© NEC Corporation 2019 13
Cooling
2.4.2
The required ventilation depends on each particular project. Depending on the structural design
and environmental temperature it may be necessary to add an external cooling.
To integrate the ideal, energy-efficient air conditioner for the LED display, you have to determine
the capacity or size you need. This is important for two reasons: An undersized unit might not cool
adequately the LED display in extremely hot weather. An oversized air conditioner can also
adversely affect your comfort. The unit may switch on and off too often, without running long
enough to dehumidify the LED display properly or cool the space uniformly. And it will consume
more energy than necessary.
Info
The ideal environment temperature for the LED display is 25
°C.
2.5
Power Supply
Use the power cord provided with this equipment in accordance with the table below. If a power
cord is not supplied with this equipment, please contact NEC. For all other cases, use the power
cord with the plug style that matches the power socket where the equipment is located. The
compatible power cord corresponds to the AC voltage of the power outlet and has been approved
by, and complies with, the safety standards in the country of purchase.
This equipment is designed to be used in the condition of the power cord connected to earth. If
the power cord is not connected to the earth, it may cause electric shock. Please make sure the
power cord is earthed properly.
Table 7: Compatible Plug Types and Power Cords
Plug type
North America
European
Continental
U.K.
Japan
Plug shape
Region
USA /
Canada
Taiwan
EU
(except U.K.)
U.K.
Japan
Voltage
120
V*
110
V
230
V
230
V
100
V
Pins
3
3
2
3
3
* When operating this equipment with its AC 125–240 V power supply, use a power supply cord
that matches the power supply voltage of the AC power outlet being used.
Note
This product can only be serviced in the country where it was purchased.
Use the power cord which has BSMI mark at both ends when you use this equipment in Taiwan.
Caution!
Do not point the air conditioning directly at the LED Poster. This can shorten the
life of the LED Poster or cause condensation. If water condensation has occurred,
unplug the LED Poster and do not use the LED Poster until the condensation has
evaporated.
