C
HEETAH
S
ERIES
S
WITCHERS
–
C
HAPTER
12
81-9059-0570-0
Rev. C
Proprietary Information of
PESA
S
WITCHING
S
YSTEMS
,
I
NC
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183
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Cheetah 512 and 1024 Series Fan Assembly Replacement Procedure
Perform the following sequence to replace a faulty, upper fan assembly (see figure 93):
1.
Completely loosen the two thumbscrews that are securing the fan assembly.
2.
Carefully, remove the fan from it’s mounting until the fan power cord can be accessed
and disconnect the fan power cord from the fan power receptacle.
When replacing fans during energized system conditions, be aware that the
new fan replacement will energize upon power reconnection.
3.
Replace the fan and reconnect the fan power cord to the fan power receptacle.
4.
Align the alignment pins with their corresponding alignment holes and secure the
thumbscrews with not more than 9.6 inch-pounds of torque.
For the redesigned, surface-mounted fan assemblies, perform the following sequence to
replace a faulty mid-chassis fan assembly:
1.
Disconnect the fan power cord from the chassis fan power receptacle.
2.
Remove the two fan-assembly retaining screws.
3.
Replace the fan assembly and secure the new fan assembly with the two fan-assembly
retaining screws (torque according to screw size).
When replacing fans during energized system conditions, be aware that the
new fan replacement will energize upon power reconnection.
4.
Reconnect the fan power cord to the fan power receptacle.
Summary of Contents for Cheetah 1024x256
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