Replacing The Battery; Notification That The Battery Needs To Be Replaced - Omron BN50T Instruction Manual

4 Maintenance and Inspection
4-2

Replacing the battery

4-2 Replacing the battery
The battery can be replaced while the unit is stopped (power supply output stopped).
Refer to the below-shown reference data "life of the battery" for the details about the life of
the battery.

4-2-1 Notification that the battery needs to be replaced

This Battery life counter function notifies you with LED display and beep sound when the
battery needs to be replaced.
The battery life is determined by the counter function. 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.)
¢ Guidelines for how often to check the battery
4-4
l Be sure to reset the battery life counter after replacing the battery.
After replacing the battery, reset the battery life counter from the "Control" - "Reset
B.life counter" screen in the menu on the unit's LCD.
If you do not reset the battery life counter, a battery replacement alarm may occur
earlier than the expected battery life.
l When the unit is used in compliance with UL standards or CE marking, battery re-
placement should be performed or supervised by personnel familiar with the danger
of batteries and the required precautions.
l If an input power supply error such as a power failure occurs when replacing the
battery while in operation, backup cannot be performed and output stops.
l Do not replace the battery during backup operation. Output will stop.
Additional Information
When the "battery replacement" LED lights up/blinks and beeper sounds, press the
beep stop/test switch for 0.5 seconds to stop the beeper. (Lighting/blinking of "bat-
tery replacement" LED does not disappear.)
l The lead battery used in the unit has a limited lifespan. The life varies de-
pending on your storage/use environment and backup frequency.
The nearer the end of the life is, the more rapidly deterioration proceeds.
Refer to the below-shown reference data "Battery life" for the details about the life
of the battery.
l The battery deteriorates even if it is stored. The higher the temperature is, the
shorter the life becomes.
Ambient 6-month check
temperature
40°C For the first 1 years after start-
ing use
30°C For the first 3 years after start-
ing use
25°C For the first 4 years after start-
ing use
Notes
Notes
Monthly check
When 1 years or more have
passed after starting use
When 3 years or more have
passed after starting use
When 4 years or more have
passed after starting use
BN50T/BN75T/BN100T/BN150T/BN220T/BN300T