Instruction manual

2. Preparation for Installation
94
2.9.2 Cooling Conditions for a Switch on a Table
Ensure more than 50 mm of space for air flow from the sides of the device.
2.9.3 Cooling Conditions for a Rack-Mounted Device
Ensure more than 50 mm of space between the device and all structural components of the rack including the side
walls, pillars, guide rails and front and rear doors.
Do not block the air vents of the device. Otherwise, the internal heat is not discharged,
which may cause a fire. Keep more than 50 mm of space from the air vents.
When other equipment with a forced air cooling system exists near this switch, air flow from
different systems can interfere and adversely affect the cooling of the switch. Keep sufficient
space or place a partition between the systems to prevent air flow interference.
Note that the partition should be more than 50 mm away from the side panel of the switch.
• The exhaust air from the other equipment might be taken into the switch, and the intake air
temperature of the device might exceed the environmental specification limits.
• When the other equipment has a too strong an intake exhaust air system, adverse air
pressure to the device air flow might be generated and the internal cooling performance
might decrease.
Do not block the air vents of the device. Otherwise, the internal heat is not discharged,
which may cause a fire. Keep more than 50 mm of space from the air vents.
Make sure that the temperature inside the rack is within the operating temperature specified for
the switch. Otherwise, the device might malfunction or fail. To meet the temperature
requirements, consider the following means:
• Install fans inside the rack for sufficient ventilation.
• Replace the front and the rear doors with punched holes for cooling or remove the doors in
order to achieve good ventilation.
• Reduce the number of items contained in the rack and mount the device under other heat
emitting bodies when necessary.
When other equipment with forced air cooling system exists above or under this device, air flow
from different systems can interfere and adversely affect cooling, causing a malfunction or a
failure. Keep spaces between the systems in the rack to prevent air flow interference.
• The exhausted air from other equipment might be taken into the switch, and the intake air
temperature of the switch might exceed the environmental specification limits.
• When other equipment has an intake or exhaust air system that is too strong, air moving in
the opposite direction of the switch’s air flow might be generated, affecting the internal
cooling performance.