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2. Installation and connection
Caution (for installation and connection)
Do not block the air vents on the unit. The BU1002SW has air vents on the
front, side and back, while the BU3002SW has air vents on the front and back.
● Doing so will cause the internal temperature to rise, which may cause the unit to fail and the
battery to deteriorate.
● Leave at least 5 cm of space between the vent and the wall.
Do not connect a standalone transformer such as a voltage transformer
or isolating transformer to the output side.
● Overcurrent may damage the UPS.
● There is no problem in connecting a transformer to the input side.
Do not connect devices that cannot be used with commercial power supply.
● When the unit’s power switch is turned ON and an error occurs with the connected device,
bypass operation is performed and commercial power supply is supplied as is to the con-
nected devices.
Do not connect devices with rated voltage of 200 to 240 VAC or higher.
● The rated output voltage of this device is 200 to 240 VAC.
● Overcurrent may damage the connected devices.
When in use, make sure the output terminal block cover is attached.
Do not turn ON the power switch when it is detached.
● Voltage is applied to the output terminal block when the power switch is ON, which can result
in electric shock.
For PLUGGABLE EQUIPMENT, the socket-outlet shall be installer near
the equipment and shall be easily accessible.
Notes
When moving the unit from a cold place to a warm place, leave it for several hours
before using it.
● If the unit is promptly turned ON after being moved to a warmer place, condensation may form inside the
unit and cause it to fail.
Charge the battery for at least 8 hours soon after purchasing the unit.
● If you do not use the unit for a long time after the purchase, the battery may deteriorate and the battery may
become unusable.
● To charge a battery, connect the AC input plug of the unit to a wall outlet (commercial power).
When storing the unit, charge the battery for at least 8 hours and turn OFF the power switch.
● Even if the unit is not used, the battery gradually discharges, and if it is left for a long time, it goes into an
over discharge state.
The backup time may become shorter or the battery may become unusable.
● We recommend keeping the temperature 25°C or less when storing the unit for long periods of time.
Connect the unit’s AC input plug to a wall outlet (commercial power) for at least 8 hours at the following
intervals:
- Every 6 months when storage temperature is 25°C or less
- Every 2 months when storage temperature is 40°C or less
● Turn off the power switch of the unit during storage.