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 Mdoel definition

 

For example:GFDD470-155
      Representing single-phase 220V top blowing type cross cooling blower for dry transformer with the total length of blower of 470mm and the diameter of wheel of Φ155mm

 Specification

      The appearance、installation dimension and wiring diagram for Top blowing type

Application and maintenance

      
       Power should be conformed with the rated parameter of blower Nameplate; overload protection device of motor is equipped    by user. 
 
      Please test the insulation resistance before application; the value should be over 2MΩ,and it cannot be less than 0.5 MΩ when thermal state or temperature is higher. 
    
      Before operating the blower, please check the blower whether the outlook is fine and the connection is reliable or not; wind wheel spinning well without retardance, otherwise, stop operation and exam it immediately. 
       
      User had better operates it not less than an hour per week to avoid components damping and grease lubricant freezing, and it can also clean the inner dust. It should be operated several times if working environment temperature is lower or higher. 
     
      It can be repaired, exchanged and returned repaired in a year if the product with quality problems.