H3C SecPath L5000-AD920 Installation Manual page 9

Figure1-4 Fan tray that draws air
(1) Fan tray handle
ESD prevention
ESD prevention guidelines
To prevent electrostatic discharge (ESD), follow these guidelines:
•
Make sure the device and the rack are reliably grounded.
•
Take dust-proof measures for the equipment room. For more information, see "Cleanliness."
•
Maintain the humidity and temperature at an acceptable level. For more information, see
"Temperature and
•
To avoid possible electrical shocks or injury, wear ESD clothes, ESD gloves, and ESD wrist
strap, and remove any jewelry or watches before you operate the device.
•
Put the removed modules away on an ESD workbench, with the PCB upward, or put them in
ESD bags for future use.
Wearing an ESD wrist strap
CAUTION:
Before you attach an ESD wrist strap, make sure the rack is reliably grounded.
No ESD wrist strap is provided with the device. Purchase one yourself as required.
To attach the ESD wrist strap:
1. Wear the wrist strap on your wrist.
2. Lock the wrist strap tight around your wrist to keep good contact with the skin.
3. Secure the wrist strap lock and the alligator clip lock together.
4. Attach the alligator clip to the rack.
humidity."
1-6
(2) Alarm LED