Installing A Fan Tray; Removing A Fan Tray - H3C S6850-56HF-CP Manual

Installing a fan tray

CAUTION:
To prevent damage to the fan tray or the connectors on the backplane, insert the fan tray gently. If
you encounter a hard resistance while inserting the fan tray, pull out the fan tray and insert it again.
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
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
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
H3C S6850-56HF-CP Cold Plate-Based Liquid-Cooled Switch 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 connector facing downwards. Grasping the handle of the fan tray
with one hand and supporting the fan tray bottom with the other, 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 Figure2-23.
Figure2-23 Installing a FAN-40B-1-C fan tray in the LS-6850-56HF-CP 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.
fan prefer-direction
command to configure the preferred airflow direction
fan prefer-direction
2-14
command, see