Operation; Maintenance, Service And Faults - Delta Amplon Series User Manual

When installing the equipment, please ensure that the sum of the leakage
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current of the UPS and the connected devices does not exceed 3.5mA.

1.4 Operation

Do not disconnect the mains on the UPS system or the building wiring out-
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let (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
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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
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button to disconnect the mains.
Before usage, you must allow the UPS to adjust to room temperature for
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at least one hour to ensure that there is no moisture condensing inside the
UPS.
Do not pour and splash any liquid on the UPS. Do not insert any object into
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the UPS's slits and openings. Do not put beverages on or around the UPS.

1.5 Maintenance, Service and Faults

The UPS system operates with hazardous voltages. Repairs may be carried
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out only by qualified maintenance personnel.
WARNING:
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
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the batteries and verify that no current is present and no hazardous volt-
age exists in the terminals of high capability capacitor such as BUS-capac-
itors.
Only qualified personnel can perform battery replacement. Unauthorized
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personnel shall be kept away from the batteries.
WARNING:
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!
The following precautions should be observed before battery replacement:
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- Remove watches, rings, or any other metal objects.
- Use tools with insulated handles.
Chapter 1 Important Safety Warnings
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