Must be checked before use charging valve for nonconforming product, inferior charging valve is strictly prohibited. Ensure charging valve of the high and low pressure pipe, valve and air conditioner installation interface is correct, to verify the inflatable device high-pressure valve is shut. Should be taken before inflatable pressure gauges check system pressure, to prevent the tank pressure more than 1 mpa (10 KGF/cm2). To inflate the airway connection is good, pick up in the air conditioning on at one end, side pick up at the snow tank, the charging valve thimble screw down through the snow kind of tank roof, the snow tank can spillover, then charging valve thimble screw up, the snow kind of pot upside down, the snow kind of filling the air conditioner. This product shall be made with technical qualifications of professional technicians, or under its guidance, and please refer to the related instructions in automobile air conditioner, or related technical manual.