H3C Technologies H3C SecPath F5000-A5 Firewall - Manual (Page 14)

4
Cooling
The F5000-A5 firewalls adopt left to right airflow for heat dissipation. Plan the installation site for
adequate ventilation.
• Leave at least 10 cm (3.94 in) of clearance at the inlet and outlet air vents.
• The installation site has a good cooling system.
Figure 1 Airflow through the F5000-A5 chassis
ESD prevention
CAUTION:
•
Check the resistance of the ESD wrist strap for safety. The resistance reading should be in the range of
1 to 10 megohm (Mohm) between human body and the ground.
• The F5000-A5 does not provide any ESD wrist strap. Prepare it yourself.
To prevent electrostatic discharge (ESD), follow these guidelines:
• Make sure the firewall and rack are correctly grounded.
• An anti-static floor is installed and correctly grounded.
• Maintain the humidity and temperature at a compliant range in the equipment room. For more
information, see "
Temperature and humidity ."
• Always wear an ESD wrist strap and ESD cloth when touching a circuit board, interface module, or
transceiver module.