Emerson Liebert UPStation GXT2U User manual

AC Power Systems
For Business-Critical Continuity™
Liebert®UPStation GXT2U™
User Manual - 230V, 700-3000VA

i
TABLE OF CONTENTS
1.0 IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . 1
2.0 GLOSSARY OF SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . 3
3.0 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.0 MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Transient Voltage Surge Suppression (TVSS)
and EMI/RFI Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Rectifier/Power Factor Correction (PFC) Circuit . . . . . . 5
4.3 Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.4 Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.5 DC to DC Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.6 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.7 Dynamic Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.0 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 Tower UPS Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3 Rack-Mount UPS Conversion and Installation . . . . . . . 9
5.4 External Battery Cabinet Installation . . . . . . . . . . . . . 13
6.0 CONTROLS AND INDICATORS . . . . . . . . . . . . . . . . . . . 14
6.1 ON/Alarm Silence/Manual Battery Test Button . . . . . 14
6.2 Standby/Manual Bypass Button . . . . . . . . . . . . . . . . . . 15
6.3 Load/Battery Level Indicators (4 Green, 1 Amber) . . . 15
6.4 Fault Indicator LED (Red). . . . . . . . . . . . . . . . . . . . . . . 15
6.5 Bypass Indicator LED (Amber) . . . . . . . . . . . . . . . . . . . 15
6.6 UPS ON Indicator LED (Green) . . . . . . . . . . . . . . . . . . 15
6.7 Battery Indicator LED (Amber). . . . . . . . . . . . . . . . . . . 16
6.8 AC Input Indicator LED (Green). . . . . . . . . . . . . . . . . . 16
6.9 Output Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . 16

ii
7.0 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . 17
7.1 Normal Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . 17
7.2 Bypass Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.3 Battery Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . 18
7.4 Battery Recharge Mode . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.0 COMMUNICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.1 Communications Interface Port. . . . . . . . . . . . . . . . . . . 19
8.2 Pins 4 & 5 - Remote Shutdown on Battery . . . . . . . . . . 19
8.3 Pins 5 & 6 - Any-Mode Shutdown . . . . . . . . . . . . . . . . . 20
8.3.1 Auto-Enable Output . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.3.2 Pin 6 Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.4 UPS Intelligent Communications . . . . . . . . . . . . . . . . . 21
9.0 CONFIGURATION PROGRAM . . . . . . . . . . . . . . . . . . . . 22
9.1 Liebert UPStation GXT2U Configuration Program
Abilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.1.1 What You Will Need . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10.1 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10.1.1 Internal Battery Replacement Procedures . . . . . . . . 24
11.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . 25
12.0 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
12.1 Battery Cabinet Specifications . . . . . . . . . . . . . . . . . . . 32
13.0 BATTERY RUN TIMES . . . . . . . . . . . . . . . . . . . . . . . . . 33
13.1 Product Warranty Registration . . . . . . . . . . . . . . . . . . . 34

Important Safety Instructions
1
1.0 IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions. Read all safety,
installation, and operating instructions before operating the Uninter-
ruptible Power System (UPS). Adhere to all warnings on the unit and
in this manual. Follow all operating and user instructions. Individuals
without previous training can install and operate this equipment.
It is not intended for use with life support and other designated “criti-
cal” devices. Maximum load must not exceed that shown on the UPS
rating label. The UPS is designed for data processing equipment. If
uncertain, consult your local dealer or Liebert representative.
This UPS is designed for use on a properly earthed (grounded), 50Hz
or 60Hz, 230V supply (programmable for 200, 208, 220, 230, and
240VAC output). Installation instructions and warning notices are
located in this manual.
ELECTROMAGNETIC COMPATIBILITY—The Liebert UPStation
GXT2U™Series complies with the requirements of the EMC directive
2004/108/EC and the published technical standards. Continued com-
pliance requires installation in accordance with these instructions and
use of manufacturer approved accessories only.
Operate the UPS in an indoor environment only in an ambient tem-
perature range of 0°C to +40°C (32°F to +104°F). Install it in a clean
environment, free from conductive contaminates, moisture, flammable
liquids, gases and corrosive substances.
!WARNING
Opening or removing the cover may expose you to lethal
voltages within this unit even when it is apparently not
operating and the input wiring is disconnected from the
electrical source. Observe all cautions and warnings in this
manual. Failure to do so MAY result in serious injury or
death. Refer all UPS and battery service to qualified service
personnel. Do not attempt to service this product yourself.
Never work alone.
!WARNING
This UPS should not be supplied from electrical power
systems of the “IT” (Impedance á Terre) type
(IEC 364 - Electrical Installation of Buildings).

Important Safety Instructions
2
This UPS contains no user serviceable parts except the internal bat-
tery pack. The UPS ON/Standby push buttons do not electrically iso-
late internal parts. Under no circumstances attempt to gain access
internally other than to replace the batteries due to risk of electric
shock or burn. Do not continue to use the UPS if the front panel indi-
cations are not in accordance with these operating instructions or if
the UPS performance alters in use. Refer all faults to your local
dealer, Liebert representative or the Liebert Worldwide Support
Group.
Servicing of batteries should be performed or supervised by personnel
knowledgeable of batteries and the required precautions. Keep unau-
thorized personnel away from the batteries. PROPER DISPOSAL OF
BATTERIES IS REQUIRED. REFER TO YOUR LOCAL LAWS AND
REGULATIONS FOR BATTERY DISPOSAL REQUIREMENTS.
Never block or insert any object into the ventilation holes or other
openings of the UPS.
DO NOT CONNECT equipment that could overload the UPS or
demand half-wave rectification from the UPS, for example: electric
drills, vacuum cleaners, laser printers or hairdryers.
Storing magnetic media on top of the UPS may result in data loss or
corruption.
Turn the UPS off and isolate the UPS before cleaning; use only a soft
cloth, never liquid or aerosol cleaners. Keep the front and rear vents
free of dust accumulation that could restrict airflow.
When replacing batteries, replace with the same Liebert authorized
replacement battery kits.
!CAUTION
Do not dispose of battery or batteries in a fire. The battery
may explode.
Do not open or mutilate the battery or batteries. Released
electrolyte is harmful to skin and eyes. It may be toxic.
!CAUTION
A battery can present a risk of electrical shock and high short
circuit current. The following precautions should be observed
when working on batteries:
• Remove watches, rings, and other metal objects.
• Use tools with insulated handles.

Glossary of Symbols
3
2.0 GLOSSARY OF SYMBOLS
•
Risk of electrical shock
Indicates caution followed by important instructions
AC input
AC output
Requests the user to consult the manual
Indicates the unit contains a valve-regulated lead acid
battery
Recycle
DC voltage
Equipment grounding conductor
Bonded to ground
AC voltage
ON
Standby
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Introduction
4
3.0 INTRODUCTION
Congratulations on your choice of the Liebert UPStation GXT2U™
Uninterruptible Power System (UPS). It provides conditioned power
to microcomputers and other sensitive electronic equipment.
Upon generation, AC power is clean and stable. However, during
transmission and distribution it may be subject to voltage sags,
spikes, or complete power failure that may interrupt computer opera-
tions, cause data loss, or even damage equipment. The Liebert UPSta-
tion GXT2U protects equipment from these disturbances.
The Liebert UPStation GXT2U comes in nominal power ratings of
700, 1000, 1500, 2000 and 3000 VA. Complete model specifications
appear at the end of this manual (see 12.0 - Specifications).
The Liebert UPStation GXT2U is a compact, “on-line” UPS. An on-line
UPS continuously conditions and regulates its output voltage,
whether mains power is present or not. It supplies connected equip-
ment with clean sinewave power. Sensitive electronic equipment oper-
ates best from sinewave power.
For ease of use, the Liebert UPStation GXT2U features a light-emit-
ting diode (LED) display to indicate either load percentage or battery
capacity depending upon the mode of operation. It also provides self-
diagnostic tests, a combination ON/Alarm Silence/Manual Battery
Test button, a Standby button, user configurable program, and two
levels of alarms when the unit is operating on battery.
The Liebert UPStation GXT2U has an interface port for communica-
tion between the UPS and a network server or other computer sys-
tems. This port provides detailed operating information including
voltages, currents, and alarm status to the host system when used in
conjunction with Liebert MultiLink™ software. Liebert MultiLink
software can also remotely control UPS operation.

Major Components
5
4.0 MAJOR COMPONENTS
4.1 Transient Voltage Surge Suppression (TVSS)
and EMI/RFI Filters
These UPS components provide surge protection and filter both elec-
tromagnetic interference (EMI) and radio frequency interference
(RFI). They minimize any surges or interference present in the mains
line and keep the sensitive equipment protected.
4.2 Rectifier/Power Factor Correction (PFC) Circuit
In normal operation, the rectifier/power factor correction (PFC) circuit
converts mains AC power to regulated DC power for use by the
inverter while ensuring that the waveshape of the input current used
by the UPS is near ideal. Extracting this sinewave input current
achieves two objectives:
• The mains power is used as efficiently as possible by the UPS.
• The amount of distortion reflected on the mains is reduced.
This results in cleaner power being available to other devices in the
building not being protected by the Liebert UPStation GXT2U.
4.3 Inverter
In normal operation, the inverter utilizes the DC output of the power
factor correction circuit and inverts it into precise, regulated sinewave
AC power. Upon a mains power failure, the inverter receives its
required energy from the battery through the DC to DC converter. In
both modes of operation, the UPS inverter is on-line and continuously
generating clean, precise, regulated AC output power.
Input Output
Inverte
Battery
Battery
Charger
DC to DC
Converter
Rectifier
TVSS &
EMI/RFI
L
N
G
L
N
G
Dynamic
Bypass

Major Components
6
4.4 Battery Charger
The battery charger utilizes energy from the mains power and pre-
cisely regulates it to continuously “float charge” the batteries. The bat-
teries are being charged whenever the Liebert UPStation GXT2U is
plugged in, even when the UPS is not turned on.
4.5 DC to DC Converter
The DC to DC converter utilizes energy from the battery system and
raises the DC voltage to the optimum operating voltage for the
inverter. This allows the inverter to operate continuously at its opti-
mum efficiency and voltage, thus increasing reliability.
4.6 Battery
The Liebert UPStation GXT2U utilizes valve-regulated, nonspillable,
lead acid batteries. To maintain battery design life, operate the UPS
in an ambient temperature of 20°C to 25°C (68°F to 77°F). Optional
external battery cabinets are available to extend battery run times.
4.7 Dynamic Bypass
The Liebert UPStation GXT2U provides an alternate path for mains
power to the connected load in the unlikely event of a UPS malfunc-
tion. Should the UPS have an overload, overtemperature, or UPS fail-
ure condition, the UPS automatically transfers the connected load to
bypass. Bypass operation is indicated by an audible alarm and illumi-
nated amber Bypass LED (other LEDs may be illuminated to indicate
the diagnosed problem). To manually transfer the connected load from
the inverter to bypass, press the Standby button once.
NOTE
The bypass power path does NOT protect the connected
equipment from disturbances on the mains supply.

Major Components
7
Figure 1 Liebert UPStation GXT2U, Rear View
Rev. USBCARD
Circuit Protector
Mains Input
Cooling Fans
USB card being fitted
in Liebert IntelliSlot®
Port
DB-9
Communications
Port
Output
Sockets
Support Base
External Battery
Connector

Installation
8
5.0 INSTALLATION
5.1 Preparation
1. Visually inspect the UPS for freight damage. Report damage to
the carrier and your local dealer or Liebert representative.
2. Decide where to place the Liebert UPStation GXT2U. Install the
UPS indoors in a controlled environment, where it cannot be
accidentally turned off. Place it in an area of unrestricted airflow
around the unit, away from water, flammable liquids, gases,
corrosives, and conductive contaminants. Maintain a minimum
clearance of 100mm (4 in.) in the front and rear of the UPS.
Maintain an ambient temperature range of 0°C to 40°C (32°F to
104°F).
3. The Liebert UPStation GXT2U may be installed in either a tower
configuration or in a rack, depending on available space and use
considerations. Determine the type of installation and follow the
appropriate instructions in either 5.2 - Tower UPS Installation
or 5.3 - Rack-Mount UPS Conversion and Installation.
5.2 Tower UPS Installation
When using the Liebert UPStation GXT2U in a tower configuration,
use the included support base (shown below, left) to stabilize the UPS.
If any battery cabinets are added, they will include spacers to accom-
modate the additional cabinets (shown below, right).
!CAUTION
The UPS is heavy (see 12.0 - Specifications section). Take
proper precautions when lifting or moving it.
NOTE
UPS operation in temperatures above 25°C (77°F) reduces
battery life.
Support base Spacers added to support
base to accommodate
additional battery cabinets

Installation
9
5.3 Rack-Mount UPS Conversion and Installation
1. For slide rail installations, first remove the top/side fin. Slide the
top/side fin forward, then lift it up to remove. If desired, install the
optional rack mount handles that were shipped with the UPS.
Securing hardware and slide rails are sold separately. Contact
your local dealer or Liebert representative for these additional
options and any assistance needed.
2. Unpack the two (2) rack-
mounting bracket assemblies
and mounting hardware
from the rack-mounting kit
(P/N: RMKIT18-32). Bracket
assemblies are
interchangeable between
left-hand or right-hand.
Remove inner member of
each bracket assembly as
shown at right by extending
it to its outermost position,
depressing the retaining
latch and then pulling inner member from bracket assembly.
NOTE
When rack mounted, the UPS must be supported by a shelf,
brackets or slide rails on each side. The rack mount handles
WILL NOT support the weight of the UPS. They are used to
move the UPS into and out of the rack.
+
–
AC INPUT BATTERY UPS ON BYPASS
UPStation GXT
Optional rack mount handles
Return
flanges
Inner
members
Retaining
latches
Front
members
Rear
members

Installation
10
3. Determine the height position inside the rack enclosure where you
want to mount the UPS or battery cabinet.
Install rear member of each
bracket assembly into rack
enclosure with two (2) M5
screws provided in this kit.
(See figure at right.) Return
flanges on bracket assembly
fit to the inside of rack
mounting rails. Insert
screws loosely (finger-tight)
into top and bottom holes of
return flange on rear mem-
ber. Extend bracket assem-
bly by sliding front member
forward until it touches the front rack mounting rail. Insert two (2)
M5 screws loosely (finger-tight) into top and bottom holes of return
flange on each front member. Make sure bracket assemblies are at
the same mounting height on all four (4) rack mounting rails.
4. Locate eight (8) M4 screws and eight (8) M4 nuts from hardware
pack in this kit. Each nut has a locking, nylon insert that begins
gripping the screw when it is halfway tight. Make sure to tighten
nut and screw completely to assure locking action. Fasten rear
member and front member together using four (4) screws and four
(4) nuts per bracket assembly as shown in the figures below. For
maximum support, locate fasteners for each bracket assembly as
far apart as possible, depending on rack depth, while still joining
both members (See figures below). Check alignment of bracket
assemblies and TIGHTEN ALL SCREWS FROM Steps 3 and 4.
!
CAUTION
Reduce risk of tipping the rack enclosure by placing UPS or
battery cabinet in the lowest possible rack position.
M5 screws
M5 screws
Front rack
mounting rails
Rear rack
mounting
rails
32" rack
depth
M4 nuts
M4 nuts
M4
screws
18" rack
depth
M4 nuts
M4 nuts
M4
screws

Installation
11
5. Prepare the UPS or battery
cabinet (the “equipment”) for
rack mounting by following
instructions in the
equipment’s user manual. The
equipment may require
additional parts to be added or
parts to be removed for rack
mounting. After it is prepared,
lay equipment in rack-
mounting position. Fasten
inner members from Step 2 to
the equipment on both sides
as shown in the figure at right with (8) M4 screws provided in this
kit. Make sure retaining latch is near the rear of the equipment as
shown in the figure at right.
6. Open grease packet
provided in this kit. Apply
a 1" long bead of grease
four (4) places inside the
bottom, curved tracks of
front members as shown at
right. The grease will allow
the equipment to slide into
the bracket assemblies
more easily.
7. Insert the equipment, with inner members attached from Step 5,
into bracket assemblies by inserting top and bottom edges of inner
members into the top and bottom, curved tracks of front members
and sliding the equipment into rack (see figure in Step 6). Ends of
inner members are tapered to allow rear of the equipment to be
angled upward before insertion, if space allows.
Then the rear, bottom edges of inner
members can be placed into front
edge of bottom tracks, and the front of
the equipment can be tipped up into
horizontal position to insert the top
edges of inner members before sliding
the equipment into rack (see figure at right). The equipment
should move smoothly into bracket assemblies. If not, recheck
alignment of front and rear members from Steps 3 and 4.
!CAUTION
Lifting equipment into rack may be a two-person job,
depending on weight of equipment. See equipment’s user
manual.
UPS or battery
cabinet
Front
M4 screws
M4 screws
R
e
t
a
i
n
i
ng
l
a
t
c
h
UPS or
battery
cabinet
Apply
grease
(inside)
Apply
grease

Installation
12
8. Secure front of the equipment to rack mounting rails to prevent
the equipment from sliding out of position. If securing holes are
provided on front of the equipment that align with the center holes
on return flange of front members, you can use the four (4) extra
M5 screws provided in this kit to secure the equipment.
Otherwise, the equipment should be secured to front of rack
mounting rails with four (4) customer-supplied fasteners.
9. To orient the display for
horizontal viewing, remove the
front plastic bezel by pulling
forward evenly on both sides.
The unit has two front panel
overlays. Remove the outer
overlay (used for tower
installation). This reveals a
horizontally oriented front
panel overlay for rack
mounting. Snap the front bezel
back into place.
10. Once the UPS is installed in
the rack, the load may be
connected. Ensure the load
equipment is turned off; plug
all loads into the output
sockets on the rear of the UPS.
11. The input supply cable should
be connected to the electrical
supply distribution in
accordance with local rules and conditions.
12. Turn ON the UPS by pressing the ON button; then turn on the
connected load equipment. The UPS is now providing conditioned
power to your equipment.
+
–
UPStation GXT
AC INPUT BATTERY UPS ON BYPASS
+
–
UPStation GXT
AC INPUT BATTERY UPS ON BYPASS
Vertical
overlay
for
tower
UPS
Horizontal overlay
for rack UPS

Installation
13
5.4 External Battery Cabinet Installation
Optional Liebert external battery cabinets may be connected to the UPS
to provide additional battery run time. External battery cabinets are
designed to be placed all on one side of the UPS or stacked beneath the
UPS. There is no limit to the number of external battery cabinets that
can be used but each cabinet will increase the battery recharge time.
1. Visually inspect the external battery cabinet for freight damage.
Report damage to the carrier and your local dealer or Liebert
representative.
2. For slide rail installations, first remove the top/side fin. Top/side
fin slides forward and then lift up to remove. Optional rack-mount
handles are shipped with the external battery cabinet and may be
installed at this time if desired.
3. Securing hardware and slide rails are sold separately. Please
contact your local dealer or Liebert representative for these
additional options and any assistance needed. Fasten the slides
into position with the screws per the instructions included with
the slide rails.
4. Use the enclosed support bases for the
tower option to prevent tip-over. One
additional set of support base
extensions ships with each external
battery cabinet.
5. Connect the supplied external battery
cabinet cable to the rear of the
external battery cabinet, then to the
rear of the UPS.
6. Turn ON the battery breaker on the
rear of the external battery cabinet.
7. The UPS is now equipped with
additional backup battery run time.
For approximate battery run times,
refer to 13.0 - Battery Run Times.
!
CAUTION
The external battery cabinet(s) are heavy (see
12.0 - Specifications). External battery cabinets can be used
in rack-mount or tower configuration. Take proper precautions
when lifting them.
NOTE
You must use the included Configuration Program to specify
the number of external battery cabinets connected to the UPS.
For more information, see 9.0 - Configuration Program.
Rev. USBCARD

Controls and Indicators
14
6.0 CONTROLS AND INDICATORS
6.1 ON/Alarm Silence/Manual Battery Test Button
This button controls output power to connected load(s) and has
three functions:
•ON
•AlarmSilence
•ManualBatteryTest
ON - Pressing this button will start up the UPS in order to provide
conditioned and protected power.
Alarm Silence - To silence alarms, press this button for at least one
second. After the alarm is silenced, the Liebert UPStation GXT2U will
reactivate the alarm system to alert of additional problems.
Manual Battery Test - To initiate a manual battery test, press the
ON button for at least one second while operating from mains power
with no alarm conditions present.
• If only three of the five Battery LEDs illuminate, allow the UPS to
recharge the batteries for 24 hours.
• After 24 hours, retest the batteries.
• After the batteries have been retested, if only three of the five Bat-
tery LEDs illuminate, contact your local dealer, Liebert represen-
tative or Liebert Worldwide Support Group.
NOTE
The LOW BATTERY and BYPASS reminder alarms CANNOT
be silenced.
All LEDs illuminated
for illustrative purposes only.

Controls and Indicators
15
6.2 Standby/Manual Bypass Button
This button controls output power to connected load(s) and has
dual functions: Standby and Manual Bypass.
6.3 Load/Battery Level Indicators (4 Green, 1 Amber)
The load/battery level indicators have dual functions. During normal
mode operation LED indicators display the approximate electrical
load placed upon the UPS; and during battery mode operation LED
indicators display approximate battery capacity.
The Liebert UPStation GXT2U is equipped with automatic and
remote battery test features. The automatic test occurs every 14 days
(this option is user configurable) if mains has not been interrupted.
Should the battery fail this test, the red Fault indicator LED along
with the A and C diagnostic LEDs will illuminate and an alarm will
sound (refer to 11.0 - Troubleshooting). The remote test feature
functions with Liebert MultiLink 3 software and can remotely initiate
the battery test.
6.4 Fault Indicator LED (Red)
The Fault indicator LED is illuminated if the UPS has detected a
problem. Also, one or more of the load/battery level indicators may be
illuminated (refer to 11.0 - Troubleshooting).
6.5 Bypass Indicator LED (Amber)
The Bypass indicator LED is illuminated when the UPS is operating
from bypass power. An alarm will sound indicating the UPS detected
a problem, or the manual bypass function has been activated.
6.6 UPS ON Indicator LED (Green)
The UPS ON indicator LED is illuminated when the UPS inverter is
operating and supplying power to your connected loads.
!CAUTION
While the UPS is in Normal Mode operation, pressing the
Standby/ Manual Bypass button once will put the UPS into
Bypass Mode.
Once the UPS is in Bypass Mode operation, press the Standby/
Manual Bypass button two distinct times (for about one
second each time) to turn off the UPS. Perform all necessary
shutdown procedures on connected loads before turning off the
UPS.

Controls and Indicators
16
6.7 Battery Indicator LED (Amber)
The Battery indicator LED is illuminated when the UPS is operating
on battery.
6.8 AC Input Indicator LED (Green)
The AC Input indicator LED is illuminated when mains power is
available and within the input specifications.
6.9 Output Voltage Selection
The Output Voltage is user configurable and is designed to allow
selecting or changing the desired output voltage to match the mains
via the Liebert UPStation GXT2U Configuration Program provided
with the UPS. The settings to choose from are 200, 208, 220, 230, and
240 VAC output. The factory default setting is 230 VAC.
!CAUTION
Never change the voltage settings while the UPS is ON and
powering connected loads.
NOTE
Setting output voltage to 200 VAC will cause the UPS unit to
be derated (700/1000 VA to 90%, 1500/2000/3000 VA to 80%)
of the VA and watt ratings listed in 12.0 - Specifications.