First let's talk about the continuous drip system. You might not know that this system creates a higher water bill and it also restricts the cooling capacity of the cooler. The second system, the automatic power cleaning system, is also supposed to prevent mineral buildup produce bacteria growth, and improve efficiency. This system also increases your water bill, does very little to prevent mineral build-up, and decreases the cooling efficiency of your cooler. Let me take a moment to briefly explain the workings of an evaporative cooler.
Water sitsin the bottom of the cooler which is called the pan.
A cooler pumps water through tubes to the top of thee cooler where the water is distributed over the pads. Air is then brought in across the pads from the outside. Heat is pulled from the air by the water going through the pads, and 2. The water in the pan becomes cooler each time it circulates and drops back down. At the same time, heat is being pulled from the water in the pan.