Device Noise - Hitachi GR2000-B Series Installation Manual

Hitachi Gigabit Router GR2000-B Series Installation Guide
Caution:
!
(3) Cooling when a GR2000-B is Installed in a Rack
Caution:
!
Note: The temperature inside a rack must be within the range of the operating
*
temperature of the router (0-40 deg. C). In case that the temperature inside a rack
does not satisfy the conditions required, you will have router reliability problems.
Therefore, consider the following ways to keep the temperature inside the rack
within the proper of the operating temperature.
- Set a fan inside a rack for thorough ventilation.
- Use a front/back door which has holes, or detach a door sometimes to let the
- Decrease the number of the devices stored in a rack, or put a router under
Caution:
!
2.10

Device Noise

The only noise generated by the GR2000-B comes from it's internal cooling fans. Plan
an installation taking the noise of the router into consideration. Below are some
ideas for installation with noise as a consideration:
Block out noise by installing a partition or a shelf between the router and people.
Avoid putting a router in an area people use frequently, such as offices, meeting
rooms, at desks, etc.
Put a router in the corner of an office or install it in a rack.
Don't install the router near hard objects that reflect sound easily, such as
windows.
2-10
If you locate other devices with fans near the GR2000-B, the air flow from
those units may interfere with others. In an extreme case, this could cause
the router to overheat and fail. Therefore, remember to keep adequate space
between interfering units. You may also install a partition between devices to
prevent the air flow of one device from blocking the other. If you install a
partition, locate it more than 70mm away from the device.
The space between a router and other objects must be at least 70mm.
Do not block the router's ventilation slots. Otherwise, the inside of the router
can overheat and fail or could possibly cause a fire. Ensure that there is at
least 70 mm of space from the sides of the unit.
air flow through a rack.
another heating object.
If you locate other devices with fans near the GR2000-B, the air flow from
those unit may interfere with the cooling performance of each device as
shown below. In an extreme case, this could cause the router to overheat
and fail. Therefore, remember to keep adequate space between interfering
units. You may also install a partition between devices to prevent the air flow
of one device from blocking the other. If you install a partition, locate it more
than 70mm away from the device.
GR2K-GA-0007
Rev. 5.00