Omron BU5002RWLG User Manual page 15

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
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unit and cause it to fail.
Charge the battery 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
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may become unusable.
The battery can be charged once the AC input plug is connected to commercial power.
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Recharge the battery for at least 8 hours every 6 months when the storage
temperature is 25°C or less, or every 2 months when the storage temperature is
40°C or less.
The battery self-discharges even when it not being used, and it goes into over-discharge state if it is left
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for a long period of time. 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.
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Turn OFF the unit's power switch when storing it.
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Do not short the output lines of the unit to each other, and do not short the
output lines to the ground.
The unit may fail.
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Do not connect the AC input terminal of the unit to its Power Supply Output
terminal during the Battery Mode.
The unit may fail.
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Do not connect a page printer (such as a laser printer) to the unit.
The unit repeatedly and frequently switches between Commercial Power Mode and Battery Mode, which
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may shorten the life of the battery.
The page printer has a large peak current, so an excess of the connection capacity or a power failure due
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to instantaneous voltage drop may be detected.
Do not install or store the unit in a place exposed to direct sunlight.
The rise of temperature may cause the built-in battery to deteriorate rapidly and become unusable.
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Do not perform withstand voltage tests.
Performing withstand voltage tests may damage the surge absorption element built into the power supply
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input circuit.
When performing an insulation resistance test, use the 400 VDC range.
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Before stopping the commercial power to the unit, turn OFF the power switch of
the unit.
The unit enters Battery Mode when commercial power is stopped. If you frequently use the unit in Battery
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Mode, the battery life may be significantly shortened.
If this unit is used for an inductive device such as a coil or motor, check the
operation beforehand.
With some types of devices, the effect of inrush current may cause this unit to stop operating properly.
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BU RW/BU
Notes
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RW/BU RWBU RW
xi