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1.4 Operation
• Do not disconnect the mains cable on the UPS system or the building wiring
outlet (shockproof socket outlet) 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 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 no fluids or other foreign objects from inside of the UPS system.
1.5 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 and 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 exists
in the terminals of high capability capacitor such as BUS-capacitors.
• Only persons are adequately familiar with batteries and with the required
precautionary measures may 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 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 objects
－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 electrolyte can cause injury to the
skin and eyes. It may be toxic.
• Please replace the fuse only with the same type and amperage in order to
avoid fire hazards.
• Do not dismantle the UPS system.
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