Safety Precautions - Liebert 300 series Installation, Operaton & Maintenance Manual

4.1 SAFETY PRECAUTIONS

Read this section thoroughly, paying special
attention to the sub-sections that apply to you,
before working with the UPS. Also read the
on or near the battery.
Under typical operation and with alI UPS doors
closed, only normal safety precautions are
necessary. The area around the UPS system and
battery should be kept free from puddles of
water, excess moisture, or debris.
Special safety precautions are required for
procedures involving handling, installation, and
maintenance of the UPS system or the battery.
Observe precautions in SECTION 2 -
INSTALLATION before handling or installing
the UPS system. Observe precautions in this
section before as well as during performance of
all maintenance procedures. Observe all battery
safety precautions before working on or near the
battery.
This
equipment contains several circuits
that are energized with high voltage. Only
test equipment designated for troubleshooting
should be used. This is particularly true for
voltmeter to ensure safety before making
contact or using tools. Even when the power is
turned Off, dangerously high potentials may
exist at the capacitor banks. Observe all battery
precautions when near the battery for any
reason.
perform maintenance on the UPS system
When performing maintenance with any part of
the equipment under power, service personnel
and test equipment should be standing on
rubber mats. The service personnel should wear
insulating shoes for isolation from direct contact
with the floor (earth ground).
Unless power is removed from the equipment,
one person should never work alone. A second
person should be standing by to assist and
summon help in case an accident should mcur.
This is particularly true when work is
performed on the battery.
A Warning is used to signal the presence of a
possible serious, life-threatening condition. For
example:
WARNING
LETHAL VOLTAGES MAY BE PRESENT
WITHIN THIS UNIT EVEN WHEN IT IS
APPARENTLY NOT OPERATING.
OBSERVE ALL CAUTIONS AND
WARNINGS IN THIS MANUAL. FAILURE
TO DO SO COULD RESULT IN SERIOUS
INJURY OR DEATH. DO NOT WORK ON
OR OPERATE THIS EQUIPMENT
TO DO SO!! NEVER WORK ALONE.
A Caution symbol indicates a condition that
could seriously damage equipment and possibly
injure personnel. For example:
C A U T I O N
Startup must be performed exactly as
instructad. Follow prompts on the
Advisory Display. Turning the Rotary
Switch too soon or in the wrong
sequence may result in immediate loss of
power to the critical load.
A Note symbol is used to emphasize important
text. If the note is not followed, equipment could
be damaged or may not operate properly. For
example:
NOTE
Determine time required
orderly shutdown
of
Begin shutdown so it will be completed
while the battery is still supporting the
load.
the critical load.