2-29
IMPORTANT:
Before powering on the switch, make sure the fan tray airflow direction and the preferred airflow
direction of the switch are the same. If they are not the same, the system generates traps and logs.
You can use the
fan prefer-direction
command to configure the preferred airflow direction
for the switch. By default, the preferred airflow direction of the switch is from the port side to the
power module side. For more information about the
fan prefer-direction
command, see
H3C S6805 & S6825 & S6850 & S9850 Switch Series Fundamentals Command Reference
.
Select fan trays for the switch as needed. For the available fan trays and their specifications, see
Hardware Information and Specifications.
To install a fan tray:
1.
Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2.
Unpack the fan tray and verify that the fan tray model is correct.
3.
Orient the fan tray with the "TOP" mark on top. Grasp the handle of the fan tray with one hand
and support the fan tray bottom with the other, and slide the fan tray along the guide rails into
the slot until the fan tray is fully seated in the slot and has a firm contact with the backplane. See
Figure2-47 Installing an LSWM1FANSA fan tray in the S6850-56HF switch
Removing a fan tray
WARNING!
•
Ensure electricity safety and never touch the rotating fans when you hot-swap a fan tray.
•
To prevent a fan from causing loud noise, do not touch the fan blades and rotation axis, even if
the fan is not rotating.
To remove a fan tray:
1.
Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2.
Grasp the handle of the fan tray with one hand and pull the fan tray part way out of the slot.
Support the fan tray bottom with the other and pull the fan tray completely out of the slot.
3.
Put the removed fan tray in an antistatic bag.