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3-4. Operation
•
Do not disconnect the mains cable on the UPS system or the building wiring outlet
(shock-proof socket outlet) during operations since this would cancel the protective earthing
of the UPS system and all connected loads.
•
The UPS system features its own, internal current source (batteries). The UPS output sockets
or output 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.
•
Prevent fluids or other foreign objects from entering the UPS system.
3-5. Maintenance, service and faults
•
The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified
maintenance personnel.
•
Caution - Risk of electric shock. Even after the unit is disconnected from the mains
(building wiring outlet), components inside the UPS system are still connected to the battery.
They might be electrically live and dangerous.
•
Before carrying out any kind of service and/or maintenance, disconnect the batteries and verify
that no current is present and no hazardous voltage exist in the terminals of high capability
capacitor such as BUS-capacitors.
•
Only people adequately familiar with batteries and with the required precautionary measures
may replace batteries and supervise operations. Unauthorized persons must be kept away from
the batteries.
•
Caution - Risk of electric shock. The battery circuit is not isolated from the input voltage.
Hazardous voltages 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 measures specified below and any other measures necessary when working
with batteries:
•
Remove wristwatches, rings and other metal object
•
Use only tools with insulated grips and handles
•
When changing batteries, install the same number and same type of batteries.
•
Do not attempt to dispose of batteries by burning them. This could cause battery explosion.
•
Do not open or destroy batteries. Escaping electrolytes can be toxic and cause injury to the skin and eyes.
•
Replace the fuse with the same type and amperage in order to avoid fire hazards.
•
Do not dismantle the UPS system.
•
Connect UPS to short-circuit protected building wiring.
•
The UPS system has internal fuses on both DC & AC inputs. Those devices do not protect the
up stream 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.
4
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