Page 15 - National Poultry Newspaper

What’s all that gunk on my cool cell pads?
per day. Cover sumps and filter housings to prevent algae growth. Consider installing an awning or roof to shade the system.
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ALLOWING mineral deposits and algae to ac- cumulate on evaporative pads will eventually clog the pad openings, caus- ing a restriction of airflow into a building or shed.
cause filters to plug. Re- move several sections of pad and check the trough covers. Some trough cov- ers have only minimum drainage holes, which al- low dirt and sand to ac- cumulate.
24-hour timer.
3. Limit nutrient content.
chemicals may damage the media and metal com- ponents.
When water evaporates, pure water is released, leav- ing behind mineral depos- its on the cool cell pads.
4.Flush the filters. In- stall a ball valve on the filter clean-out, making it easy to remove trapped sediment. The screen ele- ment should be cleaned often and replaced every six to 12 months.
Only use chemical treat- ments approved for use with evaporative cooling systems.
While the periodical use of descalers and al- gaecides may be helpful, there is no substitute for proper water flow and regular flushing of the system.
The single best way to prevent the accumulation of mineral deposits is proper water distribution.
Bleach and many pool
2. Dry the pads. Allow the pads to dry complete- ly once every 24 hours, as algae cannot live on a dry surface. If the system is not shutting down dur- ing the evening, it may be necessary to install a
Water from deep wells or municipal systems is pre- ferred over surface wa- ter. Water from ponds or shallow wells is typically higher in nutrients.
Don’t rely on chemicals to maintain an evapora- tive pad system.
Steady water flow over the pad surface flushes away minerals left by evaporation.
5. Flush don’t bleed. While ‘bleeding-off’ is better than nothing, a much better practice is to dump all the water from the trough and replenish it with fresh water. The complete dumping helps to flush the contaminants out of the cool cell pads. How often the trough needs to be drained de- pends on the hardness of the water and how often the evaporative system operates. Monitoring the pH level is a useful meth- od to determine when to change the water, with readings above 8.5 indi- cating an excessive min- eral build-up.
In a system that is oper- ating correctly, you should see a steady trickle of wa- ter down the outside of the pads with no visible dry streaks.
1. Start with clean pads. Remove dirt and other debris from the pads us- ing a soft brush and low- pressure hose end sprayer. To remove heavy deposits of mineral and scale, use a chemical cleaner. Avoid using high-pressure spray- ers and harsh chemicals containing bleach that can damage the pad media.
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2.Clean the spray bar. At the beginning of eve- ry season, open the ball valve on the pipe end, turn the pump on and flush water out the end. It is a good idea to mechanically scrub the inside of the pipe with a bottlebrush at- tached to a long PVC pipe. An inexpensive clean-out brush is also available with a slip coupling that glues directly to a 3/4” PVC pipe. Run the brush through the pipe and turn the pump on to flush the system a second time.
6. Check the pump size. Often evaporative sys- tems are extended without changing to a higher litre- per-minute pump. Dry ar- eas showing up at the end opposite the pump usu- ally means an undersized pump.
3. Clean the sump. Flush the trough and sump as dirt and sand quickly
Algae growth can be limited by following a few important management practices.
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National Poultry Newspaper, October 2018 – Page 15
Cool cell pads are the perfect environment for algae growth, providing light, moisture, and nu- trients.
1. Limit sunlight. Al- gae growth requires only a few hours of sunlight
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