
102 Chapter 7 Cooling units
241-1501-240 5.2S2
Fan controller replacement
Replace a fan controller module to restore fan operation.
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“Prerequisites to fan controller replacement” (page 102)
•
“Fan controller replacement task flow” (page 102)
Prerequisites to fan controller replacement
•
You need the appropriate version of a fan controller:
— NTHR10AA for an NTHR51AA lower (rear) cooling unit
— NTHR10AB for an NTHR51AB lower (rear) cooling unit
— NTHR10AA for an NTHR52AA for an upper (front) cooling unit
— NTHR10AB for an NTHR52AB for an upper (front) cooling unit
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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 AA and AB versions of the cooling units are interchangeable, but
their parts are not.
•
When a fan still does not operate after replacing the fan and its controller,
replace the cooling unit as indicated in “Cooling unit replacement”
(page 100).
Fan controller replacement task flow
This task flow shows the sequence of procedures you do to replace a fan
controller. To link to any procedure, go to “Task flow navigation” (page 103).
Summary of Contents for Passport 15000
Page 1: ...Passport 15000 20000 Hardware Installation Maintenance and Upgrade 241 1501 240 ...
Page 2: ......
Page 4: ......
Page 6: ...6 Publication history 241 1501 240 5 2S2 ...
Page 32: ...32 Contents 241 1501 240 5 2S2 ...
Page 48: ...48 About this document 241 1501 240 5 2S2 ...
Page 52: ...52 Chapter 1 Overview of hardware tasks 241 1501 240 5 2S2 ...
Page 70: ...70 Chapter 2 Safety considerations and best practices 241 1501 240 5 2S2 ...
Page 84: ...84 Chapter 4 Alarm BITS module 241 1501 240 5 2S2 ...
Page 94: ...94 Chapter 5 CP and FP cables 241 1501 240 5 2S2 ...
Page 178: ...178 Chapter 11 Initial switch hardware installations 241 1501 240 5 2S2 ...
Page 182: ...182 Chapter 12 MAC address module 241 1501 240 5 2S2 ...
Page 216: ...216 Chapter 14 Power and ground hardware of a Passport 15000 or 20000 241 1501 240 5 2S2 ...
Page 872: ...872 Chapter 17 Hardware procedures 241 1501 240 5 2S2 ...
Page 873: ......