loading. Proper sealing around the element and its associated components is essential for maintaining compression efficiency and preventing unwanted air leakage.

The 2901186500 HP Element Exchange Kit provides replacement sealing and mechanical service components required during HP element maintenance.

The kit contains multiple O-rings, seals, washers, spring rings and a screw. Atlas Copco’s official parts listing specifies the following components:

• Seal – 2 pcs
• O-ring 10.11 × 2.4 – 1 pc
• Instruction – 1 pc
• Instruction – 1 pc
• O-ring 54.5 × 3 – 1 pc
• O-ring 69.5 × 3 – 1 pc
• Seal – 1 pc
• O-ring 260.2 × 5 – 1 pc
• O-ring 64.5 × 3 – 1 pc
• Washer – 1 pc
• Ring Spring – 2 pcs
• Screw – 1 pc
• O-ring 94.5 × 3 – 1 pc
• O-ring 59.5 × 3 – 1 pc

The O-rings and seals maintain airtight connections between the mating surfaces of the HP element and surrounding compressor components. They prevent compressed air leakage and help maintain the required pressure difference between compressor stages.

The washers and spring rings provide mechanical positioning, retention and sealing support for the applicable assembly.

The screw secures the relevant component during assembly and helps maintain the required mechanical position.

During normal operation, the seals are exposed to pressure fluctuations, temperature changes, vibration and repeated compressor loading cycles. Over time, sealing materials can harden, flatten, crack or lose their elasticity.

A deteriorated seal can cause compressed-air leakage around the HP element. This leakage can reduce compression efficiency, increase energy consumption and affect the compressor’s ability to reach its designed pressure.

Damaged or incorrectly fitted O-rings can also cause leakage between internal passages or external connections.

If sealing performance deteriorates significantly, the compressor may experience abnormal pressure behavior, reduced capacity, increased operating temperature or increased power consumption.

The exchange kit therefore provides the components required to restore the sealing condition of the HP element during scheduled maintenance.

Maintenance Procedure:

Before servicing the HP element, the compressor must be stopped, electrically isolated, completely depressurized and allowed to cool according to the applicable Atlas Copco safety procedure.

The HP element and surrounding components should be inspected for leakage, contamination, damaged sealing surfaces, wear, corrosion and abnormal deposits.

The old sealing components should be removed carefully without scratching or damaging the mating surfaces.

The supplied 2901186500 HP Element Exchange Kit should be used to replace the applicable seals, O-rings, washers, spring rings and retaining hardware.

All sealing surfaces must be clean and free from dirt, old seal material and foreign particles.

Each O-ring must be installed in its correct groove and must not be twisted, cut, stretched excessively or pinched during assembly.

Seals must be installed in the correct orientation and position according to the applicable Atlas Copco service documentation.

The spring rings, washer and screw must be installed correctly to ensure proper mechanical retention.

After assembly, the HP element should be checked for correct positioning and free mechanical movement as applicable.

The compressor should then be reassembled and all connections checked for proper sealing.

After start-up, the compressor should be monitored during unloaded and loaded operation. Pressure, temperature, vibration, leakage and overall operating behavior should be checked.

A correctly serviced HP element should maintain the intended inter-stage and final compression conditions while minimizing air leakage.

Using the Atlas Copco 2901186500 HP Element Exchange Kit during the appropriate maintenance operation helps restore sealing performance, maintain compression efficiency, reduce leakage and support reliable operation of ZR/ZT oil-free compressors.

Part Number: 2901186500
Alternative Number: 2901-1865-00 / 2901 1865 00
Brand: Atlas Copco
Part Description: HP Element Exchange Kit
Official Description: HP EL EXCHANGE KIT FOR ZR ZT OIL FREE COMPRESSORS
Application: Atlas Copco ZR/ZT oil-free compressors
Component Type: HP element service/exchange kit
Official Listed Weight: 250 g
Main Components: O-rings, seals, washers, spring rings, screw and instructions
Primary Function: Restores sealing and service components associated with the HP compressor element
Secondary Function: Prevents compressed-air leakage around the HP element
Operating Function: Maintains airtight sealing during high-pressure compression
Main Benefits: Improved sealing, reduced air leakage, maintained compression efficiency, stable pressure performance 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.