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Safety precautions
Important Safety Points
■ Before using
• The battery has not been charged at the time of purchase. Be sure to charge it before use.
• Connect this unit to the input power supply to charge the battery unit.
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.
Take measures for handling unforeseen accidents, such as data backup and system redundancy.
• The output may stop when there is failure in this unit.
■ Connecting
Do not short the unit output lines together, and do not short the battery connection cable (to ground).
• The unit may fail.
In the event you transfer or sell this unit to a third party, please include all of the documentation that came
with the unit. This is to ensure that the unit is used in line with the conditions described in the included
documentation.
• This manual contains important safety-related information. Please read and understand the contents of
the manual before beginning operation. If this manual is misplaced, download the manual from our
website.
■ Using
Before stopping the commercial power to the unit, turn OFF the "Power" switch of the unit.
The unit will stop after 30 seconds of setting the mode selection/backup operation time selection switch to
"0.5".
• The unit enters Battery Mode when input power supply is stopped.
• If the frequency of backup operation becomes high, the battery life may be significantly reduced.
Do not use for an application that frequently requires Battery Mode.
• The battery unit will deteriorate and fail to maintain the specified backup time.
If you want the UPS to stand by in a UPS startup state, set 3 months or less for the input power supply
stop period.
• The UPS startup state means the state of waiting for startup triggered by a remote ON/OFF or BS sig-
nal.
• If the UPS is left unused in the above state for 3 months or longer, the battery goes into overdischarge
state, and the backup time may become shorter or the battery may become unusable.
■ Storing
Storing the battery in UPS for a long term, store at an environment less than 25°C and recharge 15 to 30
minutes the battery within 1 year.
• The battery self-discharges even when it not being used, and it goes into overdischarge state if it is left
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.
• Turn OFF the unit's power when storing it.
Do not install or store the unit in a place exposed to direct sunlight.
• The rise of temperature may cause the battery unit to deteriorate rapidly and become unusable.
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S8BA-series Uninterruptible Power Supply (UPS) User's Manual (U726)
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