Serial Number Explanation

The table below designates the serial numbers and lid styles based on the year manufactured.
Lid Style | Serial Number | Year |
---|---|---|
D | 00152 - 00269 | 1959 |
D | 00270 - 00550 | 1960 |
D | 00551 - 00739 | 1961 |
D | 00740 - 00963 | 1962 |
D | 00964 - 01292 | 1963 |
D | 01293 - 01457 | 1964 |
D | 01458 - 01667 | 1965 |
D | 01668 - 02023 | 1966 |
D |
02024 - 02453 |
1967 |
D | 02454 - 03622 | 1968 |
D |
03623 - 04946 |
1969 |
D | 04947 - 10789 | 1970 |
1st Modification |
10790 - 11377 |
1971 |
1st Modification | 11378 - 12237 | 1972 |
1st Modification |
12238 - 13402 |
1973 |
1st Modification | 13403 - 15295 | 1974 |
1st Modification |
15296 - 17617 |
1975 |
n/a | 17618 - 19907 | 1976 |
n/a |
19908 - 22215 |
1977 |
n/a | 22216 - 25380 |
1978 |
n/a |
25381 - 29386 |
1979 |
n/a | 29387 - 33778 | 1980 |
n/a |
33779 - 37195 |
1981 |
n/a | 37196 - 40284 | 1982 |
n/a |
40285 - 44029 |
1983 |
n/a | 44030 - 48320 | 1984 |
n/a |
48321 - 51999 |
1985 |
No parts are available for D style lids or 1st Modification lids. Part 182530 must be ordered.

Serial numbers for products manufactured from 1986 to 2003 can be explained by the following formula:
Month Character + Product Type Character + Unit Number + Year Characters
Month Character | Month |
---|---|
A | January |
B | February |
C | March |
D | April |
E | May |
F | June |
G | July |
H | August |
I | September |
J | October |
K | November |
L | December |
Fryer Product Type = A
Unit Number = 3 digit sequence (000)
Character | Year |
---|---|
HF | 1986 |
HG | 1987 |
HH | 1988 |
HI | 1989 |
IJ | 1990 |
IA | 1991 |
IB | 1992 |
IC | 1993 |
ID | 1994 |
IE | 1995 |
IF | 1996 |
IG | 1997 |
IH | 1998 |
II | 1999 |
JJ | 2000 |
JA | 2001 |
JB | 2002 |
JC | 2003 |
For example, a serial number of CA016IB indicates:
(C = Month) + (A = Model Fryer) + (016 = the 16th unit manufactured) + (IB = Year)
or the 16th Model 600 Fryer manufactured in March 1992

Serial numbers for products manufactured from 2004 to present can be explained by the following formula:
Product type characters + Last two digits of year + Two digit month + Three digit sequence
For example, a serial number of AA0409123 indicates:
(AA = Product) + (04 = Year) + (09 = Month) + (123 = Three digit sequence)
or the 123rd product manufactured in September 2004

Serial numbers for MKN combi-steamers manufactured from 2004 to present can be explained by the following formula:
Last Two Digits of Year + Six Digit Sequence
For example, a serial number of 06000001 indicates:
(06 = Year) + (000001 = Six digit sequence)
or the 1st product manufactured in 2006

Manufactured before June 1997
Serial numbers for Rational combi-steamers manufactured before June 1997 can be explained by the following formula:
Line + Size + Model + Last two digits of year + Two digit Month + Certified + Three digit sequence
Size Options: (61=61 11=10 12=1020 21=20 22=40)
Model Options: (D=B M=M C=L)
For example, a serial number of C61D9706N005 indicates:
(C = Product Line) + (61 = Size) + (D = Model) + (97 = Year) + (06 = Month) + (N = NSF/UL Certified) + (005 = Three digit sequence)
or the 5th C-line, Size 61, Model B, NSF/UL Certified Rational combi-steamer built in June 1997
Manufactured between June 1997 and December 1998
Serial numbers for Rational combi-steamers manufactured between June 1997 and December 1998 can be explained by the following formula:
Heat Type (Gas or Electric) + Size + Model + Revision + Last two digits of year + Two digit month + Certified + Three digit sequence
Size Options: (61=61 11=10 12=1020 21=20 22=40)
Model Options: (D=B M=M C=L)
For example, a serial number of E61CA97069005 indicates:
(E = Heat type) + (61 = Size 61) + (C = Model) + (A = First revision) + (97 = 1997) + (06 = Month) + (9 = NSF/UL Certified) + (005 = Three digit sequence)
or the 5th size 61, Model L, Revision A, NSF/UL certified electric Rational combi-steamer built in June 1997
Manufactured after 1999
Serial numbers for Rational combi-steamers manufactured after 1999 can be explained by the following formula:
Heat Type (Gas or Electric) + Size + Model + Revision + Last two digits of year + Two digit month + Seven digit sequence
Size Options: (61=61 11=10 12=1020 21=20 22=40)
Model Options: (D=B M=M C=L)
For example, a serial number of E22MA99011000334 indicates:
(E = Heat type) + (22 = 40) + (M = Model) + (A = First Revision) + (99 = Year) + (01 = Month) + (1000334 = Seven digit sequence)
or the 1,000,334th Model M, Revision A, Size 40, electric heat Combi-steamer built in January 1999

Serial numbers for Rational Ultravent manufactured after April 2005 can be explained by the following formula:
Last two digits of part number + Last two digits of year + Hardware index + Two digits of day + Two digits of month + Five digit sequence
For example, a serial number of 740511504-12345 indicates:
(74 = Last two digits of 60.70.374) + (05 = Year) + (1 = Hardware index) + (15 = Day) + (04 = Month) + (12345 = Five digit sequence)
or the 12,345th Rational Ultravent manufactured on April 15th, 2005.

Serial numbers for "IFI" cold and hot cases can be explained by the following formula:
Second to last digit of year + Character representing last digit of year + Character representing month + Three digit sequence
For example, a serial number of 0AC034 indicates:
(0 = Second to last digit of year) + (A = Last digit of year) + (C = Month) + (034 = Three digit sequence)
or the 34th unit manufactured in March 2001
See Month Character Explanation
Character | Year |
---|---|
A | 1 |
B | 2 |
C | 3 |
D | 4 |
E | 5 |
F | 6 |
G | 7 |
H | 8 |
I |
9 |
J | 0 |

Before September 2000
Serial numbers for Blast / Chillers manufactured before September 2000 can be explained by the following formula:
Product Number + Revision + Four digit sequence + Character representing Year + Single digit Month
For example, a serial number of 62902A222R4 indicates:
(62902 = Product number) + (A = Revision*) + (2222 = Four digit sequence) + (R = Year) + (4 = Month)
or the 2,222nd Product 62902 revision A blast /chiller manufactured in April
* Revision may be omitted for initial release of product
After September 2000
Serial numbers for Blast / Chillers manufactured after September 2000 can be explained by the following formula:
Model Number + Revision + Six digit sequence + Two digit week of year + Last two digits of year
For example, a serial number of 12345678 A 123456 01 00 indicates:
(12345678 = Model Number) + (A = Revision) + (123456 = Six digit sequence) + (01 = Week of year) + (00 = Year)
or the 123,456th Model 12345678 Revision A blast / chiller manufactured the first week of January 2000