Maintenance And Storage; 1 Operation; 2 Storage - ABB PowerValue 11T G2 Series User Manual

20 P O W E R VA L U E 1 1T G 2 1 - 3 K VA B/ S
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7 Maintenance and storage

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7 1 Operation

The UPS system contains no user-serviceable parts.
The PowerValue 11 T G2 1-3 kVA UPS requires
only minimal maintenance.
Charge the UPS regularly to maximize the expected
life of the battery. When connected to mains power,
the UPS charges the batteries and prevents them
from overcharging and over-discharging.
• Replace the batteries when the battery service
life has been exceeded (around three to five
years at 25°C ambient temperature). Contact
your local ABB or an agent authorized by ABB
for information about the replacement.
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7 2 Storage

If the batteries are stored in temperate climates,
it is recommended to recharge those batteries
every 3 months for 1-2 hours.
• Charge the UPS once every four to six months
if it is not used regularly.
• In high-temperature regions, charge and discharge
the battery every two months. The standard
charging time should be at least 12 hours.
• Replace the battery when the discharge time is
less than 50 percent of specified after fully
charging. Check the battery connection or
contact your local dealer to order a new battery.
It is highly recommended to shorten the
recharging intervals to every 2 months at
locations subject to high temperatures.