Before using the "24V DC Cooling Fan" must see whether adequate water and ice, water, and ice time must unplug the power cord. Water tank water level to be maintained in a safe and should be changed regularly, be sure to use at the start of the air conditioning fan placed horizontally, not tilted. When to water cooling water as much as possible the use of pure water. Purity of the ingredients purified water, less bacteria, can reduce the growth of bacteria during condensation. "24V DC Cooling Fan" in the long run, due to dust, dirt blocking, will affect the filter, air curtain air flow and cooling effect. Therefore, filter, air curtain is best cleaned once every two weeks. When using the "24V DC Cooling Fan", the distance should not be too close, should be maintained at about 3 m.