Omron BU2002RWL, Instruction Manual

Page: 20 / 78

BU
2002
RWL/BU
3002
RWL/BU
5002
RWL
2
8
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 soon after purchasing the unit.
●
The battery self-discharges even when it not being used, and it goes into over-discharge state if it is left
for a long period of time.
●
The battery can be charged once the AC input plug is connected to a commercial power source.
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.
●
Connect the unit to a commercial power source for at least 12 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.
●
Turn off the power switch of the unit during storage.
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.
Do not connect the AC input plug of the unit to its Power Supply Output
Receptacle during the Battery Mode.
●
The unit may fail.
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
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
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.
Do not perform withstand voltage tests.
●
Performing withstand voltage tests may damage the surge absorption element built into the power supply
input circuit.
●
When performing an insulation resistance test, use the 400 VDC range.
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
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.
The battery contains dilute sulfuric acid which is a toxic substance. If fluid leaks
from the battery, do not let it contact your skin or clothes. If contacted, wash
it out with clean water. In particular, if the fluid gets in your eyes, immediately
wash them with clean water and seek medical treatment.
Check system operation beforehand if the unit is used in combination with a
device whose power supply voltage and frequency fluctuate widely, such as a
generator.
●
If the generator’s output voltage/frequency falls out of the input voltage/frequency range, the unit will enter
Battery Mode.
●
Even if the input frequency is within the range, the unit will enter Battery Mode when a rapid change (5
Hz/sec or greater) occurs.