4 Replacing the batteries
4-1 Replacing the batteries
BUM5002R/BUM3002R
38
Notes
⚫
Be sure to reset the battery life counter after replacing the battery. After replacing the
battery, select [2. Control] - [Reset B. life counter] from the LCD menu of the UPS main
unit, and reset the battery life counter. If the battery life counter is not reset, the battery
replacement alarm may be issued before the expected battery life is reached.
⚫
When this unit is used in compliance with UL standards, battery replacement work must
be carried out by a person who understands the hazardous properties of the battery and
the issues requiring care, or the work must be carried out under their supervision.
⚫
When an input power error such as power outage occurs during battery replacement
while the unit is operating, the backup process is disabled and output stops.
⚫
Do not replace the battery during the backup operation. Doing so will stop the output.
⚫
Write the battery replacement date on the battery replacement date label provided with
the replacement battery pack, and attach it to the unit.
* Replaced batteries that are no longer used are collected free of charge, but only the
shipping cost is paid by the customer. For details, refer to the separately provided
“Guidance for replace service”.
Notification that the batteries need to be replaced
When it is time for the batteries to be replaced, the "battery replacement" LED on the UPS
is lit and the buzzer sounds.
The battery life is detected from the battery life counter. The battery life counter operates
while commercial power is supplied after shipment. (When the ambient temperature of the
battery is higher than 25°C, the value of the counter will be incremented at a faster pace.)
Notes
The lead battery used in the unit has a limited service life. The service life varies depending
on your storage/operating environment and backup frequency.
⚫
The nearer the end of service life is, the more rapidly deterioration proceeds.
⚫
The battery deteriorates even if it is stored. Note that as the temperature is increased the
life rapidly shortens.
■ Guideline for how often to check the battery
Ambient
temperature
Every 6-month check
Monthly check
40°C
For the first 1 year after
starting use
When 1 year or more have
passed after starting use
30°C
For the first 3 year after
starting use
When 3 year or more have
passed after starting use
25°C
For the first 4 year after
starting use
When 4 year or more have
passed after starting use
