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Appendix D Cooling system
The cooling system of an S5120-HI switch comprises the ventilation holes in the chassis, fan tray, and
built-in fans of hot swappable power modules. To guarantee that this cooling system can effectively work,
you must consider the site ventilation design when you plan the installation site for the switches.
IMPORTANT:
The chassis and the power modules use separate air aisles. Make sure both aisles are not blocked.
The fan trays available for the S5120-28SC-HI and S5120-52SC-HI switches include LSPM1FAN and
LSPM1FANB.
•
When an LSPM1FAN fan tray is used, cool air flows in through the air vents in the fan tray panel,
circulates through the chassis and the power modules, and exhausts at the network port side.
•
When an LSPM1FANB fan tray is used, cool air flows in through the air vents in the network
port-side panel, circulates through the chassis and the power modules, and exhausts through the air
vents in the fan tray panel.
The S5120-34C-HI and S5120-58C-HI switches use fixed fan trays and left to right air aisles. Cool air
flows in through the air vents in the left side (relative to the front panel) of the chassis, circulates through
the chassis and the power modules, and exhausts at the air vents in the right side of the chassis and
built-in fan outlet of power modules.
