Maintenance; Operation; Storage; Battery Replace - AEG Protect D Series User Manual

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9. MAINTENANCE

9.1 Operation

The UPS system contains no user-serviceable parts. If the battery service
life (3~5 years at 25°C ambient temperature) has been exceeded, the
batteries must be replaced. In this case please contact your dealer.
For the best preventive maintenance, keep the area around the UPS clean
and dust-free. If the atmosphere is very dusty, clean the outside of the
system with a vacuum cleaner. For long battery life, keep the UPS at an
ambient temperature of 25°C (77°F)

9.2 Storage

If the batteries are stored in temperate climatic zones, they should be
charged every three months for 1~2 hours. You should shorten the
charging intervals to two months at locations subject to high
temperatures.
When the UPS is intended to store for a long period, recharge the battery
every 6 months by connecting the UPS to utility power. The batteries
charge to 90% capacity in approximately 4 hours. However, it is
recommended that the batteries charge for 48 hours after long-term
storage.

9.3 Battery Replace

If the battery service life has been exceeded, the batteries must be
replaced. Battery replacement should be performed only by qualified
personnel.
When the discharging time is less than 50% of specified after full charged,
the battery may need to be replaced. Please check the battery connection
or contact your local dealer to order new battery.
It recommends shutting off the UPS completely before the replacement. If
there is a battery breaker then turn it off first. Disconnect the battery
cable carefully and make sure no any exposed wires can be touched.
Reconnect the new batteries to the UPS
battery pack installation.
UPS.
by following section 3.3.1
Then turn on the battery breaker and start the
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