Hitachi GR4000 Series Safety Manual page 10

Hitachi GR4000/GS4000 Series Routers and Switches Safety Guide
This device may have multiple power supplies installed, each having a separate
source of mains power. When turning power OFF to the device, make sure that
all the power switches and circuit breakers attached to the device are set to OFF.
Comply with the instructions written on the label attached to the device:
Do not block the ventilation slots. If you block the ventilation slots, the inside of
the device will overheat and could cause a fire. Reserve at least 70 mm of space
from the ventilation slots of each device to ensure proper air flow through the
ventilation slots.
As shown in the drawings below, the ventilation slots are on the front, back,
right, and left sides for the GR4000-80E1, GR4000-160E1, GS4000-80E1 and
GS4000-160E1, and they are on the right and left sides of the GR4000-80E2,
GR4000-160E2, GR4000-320E (AC), GR4000-320E (DC), GS4000-80E2,
GS4000-160E2, GS4000-320E (AC), and GS4000-320E (DC).
O U T
A ir f l o w f o r G R 4 0 0 0 - 8 0 E 1 , G R 4 0 0 0 - 1 6 0 E 1 , G S 4 0 0 0 - 8 0 E 1 a n d G S 4 0 0 0 - 1 6 0 E 1
A i r f l o w f o r G R 4 0 0 0 - 8 0 E 2 , G R 4 0 0 0 - 1 6 0 E 2 , G R 4 0 0 0 - 3 2 0 E ( A C ) , G R 4 0 0 0 - 3 2 0 E ( D C ) ,
G S 4 0 0 0 - 8 0 E 2 , G S 4 0 0 0 - 1 6 0 E 2 , G S 4 0 0 0 - 3 2 0 E ( A C ) , a n d G S 4 0 0 0 - 3 2 0 E ( D C )
Cooling fans are mounted in the device. Therefore, do not put an object near the
ventilation slots. Doing this causes heat inside the device to accumulate and
6
I N
O U T
O U T
I N
I N
GR4K-GA-0001
Rev. 1.20