The role of wet ball gauze in the equipment is mainly as follows: 1. The wet bulb temperature indication is related to the amount of water inhaled by the gauze and the surface evaporation. 2, some regulations must be woven into linen, otherwise it is difficult to ensure the correctness of humidity. 3, placement also pay attention to: 1) Gauze length 100mm 2) Closely wrap the sensor probe, the probe is 25-30mm away from the humidity cup, and the gauze is immersed in the cup The above is the role of wet ball gauze in the equipment, followed by Ai Siwei Xiaobian to understand the electrical part of the maintenance method: 1. Clean the dust on the switchboard and never touch the water. 2. Fasten the thick wire diameter and high current screw terminal. 3. Check the circulating fan fixing screws to prevent loosening during long-term operation. 4. Check the high-current contactor and circuit breaker for discoloration and scorch marks. If there is any, please change it in time.