Atlas Copco EWD75 Electronic Drainer Valve Service Kit Complete for Screw Air Compressor Industrial Part Model 2901063520

The core components typically included in the maintenance kit

Electromagnetic valve assembly

Comprising the electromagnetic coil, valve core and sealing gasket, it is the core control element of the electronic drainage valve, responsible for receiving electrical signals and controlling the opening and closing of the drainage channel. If the coil burns out or the valve core gets stuck, it will cause the drainage valve to fail to work properly.

Sealing kit

Including O-rings, rubber gaskets, piston seals, etc., it is used to ensure the sealing performance inside the drainage valve, preventing the leakage of compressed air or poor drainage. These components are in contact with water vapor and oil stains for a long time and are prone to aging and failure.

Filter / Filter screen

Used to filter impurities, rust, etc. in the compressed air to prevent them from entering the drainage valve and causing the valve core to get clogged or worn. During maintenance, the filter screen needs to be cleaned or replaced to ensure the water passage is unobstructed.

Drainage valve core / Piston

The key component that controls the opening and closing of the drainage outlet. If it is worn, deformed or stuck, it will cause incomplete drainage or continuous leakage, and regular inspection and replacement are required.

Spring and reset elements

Auxiliary elastic components for the valve core to reset. After long-term use, they may experience reduced elasticity or fracture, affecting the sensitivity of the valve core's opening and closing.

Connection terminals / Connectors

Used to connect the control circuit. If oxidized or loose, it will cause electronic control failure. The maintenance kit usually contains spare terminals or connection posts.

Applicable scenarios and maintenance points

Common fault repair: Suitable for EWD75 drainage valves that have problems such as inability to drain automatically, leakage, or abnormal drainage frequency. By replacing worn components, the function can be restored, which is more economical than replacing the entire drainage valve.

Regular maintenance: It is recommended to perform preventive replacement using the maintenance kit in combination with the maintenance cycle of the air compressor (such as every 3-6 months), especially the sealing components and filter screens. This can reduce sudden failures.

Installation precautions:

Before maintenance, the power supply and air source of the air compressor should be cut off, and the pressure in the pipeline should be released to avoid safety hazards.

When replacing the sealing components, the installation surface should be cleaned to avoid residue of impurities affecting the sealing effect.

When assembling, pay attention to the installation sequence of the components to ensure smooth movement of the valve core without sticking.

After maintenance, test the drainage function and check for leaks or abnormal operation.