4NWP100559R0001_OPM_ABB_PVA31-11-T_10-20kVA_EN_140626 Page 8/37 ABB
Modifications reserved
2 Maintenance
WARNING!
ONLY QUALIFIED MAINTENANCE PERSONNEL SHOULD CARRY OUT
REPAIRING AND BATTERY REPLACEMENTS.
Before carrying out any kind of service and/or maintenance, disconnect the batteries. Verify that no
current is present and no hazardous voltage exists in the capacitor or BUS capacitor terminals.
WARNING!
BATTERY REPLACEMENT SHOULD ONLY BE PERFORMED BY
QUALIFIED PERSONNEL
EVEN AFTER THE UNIT IS DISCONNECTED FROM THE MAINS POWER
SUPPLY, COMPONENTS INSIDE THE UPS ARE STILL CONNECTED TO
THE BATTERY.
WARNING!
THE BATTERY CIRCUIT IS NOT ISOLATED FROM THE INPUT VOLTAGE.
HAZARDOUS VOLTAGES MAY OCCUR BETWEEN THE BATTERY
TERMINALS AND THE GROUND. VERIFY THAT NO VOLTAGE IS
PRESENT BEFORE SERVICING.
Batteries have high short-circuit currents and pose high risks of electric shock. Take all precautionary
measures specified below:
- Remove all jewelry, wristwatches, rings and other metal objects
- Use only tools with insulated grips and handles
- Do not lay tools or metal parts on top of batteries
- Wear rubber gloves and boots
- Disconnect the charging source prior to connecting or disconnecting the battery terminals.
- 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.
- The UPS should be charged once every 4 to 6 months if it has not been used for a long time. 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.
- In high temperature regions, the battery should be charged and discharged every 2 months. The
standard charging time should be of at least 12 hours.
- Under normal conditions, the battery life lasts 3 to 5 years. In case the battery is not in good conditions,
earlier replacement should be made.
- 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.
- Replace batteries with the same number and same type of batteries.
- Do not replace the batteries individually. All batteries should be replaced at the same time following the
instructions of the battery supplier.
- Replace fuses only by devices of the same type and of the same amperage in order to avoid fire
hazards.
2.1 Battery Recycling
WARNING!
NEVER DISPOSE BATTERIES ON FIRE AS THEY MAY EXPLODE.
DO NOT OPEN OR MUTILATE THE BATTERIES.
RELEASED ELECTROLYTE IS HARMFUL TO THE SKIN AND EYES.
Discard appropriately the UPS, battery module and batteries and follow your local laws and regulations.
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