Installing Fan Tray Assemblies - Huawei OptiX OSN 9800 U32 Enhanced Subrack V100 Quick Installation Manual

Installing Boards and Components
9.2

Installing Fan Tray Assemblies

NOTE
The air flows in the upper and lower portions of a cabinet are in opposite directions, so the fan tray assemblies
at the top and bottom of the cabinet are installed differently. Four labels are located on the fan tray assembly:
two on the top surface and two on the bottom. One of the labels, a mounting direction label, indicates the
mounting direction of the fan tray assembly. Another mounting direction label is present on the air blocking
panel that covers a vacant fan tray assembly slot or inside the fan tray assembly slot. When installing a fan
tray assembly in the upper portion of a cabinet, ensure that the mounting direction label on the right of the fan
tray assembly surface faces upward. When installing a fan tray assembly in the lower portion of a cabinet,
ensure that the mounting direction label on the left of the fan tray assembly surface faces upward.
CAUTION
•
The fan tray assembly is designed for easy installation. If you feel a blockage when inserting a fan tray
assembly into a slot, remove it and check whether it was inserted correctly. Do not use force to insert the
fan tray assembly.
•
The fan tray assembly is heavy. When removing the fan tray assembly, hold it with both hands to prevent it
from falling off.
Fan tray assembly (installation label on the left)
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