33
6. Maintenance and inspection
Warnings
An electric shock or short may occur
●
Do not put you hand into the opening of the battery when replacing the battery.
●
Do not insert a metal thing into the inside of the battery.
If liquid (dilute sulfuric acid) leaks from the battery, do not touch it.
●
Doing so may cause a burn and blindness. If the liquid gets in eyes or spills on your skin,
wash them with clean water and see a doctor.
Ambient temperature
20
°
C
30
°
C
Battery life
4 to 5 years
2 to 2.5 years
Replacing cycles
4 years after the date of the first use
2 years after the date of the first use
Ambient temperature
20
°
C
30
°
C
Checking every 6 months
Up to 3 years after the date
of purchase
Up to 1.5 years after the date
of purchase
Checking every month
Over 3 years after the date
of purchase
Over 1.5 years after the date
of purchase
6. Maintenance and inspection
6-1 Checking the battery
The sealed lead-acid battery mounted in the UPS has its own life. (The life of the battery varies depending on
storage conditions, the surroundings and backup frequency.) As the battery life draws near, the deterioration
takes place much faster. Check the battery regularly by yourself.
1. Battery life (replacing cycles)
2. How to check the battery
Obtain the back-up time according to "5-1 Measuring method of the backup time" on page 32.
If the measured value is half of the "initial value of the backup time," the battery needs replacing.
3. A guideline and cycle of the battery checking (measuring the backup time)
* The battery deteriorates even under conditions of storage. The higher the temperature is, the
shorter the life becomes.
6-2 Replacing the battery
You can replace the battery of this UPS by yourself.
You can replace the battery mounted in the UPS even under usual service conditions (power is
feeding). Of course you can also replace the battery while the UPS is off (no power is feeding). You
can choose either of the methods for replacing at your convenience.
* Do not perform a backup operation and turn off the UPS immediately in the cases where you
replace the battery either under usual service conditions, or a power failure or other failures occur
while the battery is not connected, the UPS.
