What process aids in the separation of contaminants from hydraulic fluid in a reservoir?

Slow fluid movement is effective in aiding the separation of contaminants from hydraulic fluid in a reservoir because it allows particles suspended in the fluid to settle more easily. When the fluid moves slowly, there is more time for larger contaminants, such as dirt and debris, to drop out of suspension due to gravity. This settling process helps to clarify the hydraulic fluid, as the contaminants accumulate at the bottom of the reservoir rather than remaining mixed in with the fluid.

In contrast, rapid fluid movement can keep contaminants suspended and prevent them from settling, making it harder to achieve a clean hydraulic fluid. Frequent agitation also promotes the mixing of particles in the fluid, counteracting the settling process. High pressure application primarily affects the operational characteristics of hydraulic systems but does not directly assist with contaminant separation in the way that slow movement does. Thus, maintaining a slow flow in the reservoir is a key factor in facilitating the effective removal of contaminants.