2
★
Earth connection is essential before connecting to the building
wiring terminal.
1.2 Operation
★
Do not disconnect the earth conductor cable on the UPS or the
building wiring terminals at any time since this will affect the
protective earthing of the UPS system and of all connected
loads.
★
The UPS output terminal block may be electrically live even if
the UPS system is not connected to the building wiring
terminal.
★
In order to fully disconnect the UPS, turn the M1/M2/N input
breaker to the “OFF” position, then disconnect the mains lead.
★
Ensure that no liquid or other foreign objects can enter the
UPS.
1.3 Maintenance, servicing and faults
★
The UPS operates with hazardous voltages. Repairs should be
carried out only by qualified maintenance personnel.
★
Caution - risk of electric shock. Even after the unit is
disconnected from the mains power supply (building wiring
terminal), components inside the UPS are still connected to
the battery which are potentially dangerous.
★
Before carrying out any kind of service and/or maintenance,
please disconnect the batteries. Verify that no current is
present and no hazardous voltage exists in the capacitor or
BUS capacitor terminals.
★
Batteries must be replaced only by qualified personnel.
★
Caution - risk of electric shock. The battery circuit is not
isolated from the input voltage. Hazardous voltages may occur
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