V7 UPS2URM3000DC-NC-1E Manual De Instrucciones página 21

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.
To avoid electrical shock, turn off the unit and unplug it form the AC power source before

servicing the battery.
Only persons are adequately familiar with batteries and with the required precautionary

measures may replace batteries and supervise operations.
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, verify that no voltage is present!
Caution - Do not dispose of batteries in a fire. The batteries may explode.

Caution - Do not open or mutilate batteries. Released electrolyte is harmful to the

skin and eyes. It may be toxic.
A battery can may cause a risk of electrical shock and high short-circuit current. The

following precautions should be observed when working on batteries:
a) Remove watches, rings, or other metal objects
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not contact batteries with tools or other metal parts.
e) Disconnect charging source prior to connecting or disconnecting battery terminals.
f) Determine if battery is inadvertently grounded. If inadvertently grounded, remove
source from ground. Contact with any part of a grounded battery can result in electrical
shock. The likelihood of such shock can be reduced if such grounds are removed during
installation and maintenance.
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