EcoWater CHC Series, Руководство по обслуживанию и устранению неисправностей

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Indicators for concern
1. Cycles of concentration are too high or too low: For each installation, there is a recommended
cycles of concentration. This is achieved by properly setting the blow down conductivity point.
If cycles are too high, water quality deteriorates and may exceed the treatment capability,
causing performance problems. If cycles are too low, there will be too much blow down, thus
reduced water saving. Also, cooling water may not get enough CHC treatment at low cycles.
Examples of causes for changes in cycles of concentration: a). Conductivity meter is out of
calibration and not working properly. The Conductivity meter should be cleaned and calibrated
for each visit. b). Changes in evaporation rate due to system load or weather. c). Changes in
makeup water chemistry.
2. Changes in makeup water chemistry: This is usually caused by changes in the source of makeup
water. Well water (ground water) is generally quite stable for each well but could change
significantly from other wells nearby. Surface water changes with seasons. Some cities use a
combination of different water sources for municipal water.
3. Changes in hardness and alkalinity in makeup water will changes the scaling tendency. Changes
in chloride also changes water’s corrosivity. Changes in conductivity (TDS) directly affect
cycles of concentration. Therefore, conductivity set-point may need to be adjusted.
4. Relative calcium concentrations of sump water and makeup: When makeup water chemistry
and cycles of concentration are stable, changes in sump water calcium hardness may indicate
changes in the performance of the CHC system.
5. Significant increase in bacteria population: Often this is caused by contamination. Follow-up
sample is recommended. Survey the system and find out the cause.