Safety of persons
RISK OF VOLTAGE BACKFEED. The system has its own power source (the
battery). Isolate the UPS and check for hazardous voltage upstream and
downstream during lockout-tagout operation. Terminal blocks may be
energized even if the system is disconnected from the AC power source.
Dangerous voltage levels are present within the system. It should be
opened exclusively by qualified service personnel.
The system must be properly grounded.
The battery supplied with the system contains small amounts of toxic
materials. To avoid accidents, the directives listed below must be observed:
Servicing of batteries should be performed or supervised by
personnel knowledgeable about batteries and the required
precautions.
When replacing batteries, replace with the same type and number
of batteries or battery packs.
Do not dispose of batteries in a fire. The batteries may explode.
Batteries constitute a danger (electrical shock, burns). The short-
circuit current may be very high.
Precautions must be taken for all handling:
Wear rubber gloves and boots.
Do not lay tools or metal parts on top of batteries.
Disconnect charging source prior to connecting or disconnecting
battery terminals.
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 (applicable to equipment and remote
battery supplies not having a grounded supply circuit).
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