Synthetic Oil absorb

1
Information on R410 refrigerant
It is a mixture of two Refrigerant, better to
Charge in liquid state
Pressure Conditions are Approx. 60 higher With
R-410A
Synthetic Oil absorb moisture quickly, should
Not be exposed to atmosphere
2
Information on R410 refrigerant

• R410A gas is a mixture of 2 Refrigerants HFC32
  HFC-125 ( 5050)
• Compressors for R410a are different ,
• The standing pressure is about 200 to 220 psi
• The limit for discharge and suction pressure at
  350C ambient temprature is 410psi and 130 psi
  respectively.
• The oil used in R-22 compressor is Mineral oil
  where as  in R-410a  Synthetic oil is used(POE)
  poly oil ester oil which is completely miscible
  as mineral oil is not Miscible with HFC.
• The major precaution is to be taken is that for
  compressor, since POE absorbs moisture at faster
  and higher rate than mineral oil. So compressor
  plug should not be plugged Until it is set.
• Also nitrogen must be swept through the system to
  prevent copper oxide formation during brazing.
• It is also recommended that even after brazing
  all tubes , proper nitrogen flushing must be done
  , and then deep vacuumization to be done for the
  system and then only gas charging to be done.
• Also it is recommended that H.P switch should be
  used for compressor protection.
• Gas charging for R410A refrigerant should be
  done with inverted gas Cylinder.