Gently remove the front plastic bezel cover from the UPS. Loosen and remove the four screws on the front battery door. Lay the battery door aside for reassembly.
Note: The VA model includes a pull handle to remove this door. It has two built-in connectors that disconnect when servicing the battery. Gently pull battery wiring out and disconnect the two slotted battery connectors. Grasp the battery pack assembly, and pull it out of the front of the UPS.
Unpack the new battery assembly taking care not to destroy the packing. Compare new and old battery assemblies to make sure they are the same. Line up and slide in the new replacement battery pack. Reconnect the two slotted battery connectors and gently push the battery wiring and battery pack assembly back into the UPS.
Reattach the front battery door with the four screws. Reattach the front plastic bezel cover to the UPS. NOTE These are hot-swappable replacement batteries. However, caution should be exercised because during this procedure the load is unprotected from disturbances and power outages. Replace the fuse with the same type and rating. Remove the input fuse. Locate the spare input fuse that is included with the UPS.
Insert the spare fuse into the fuse holder, and reinstall assembly into the UPS. Twist by hand; rotate clockwise until fuse holder locks into position. Reconnect the input power cord to input AC supply. Restart the UPS. The UPS is ready for normal operation. Use this information to determine whether external factors caused the problem and how to remedy the situation.
The Fault indicator will illuminate, indicating the UPS detected a problem. An alarm will sound, alerting that the UPS requires attention.
On bypass due to DC bus overvoltage; beep every 4 sec. On bypass due to control power supply failure; beep every 4 sec. On bypass due to PFC failure; beep every 4 sec. On bypass due to inverter failure; beep every 4 sec. Check Flashing battery connection, completely power down and reboot UPS. If a problem persists, consult your local dealer, Liebert representative or contact the Liebert Worldwide Support Group.
Please have the UPS model number and serial number available at the time of your inquiry. Battery indicator LED is illuminated. UPS has reduced battery time. Cause Solution UPS is short circuited or overloaded. Disconnect all loads and ensure nothing is lodged in output receptacles. Ensure loads are not defective or shorted internally. UPS not plugged in. UPS is operating from battery mode. Save data and close applications. Utility voltage out of UPS input range. Ensure utility supply voltage is within acceptable limits for UPS.
Batteries are not fully charged. Keep UPS plugged in continuously at least 24 hours to recharge batteries. UPS is overloaded. Check load level display and reduce the load on the UPS. Batteries may not be able to hold a full charge due to age. Replace batteries.
Contact your local dealer, Liebert representative or the Liebert Worldwide Support Group for replacement battery kit. Cause Solution UPS overloaded or load equipment is faulty.
Check load level display and remove non-essential loads. Recalculate the load and reduce number of loads connected to UPS.
Check load equipment for faults. Load is on bypass power. Ensure UPS is not overloaded, ventilation openings not blocked, or room ambient temperature is not excessive.
UPS internal DC bus overvoltage. UPS requires service. UPS control power supply fault. UPS inverter fault. UPS failed the battery test. UPS shutdown due to a command from the communications port s. Your UPS has received a signal or command from the attached computer.
If this was inadvertent, ensure the communication cable used is correct for your system. For assistance, contact your local dealer, Liebert representative or the Liebert Worldwide Support Group. AC LED is flashing. UPS detected a line-toneutral reversal or a loss of proper grounding; continuous horn and UPS will not start. This is active only when power is first applied to the input. Contact a qualified electrician to verify site wiring. Battery source is not available; continuous horn.
Check battery connections, completely power down and restart UPS. Bypass voltage is present, but is disabled for use because the voltage or frequency is outside acceptable limits.
If the AC is present but the voltage or frequency exceeds the acceptable range for safe operation with a load, the bypass will be disabled and this LED will flash, indicating that the bypass is unavailable. Battery LED is flashing. Bypass LED is flashing. Specifications subject to change without notice. All names referred to are trademarks or registered trademarks of their respective owners. Related documents. Do not continue to use the UPS if the front panel indications 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 unauthorized personnel away from the batteries. Never block or insert any object into the ventilation holes or other openings of the UPS. 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. Do not open or mutilate the battery or batteries. Released electrolyte is harmful to skin and eyes. It may be toxic. A battery can present a risk of electrical shock and high short circuit current.
The following precautions should be observed when working on batteries:. 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 operations, cause data loss, or even damage equipment.
Complete model specifications appear at the end of this manual. An on-line UPS continuously conditions and regulates its output voltage, whether utility power is present or not. It supplies connected equipment with clean sine wave power. Sensitive electronic equipment operates best from sinewave power. For ease of use, the Liebert GXT2U features a light-emitting diode LED display to indicate either load percentage or battery capacity depending upon the mode of operation.
They minimize any surges or interference present in the utility line and keep the sensitive equipment protected. Extracting this sinewave input current achieves two objectives:. This results in cleaner power being available to other devices in the building not being protected by the Liebert GXT2U. 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 utility 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. 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 optimum efficiency and voltage, thus increasing reliability.
Optional external battery cabinets are available to extend battery run times. Bypass operation is indicated by an audible alarm and illuminated 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. The bypass power path does NOT protect the connected equipment from disturbances on the utility supply.
Visually inspect the UPS for freight damage. It may be toxic. 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 operations, cause data loss, or even damage equipment. Complete model specifications appear at the end of this manual.
An on-line UPS continuously conditions and regulates its output voltage, whether utility power is present or not. It supplies connected equipment with clean sinewave power. Sensitive electronic equipment operates best from sinewave power. MultiLink software can also remotely control UPS operation. They minimize any surges or interference present in the utility line and keep the sensitive equipment protected.
Upon a utility 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. This allows the inverter to operate continuously at its optimum efficiency and voltage, thus increasing reliability.
Optional external battery cabinets are available to extend battery run times. To manually transfer the connected load from the inverter to bypass, press the Standby button once. Visually inspect the UPS for freight damage.
Report damage to the carrier and your local dealer or Liebert representative. Take proper precautions when lifting or moving it. Decide where to place the GXT 2U. 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 4 inches mm in the front and rear of the UPS. The GXT 2U may be installed in either a tower configuration or in a rack, depending on available space and use considerations.
If any battery cabinets are added, they will include spacers to accommodate the additional cabinets shown below, right.
They are used to move the UPS into and out of the rack. If desired, install the optional rack mount handles that were shipped with the UPS. Contact your local dealer or Liebert representative for these additional options and any assistance needed.
Unpack the two slide assemOuter Locking members blies and mounting hardmechanism ware. The slide assemblies are interchangeable between left-hand or righthand.
Remove the inner member of each slide assembly as seen at right Slide assemblies by extending it to its outerInner most position, depressing the locking mechanism and members then pulling the inner member from the slide assembly. Outer members Mounting bracket 9 3. The brackets allow adjustment of up to eight inches of the slide assembly mounting position, front-to-back, on the rack mounting rails.
Determine which adjustment holes to use on the bracket, and attach it to the slide assembly on the stationary outer member using the bar nuts and binding head screws provided in the slide assembly kit. Insert two screws from the inside of each slide assembly. NOTE Bar nuts may not be required on all installations, depending on the type of racks being used.
Install the slide assemblies, with brackets attached in Step 4 into the the rack enclosure. The return flanges on the mounting brackets and outer members fit to the inside of the rack mounting rails. Insert the eight screws loosely finger-tight.
Make sure the slide assemblies are in the same alignment position on all four rack mounting rails. Insert the UPS, with inner members attached from Step 3, into the slide assemblies. You may need to depress the locking mechanisms on the inner and outer members of the slide assemblies to allow the slides to retract.
The UPS should move smoothly forward and backward on the slide assemblies. If not, recheck alignment. 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 receptacles on the rear of the UPS.
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. Plug the UPS into a dedicated wall receptacle properly protected by a circuit breaker or fuse in accordance with national and local electrical codes.
The wall receptacle must be grounded. The UPS is now providing conditioned power to your equipment. There is no limit to the number of external battery cabinets that can be used but each cabinet will increase the battery recharge time.
External battery cabinets can be used in rack-mount or tower configuration. Take proper precautions when lifting them. Visually inspect the external battery cabinet for freight damage.
Optional rack-mount handles are shipped with the external battery cabinet and may be installed at this time if desired. 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. 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. Connect the supplied external battery cabinet cable to the rear of the external battery cabinet, then to the rear of the UPS.
The UPS is now equipped with additional backup battery runtime. For approximate battery runtimes refer to the Battery Run Times charts in this manual.
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