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
.
182
12.1.3.5
Cheetah 512x512 and 1024x256 Chassis Fan Replacement
These switchers include four upper, flush-mounted fan assemblies that are easily removed from the
rear exterior of the chassis. Each of the four upper fan assemblies is retained by two, combination
Philip-head thumbscrews (see Figure 93), which are tightened to a #6 screw torque setting (not
more than 9.6 inch-pounds – non-lubricated). The two lower (mid-chassis) surface-mounted fan
assemblies are secured with two, #8x32 retaining screws, which are tightened to not more than 17.8
inch-pounds (non-lubricated) torque setting.
FIGURE 93: Cheetah 512/1024 Series Upper Fan Assemblies
Two, combination
Philip-Head
thumbscrews
Alignment pin
(another pin on
opposite corner)
Fan
Assembly
Tapped
Hold-down
Spacers
Fan
Assembly
Alignment
holes
Fan Assembly Power
Connectors
Cheetah 512/1024 Series
Upper Top Fans
Upper Bottom
Fans
Mid-Chassis Fans
Summary of Contents for Cheetah 1024x256
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