Operating Instructions; Startup Procedures; Normal System Shutdown; Normal System Turn On - Liebert EXM Distribution Cabinet User Manual

4.0 OPERATING INSTRUCTIONS

4.1

Startup Procedures

Before the unit is placed into service after initial installation, after equipment relocation, or after
equipment has been de-energized for an extended period of time, perform equipment inspection
and startup procedures as detailed in 3.0 - Equipment Inspection and Startup and 5.0 -
Inspection and Startup Checklist.
After initial system startup, the following guidelines can be used for standard equipment
operation. These guidelines should be reviewed for any special equipment modifications, special
site considerations or company policies that may require changes to the standard equipment
operation.
4.1.1

Normal System Shutdown

To perform a normal system shutdown, perform an orderly load equipment shutdown according
to the load equipment manufacturer's recommended shutdown sequence. The load equipment
can be turned Off at each piece of load equipment or at the Liebert EXM
output distribution (circuit breaker) panels located behind the Liebert EXM
front door. Turn Off all unit output breakers, then turn Off the unit's main input circuit breaker. To
remove all power from the Liebert EXM
Liebert EXM
Distribution Cabinet

4.1.2 Normal System Turn On

Make certain all of the Liebert EXM
unit circuit breakers are located behind the front doors. Turn On building power to the Liebert
EXM
Distribution Cabinet
If the circuit breaker has been tripped Off (instead of being turned Off), the circuit breaker handle
must be moved to the Off position before being turned On. If the Liebert EXM
has a voltage monitoring panel, verify proper output voltages before turning On output circuit
breakers. Turn On the panelboard main breakers. Turn On each output circuit breaker following
the load equipment manufacturer's startup sequence.
Vertiv | Liebert Distribution Cabinet
™ ®
Distribution Cabinet
's input breaker or junction box.
Distribution Cabinet
. Turn On the Liebert EXM
for Liebert EXM
™
, turn Off the building power to the
's circuit breakers are in the Off position. All
's main input circuit breaker.
Distribution Cabinet
User Manual |
™
's
Distribution Cabinet
's
Distribution Cabinet
Distribution Cabinet
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