9. Maintenance
9.1 Operation
Please note that this UPS has no user-serviceable parts inside. If the battery
service life (3 to 5 years at 25
°
C ambient temperature) has been exceeded,
the batteries have to be replaced. For battery replacement, contact your
dealer.
9.2 Storage
If the UPS is stored in a temperate climatic environment, recharge the battery
every three months by connecting the UPS to the mains power supply for a
period of one to two hours. You should shorten the charging intervals to two
months at locations subject to high temperatures.