H3C Technologies H3C S5820V2 Series Switches - Manual (Page 22)

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NOTE:
To guarantee the grounding effect, use the grounding cable provided with the switch to connect to the
grounding strip in the equipment room as long as possible.
Installing/removing a fan tray
CAUTION:
To ensure good ventilation for the switch:
• Install two fan trays of the same model on the switch. Do not power on the switch when it does not have
fan trays or has only one fan tray installed.
• If both fan trays fail, replace the fan trays within 2 minutes.
• If one fan tray fails, perform either of the following tasks:
{
If the ambient temperature is not higher than 27°C (80.6°F), replace the fan tray within 24 hours and make
sure the failed fan tray is in position before the replacement.
{
If the ambient temperature is higher than 27°C (80.6°F), replace the fan tray immediately.
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.
Select appropriate fan trays as needed. For the optional fan trays and their specifications, see " Fan
trays ."
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. 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 seats in the slot and has a firm
contact with the backplane (see callout 1 in
Figure 15 or Figure 16 ).
4. Fasten the captive screw on the fan tray with a Phillips screwdriver until the fan tray is securely
attached in the chassis (see callout 2 in
Figure 15 or Figure 16 ).
If the captive screw cannot be tightly fastened, verify the installation of the fan tray.