09/2021
Page 7
Installation and Operating Instructions
UPS Edition One 1kVA, 2kVA, 3kVA
1.5 Operation
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Do not disconnect the mains cable from the UPS system or the socket outlet
of the house installation (earthed socket outlet) during operation. This will
cancel the protective earthing of the UPS system and all connected loads.
■
The UPS system has its own internal power source (batteries). The UPS output
sockets or the output terminal block can be live even if the UPS system is not
connected to the socket of the house installation.
■
In order to fully disconnect the UPS system, first press the OFF/Enter button
to disconnect the mains.
1.6 Maintenance, service and faults
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The UPS system operates with dangerous voltages. Repairs may only be
carried out by qualified maintenance personnel.
■
Only persons who are sufficiently familiar with accumulators and the necessary
precautions may replace accumulators and supervise the work. Unauthorised
persons must be kept away from the accumulators.
Caution – risk of electric shock.
Accumulators can cause electric shock and have a high short-circuit
current. When handling accumulators, please take the following necessary
precautions:
■
Remove wristwatches, rings and other metal objects.
■
Only use tools with insulated handles.
■
Before performing any type of service and/or maintenance, disconnect the
batteries and make sure that there is no current and that there is no dangerous
voltage on the terminals of high-power capacitors such as BUS capacitors.
Even after disconnecting the unit from the mains (domestic electrical socket),
the components inside the UPS system are still connected to the battery and
are under dangerous electrical voltage.
■
Before touching, make sure that there is no voltage present!
■
Replace the fuse only with the same type and amperage to avoid fire hazard.
■
Do not dismantle the UPS system.
