Heat Exchanger, Ref. SVCE (532,590,632,680,690,
          685-2,695-2)
  532     Use From M/P1185040 to M/P1185139.
          Use From M/P1203740 to M/P1203839.
          Use Starting with M/P1206090.
          See 7015718 for additional serial breaks
  590     Use Starting with M/P1197840.
          See 4250980 for additional serial breaks
  632     Use Prior to Serial #2128562.  Starting
          with Serial #2128562, see 7016404.
680/685-2 Use From Serial #1810000 to #2271174.
          Prior to Serial #1810000, see 4251240.
          Starting w/Serial #2271174, see 7016012.
690/695-2 Use Prior to Serial #2269189.  Starting
          with Serial #2269189, see 7016491.