Hog Slat Inc. Newton Grove, NC USA March 2022 43 Evaporative Cooling System Evaporative Cooling Pad Issue Checklist Before contacting a Hog Slat representative, please obtain checklist information 1. Check pad orientation and manufacturing logos. Ensure pads are H2 pads and they have a valid date code printed. If applicable edge guard should be facing away from the house Steeper flutes should also be facing away from the house Most modern pads have an orientation logo on the side for reference 2. Is there evidence of proper pad maintenance? Check for scale, mineral, or debris buildup on inner and outer faces of pad Properly maintained pads will be clear of debris and allow air to pass freely Pads should be cleaned regularly, seasonally for most pads. 3. What is the condition of the system and contents? Check for clogged filters, strainer baskets, and header pipes Check contamination and algae buildup in the trough and water reservoir Properly maintained systems will be mostly clean with little or no build up. 4. Is the system being routinely flushed? Check to see if the system is flushed on a regular schedule. At a minimum the system including reservoir should be completely flushed monthly. Routine flushing of the system helps to clean the pads and eliminate minerals and scale build up from normal operation. 5. What is the water level of the system? Check the water level of the system Ensure there is no standing water around the base of the pads A proper system will have a water level roughly 1” below the pads 6. What is the pH and water quality of the system? Using disposable pH strips check the pH of the system. A correct system pH is between 6 and 8. If the pH is found to be out of range check the pH of the water supply. Visually inspect the water in the system. Properly maintained system water should be clear or slightly cloudy. 7. Have any chemicals been added to the system. Check to see if any chemicals have been used for cleaning or algae control. If chemicals have been used make sure they are approved. Make sure no foreign substances have been introduced to the system. Foreign substances include: Roundup, Bleach, Degreasers 8. Are the pads being allowed to dry? Check on operation schedule of system If possible pads should be allowed to dry completely at least once daily Running the fans for 30 minutes longer than cool cell system aids in drying 1. 2. 3. 4. 5. 6. 7. 8.
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