Operation; Maintenance, Service And Faults - LEGRAND NUMERIC Valura User And Installation Manual

1-4. Operation

Do not disconnect the mains cable on the UPS system or the building wiring outlet (shockproof socket outlet)
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during operations since this would cancel the protective earthing of the UPS system and of all connected
loads.
The UPS system features its own, internal current source (batteries). The UPS output sockets or output
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terminals block may be electrically live even if the UPS system is not connected to the building wiring outlet.
In order to fully disconnect the UPS system, first press the OFF/Enter button to disconnect the mains.
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Ensure that no fluids or other foreign objects enter the inside of the UPS system.
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1-5. Maintenance, service and faults

The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified maintenance
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personnel.
CAUTION - risk of electric shock. Even after the unit is disconnected from the mains (building wiring outlet),
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components inside the UPS system are still connected to the battery and electrically live and dangerous.
Before carrying out any kind of service and/or maintenance, disconnect the batteries and verify that no
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current is present, and no hazardous voltage exists in the terminals of high capability capacitor such as
BUS-capacitors.
Only personnel who adequately familiar with batteries and with the required precautionary measures may
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replace batteries and supervise operations. Unauthorized persons must be kept well away from the batteries.
CAUTION - risk of electric shock. The battery circuit is not isolated from the input voltage. Hazardous voltages
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may occur between the battery terminals and the ground. Before touching, please verify that no voltage is
present.
Batteries may cause electric shock and have a high short circuit current. Please take the precautionary
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measures specified below and any other measures necessary when working with batteries:
- Remove wristwatches, rings and other metal objects.
- Use only tools with insulated grips and handles.
When changing batteries, install the same number and same type of batteries.
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Do not attempt to dispose of batteries by burning them. This could cause battery explosion.
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Do not open or destroy batteries. The escaping electrolyte can cause injury to the skin and eyes and may
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be toxic.
Please replace the fuse only with the same type and amperage in order to avoid fire hazards.
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Do not dismantle the UPS system.
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Connect UPS to short circuit protected building wiring.
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The UPS system has internal fuses on both DC & AC inputs. Those devices do not protect the upstream
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cables connected to DC & AC inputs and upstream breakers or fuses shall be set up in accordance with AC
& DC wires ratings to meet the local national electrical code standard.
WARNING: This is a category C2 UPS product. In a residential environment, this product may cause radio
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interference, in which case the user many be required to take additional measures. (only for 220/230/240
VAC system)
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