Question: how to clean evaporative cooling system?
Answer: Step1 : Remove panels and cooling pads. Unplug the cooler and turn off the water. ...  Step2: Drain water out of the air cooler. Open the drain plug if the portable air cooler has one. ...  Step3: Brush out the inside of the cooler. ...  Step 4: Soak the water tank with vinegar. ...  Step 5: Scrub the water tank.