"Cooling Fan" unit wiring should be properly and securely, to prevent rats from biting and avoid stress, tension, power cord or unauthorized changes to the line of control. (Such as the power cord is damaged, in order to avoid danger, it must be replaced by the manufacturer or its maintenance department or similarly qualified personnel.Grounded, you must be grounded! Ground wire must be connected to the building of a dedicated anti-grounding device. ) In order to ensure the cooling effect, consider the installation of filters to protect the evaporator. Do not use the capacity incorrect insurance lines or other metal wire, it may cause malfunction or fire. Humidity, temperature, place strict requirements should consult a professional guidance to use. During operation there is any abnormal situation should immediately stop using and manufacturing company or distribution, please notify service point.