Heating/Piping/Air Conditioning Engineering, Apr. 2014, by June Galloway. (Free registration is required to view full-text of article.)
http://hpac.com/air-conditioning/what-owners-need-know-about-evaporative-cooling-equipment

"Evaporative-cooling equipment is selected to provide a fluid (usually water) to a system at a certain temperature and flow rate. If the temperature of the fluid delivered to a system (chiller) is higher than desired, the system will suffer increased wear and tear and usage. Decreasing leaving-water temperature by just 2°F can lower electricity expenditures by 6 percent.

Routine inspection and maintenance is paramount in achieving desired temperature and flow rate, and it plays an important role in extend operating life
."