The OLF (Offline Filtration) unit from HYDAC is a specialized filtration solution designed to enhance the cleanliness of hydraulic and lubrication fluids in various industrial applications, including wind turbines. This unit operates independently of the main hydraulic system, providing continuous filtration without affecting the system’s primary functions. In 2023, Delta – P Fluid Technologies S.A. collaborated with a Greek energy company for the upgrade of the lubrication system, by supplying twenty-six OLF units that were installed at a wind park located in central Greece.

Key Features of the OLF Unit

• High-Efficiency Filtration

The OLF unit utilizes high-performance filter elements that effectively remove particulate contaminants from hydraulic fluids.Depending on the model, the unit can include multiple filtration stages to achieve higher cleanliness levels.

• Standalone Operation

As an offline filtration unit, it operates separately from the main hydraulic circuit, allowing for continuous fluid purification even when the primary system is not running. By filtering fluid independently, it reduces the contamination load on inline filters and extends their service life.

• Robust Construction

Designed to withstand harsh industrial environments, the OLF unit features robust construction materials and components to ensure longevity and reliable performance.

• User-Friendly Design

The unit is designed for ease of use, with straightforward controls and indicators for monitoring system status and filter condition. Filter elements are easy to replace, minimizing downtime during maintenance operations.

• Integrated Monitoring

Depending on the model, real-time monitoring of fluid condition is available, including contamination and moisture levels.

Specific Benefits for Wind Turbines

• Enhanced Fluid Cleanliness

By maintaining higher fluid cleanliness, the OLF unit helps prevent wear and tear on hydraulic components, leading to increased system reliability. Cleaner fluid reduces the likelihood of component failures and extends the lifespan of critical parts such as pumps, valves, and actuators.

• Reduced Maintenance Costs

With continuous offline filtration, the load on primary filters is reduced, decreasing the frequency of filter replacements and associated maintenance costs. Real-time monitoring allows for predictive maintenance strategies, helping to identify and address potential issues before they lead to system failures.

• Operational Efficiency

Continuous filtration ensures that the hydraulic system remains clean and operational, reducing unplanned downtime for maintenance. Maintaining optimal fluid cleanliness ensures that the hydraulic system performs consistently, which is critical for the efficient operation of wind turbines.