Heat Exchanger, Fre SVCE (532, 561, 590)
  532     Use From Serial #964770 to #965069.
          Use From #990700 to #990999.
          Use From #1004775 to #1185039.
          Use From #1185140 to #1203739.
          Use From #1203840 to #1206089.
          See 7015858 For Additional Serial Breaks
  561     Use From Serial #965470 to #965869.
          Use From #1004775 to #1198139.
          Use From #1198390 to #1203139.
          See 7015748 For Additional Serial Breaks
  590     Use From Serial #965870 to #966269.
          Use From #1004775 to #1197839.
          See 4251090 For Additional Serial Breaks