
Chapter 7 Cooling units 109
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Temperature sensor bracket assembly replacement
Replace an upper cooling unit temperature sensor bracket assembly to restore
optimum cooling by the fans.
•
“Prerequisites to temperature sensor bracket assembly replacement”
(page 109)
•
“Temperature sensor bracket assembly replacement task flow”
(page 109)
Prerequisites to temperature sensor bracket assembly
replacement
•
You need the appropriate version of temperature sensor assembly
bracket:
— NTHR68AA used with an NTHR52AA upper (front) cooling unit
— NTHR68AB used with an NTHR52AB upper (front) cooling unit
•
The NTCC8938 (or A0647397) and A0521944 (the latter from
NTHR68) temperature sensors are not interchangeable on the bracket
assembly and can only be used with the indicated equipment.
•
The PEC of the cooling units NTHR51AB and NTHR52AB is visible on
its mounting ear. The mounting ears are blank for the NTHR51AA and
NTHR52AA versions. To distinguish a lower cooling unit NTHR51AA
from an upper unit NTHR52AA, observe the cable connectors that are
only on the mounting ear of a lower cooling unit.
•
The PEC of the temperature sensor bracket assembly with version AB is
visible on the installed bracket. The AA version is not visible.
•
The lower cooling unit does not have a temperature sensor bracket
assembly that can be removed.
Temperature sensor bracket assembly replacement task flow
This task flow shows the sequence of procedures you do to replace a
temperature sensor bracket assembly. To link to any procedure, go to “Task
flow navigation” (page 107).
Содержание Passport 15000
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Страница 6: ...6 Publication history 241 1501 240 5 2S2 ...
Страница 32: ...32 Contents 241 1501 240 5 2S2 ...
Страница 48: ...48 About this document 241 1501 240 5 2S2 ...
Страница 52: ...52 Chapter 1 Overview of hardware tasks 241 1501 240 5 2S2 ...
Страница 70: ...70 Chapter 2 Safety considerations and best practices 241 1501 240 5 2S2 ...
Страница 84: ...84 Chapter 4 Alarm BITS module 241 1501 240 5 2S2 ...
Страница 94: ...94 Chapter 5 CP and FP cables 241 1501 240 5 2S2 ...
Страница 178: ...178 Chapter 11 Initial switch hardware installations 241 1501 240 5 2S2 ...
Страница 182: ...182 Chapter 12 MAC address module 241 1501 240 5 2S2 ...
Страница 216: ...216 Chapter 14 Power and ground hardware of a Passport 15000 or 20000 241 1501 240 5 2S2 ...
Страница 872: ...872 Chapter 17 Hardware procedures 241 1501 240 5 2S2 ...
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