What type of contamination comes into the hydraulic system from the outside?

Ingressed contamination refers to the unwanted materials that enter a hydraulic system from the outside environment. This can include dirt, dust, moisture, and other particulates that can compromise the integrity and performance of the hydraulic system.

The presence of ingressed contamination is significant because it can lead to various issues, such as accelerated wear of components, reduced efficiency, and even system failures if not managed properly. Understanding this type of contamination is crucial for millwrights and maintenance personnel, as it emphasizes the importance of sealing and protecting hydraulic systems from external sources of contamination.

On the other hand, built-in contamination generally arises from the manufacturing processes of the components, often related to residual materials from production. Generated contamination is typically associated with the breakdown of hydraulic fluids or degradation of components during operation, which occurs internally rather than from external sources. Wear-related contamination results from normal use and wear of components in the hydraulic system, but again, it is not introduced from outside. Thus, recognizing ingressed contamination as a unique type is essential for effective hydraulic system maintenance and integrity management.