... shock,fire,so that accidents happen.2.Don't use the equipment in more dust,oil moisture,corrosive ... %.3.When handle or move the equipment,don't upside down,tilt and collision.4.Voltage,frequency, ... off immediately and ask maintenance techincains to repair.Don't repair by yourself. 6.Please disconnect power to ... /outdoor communication cabinet heat exchanger air cooler for electric cabinet with finned tube