Important Oil Information

• refrigerant oil must adequately perform four basic functions

1. Lubricate
   
   
2. Scaling off the high side from the low side
   
   
3. Transferring heat
   
   
4. Damper compressor noise
   
   
   • Oils should be chemically stable
     
     
   • It should not react chemically with its
     
     
     • Refrigerants contained in the system
       
       
     • Metals
       
       
     • Motor insulation
       
       
   • Also it should not react readily to the presence of normal contaminants

• Non condensable
  
  
• Moisture
  
  
• Flux/ wax