Heat Exchanger, Fre SVCE (561, 680, 685-2)
  561     Use From #1198140 to #1198389 And
          Use Starting With Serial #1203140.
          See 7015748 For Additional Serial Breaks
680/685-2 Use From Serial #1810000 to #2271174.
          Prior to Serial #1810000 See 7016550.
          Starting With #2271174 See 7022318.