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

2.1 SAFETY PRECAUTIONS

Read tbis manual thoroughly, paying special
attention to the sections that apply to you,
before working with the UPS. Also read the
battery manufacturer's manual before working
on or near the battery.
Under typical operation and with all 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
SECTION 4 -MAINTENANCE,
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
oscilloscopes. Always check with an AC and DC
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 alI battery
precautions when near the battery for any
reason.
ONLY qualified service personnel should
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 &om 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 occur.
This is particularly true when work is
performed on the battery.
A Warning signals 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
UNLESS YOU ARE FULLY QUALIFIED
TO DO SO!! NEVBR WORK ALONE.
A Caution indicates a condition that could
before as
seriously damage equipment and possibly injure
personnel. For example:
CAUTION
Start-up must be performed exactly as
instructed. Follow prompts on the
Advisory Display. Turning the Rotary
Switch too soon may result in immediate
loss of power to the critical load.
A Note emphasizes important text. If the note is
not followed, equipment could be damaged or
may not operate properly. For example:
orderly shutdown of the critical load.
Begin shutdown so it will be completed
while the battery is still supporting the
load.