Companion Portable Technical Service Manual •
PN 20562220 Rev B
12
Companion P
or
tables
Theory of Operation
V
Portable Serial Number Identification
Each C1000/T is identified by a unique serial number. The serial
number is crucial if a problem arises with the unit or support is
ever needed through CAIRE Customer or Technical Service.
Prior to June 2010, the serial number for the C1000/T was etched
on the vent valve mounting bracket. The vent valve is pulled
down to view the serial number when the side covers of the unit
are in place. As of June 2010, the serial number location has
changed. The serial number is now found on a white, rectangular
sticker placed on the outside of the cryogenic container. It can be
seen through the vents on the side of the outer case.
Figure 4 shows a history of the serial number structure for
Companion portables.
4 - 6 - 25 - 1
Designates Year
(4 represents
1984)
Designates
Month
Designates Day
of Month
Designates Number
of Specific Unit
Produced that Day
Portables Manufactured prior to January 1985
Figure 4
88 06 25 01
Designates Year Designates
Month
Designates Day
of Month
Designates Number
of Specific Unit
Produced that Day
Portables Manufactured in and after January 1985 and
prior to October 1994
CB B30 10 29 0964
Designates
Manufacturing
Location
Designates
Portable
Product Code
Designates
Week of
the Year
Designates
Number of
Specific Unit
Produced
that Week
Portables Manufactured after June 2010
95 176 001
Designates Year
(4 represents
1984)
Designates Sequential Day
of Year
(Jan 1 = 001, Dec 31 = 365)
Designates Number
of Specific Unit
Produced that Day
Portables Manufactured in and after October 1994
Designates
Year