Liebert 300 series Installation, Operaton & Maintenance Manual page 49

Testing battery
STARTUP
Testing static
switch
When the Position 3 tests are completed, the
following message will appear:
STARTUP
Test passed. Turn
rotary switch to
position 4
Step 6.
initiates UPS Module normal operation.
Observe the following:
a. Advisory Display LEDs extinguish,
indicating that the Rotary Switch will
remain in Position 4 during normal
operation.
b. The screen displays the following
message:
STARTUP
Testing Input
synchronbation
This scrssn indicates the UPS is temporarily
using the Static Bypass Line to supply
power to the critical load.
The XX in this scresn indicates the number
of seconds elapsed while the UPS internal
control system synckonizes the inverter
with the input power.
When the inverta is synchronized, the
control system automatically retransfers the
critical load from the Static Bypass Line to
the UPS Module. with no interruution of
power to the load. The following ;lefault
message will appear:
NORMAL OPERATION
Load
L o a d X X X %
The NORMAL OPERATION message
indicates the following:
The system status is normal (all meter
l
readings are nominal and the UPS
Module ia synchronized with the input
power).
. The critical load is being supplied
conditioned power through the UPS
Module.
The power being supplied to the critical
l
load is indicated as a percentage of the
UPS power rating.
The Up, Down, or Alarm Silence symbol
l
flashes in the lower right-hand corner of
the screen. This is a normal indication
and means that you may cycle through
various monitoring, and test functions by
pressing the appropriate selection pad.
Start-up is complete when the NORMAt
OPERATION message appears. No further
actions are required of the operator unless an
abnormal condition occurs.
on UPS