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 Explanation
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)

Year Character Explanation
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

Year 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