Service Run

Definition - What does Service Run mean?

A service run refers to the operating period of a water conditioning cycle that is characterized by the running of raw water through a series of chemical units to purify it.

Hard water can cause serious problems in industrial applications. Some examples include breakdowns in boilers, cooling towers and other equipment that stores or transports water. Wherever water hardness is a concern, softening during a service run is commonly used to reduce the adverse effects of hard water.

Corrosionpedia explains Service Run

Service runs primarily serve to soften water by exchanging "hard" cations for sodium. This causes gradual depletion of exchangeable sodium to the point of minimal impact.

During purification, water is passed downward through the resin fluidized bed, forcing the resin spheres to become tightly packed. The first step of the cycle expands the media by forcing the water upward through the resin fluidized bed. Additional washing cleans the resin of particles, including fine particles trapped in the bed. Ultimately, this process is continued until the desired degree of hardness is achieved.

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