Carrier 50KC04-06 Service And Maintenance Instructions page 56

Table A — Serial Number Format
POSITION NUMBER
TYPICAL
POSITION
1-2
3-4
5
6-10
1 2 3 4
1 2 0 8
Week of manufacture (fiscal calendar)
Year of manufacture ("08" = 2008)
Manufacturing location (C = Monterrey, Mexico)
56
5 6 7 8
C 1 2 3
DESIGNATES
Sequential number
9 10
4 6