Emerson Liebert GXT4-1000RT230, User Manual

Page: 40 / 50

32 Chapter 6 Maintenance
Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual

Note
The internal battery pack is hot-swappable. However, caution should be exercised because during this procedure the load is
unprotected from disturbances and power outages. Do not replace the battery while the UPS is operating in Battery Mode. This
will result in a loss of output power and will drop the connected load.
6.2 Battery Charging
The batteries are valve-regulated, nonspillable, lead acid and should be kept charged to attain their design life. The
Liebert GXT4 charges the batteries continuously when it is connected to the utility input power.
If the Liebert GXT4 will be stored for a long time, Emerson recommends connecting the UPS to input power for at
least 24 hours every four to six months to ensure full recharge of the batteries.
6.3 Precautions
Although the Liebert GXT4 has been designed and manufactured to ensure personal safety, improper use can result
in electrical shock or fire. To ensure safety, observe the following precautions:
1. Turn Off and unplug the Liebert GXT4 before cleaning it.
2. Clean the UPS with a dry cloth. Do not use liquid or aerosol cleaners.
3. Never block or insert any objects into the ventilation holes or other openings of the Liebert GXT4.
4. Do not place the Liebert GXT4 power cord where it might be damaged.
6.4 Checking UPS Status
Emerson recommends checking the UPS operation status every six months.

Check if the UPS is faulty: Is the fault indicator on? Is the UPS sounding an alarm? Does the LCD display panel
display any warning or fault?

Check if the UPS is operating in Bypass mode: Normally, the UPS operates in Normal mode; if it is operating in
Bypass mode, stop and contact your local Emerson representative or Emerson Channel Support.

Check if the battery is discharging: When the utility input is normal, the battery should not discharge. If the UPS
is operating in Battery mode, stop and contact your local Emerson representative or Emerson Channel Support.
6.5 Checking UPS Functions

Note
UPS function check procedures may interrupt power supply to the connected load.
Emerson recommends checking the UPS functions once every six months.
Back up the load data before conducting the UPS functions check. Procedures are as follows:
1. Select Main Menu -> 3 CONTROL -> 1 TURN ON & OFF to enter the TURN ON & OFF screen, and select ‘TURN
UPS BYPASS’ to transfer the UPS to bypass. Check whether the LCD display panel displays the warning normally.
2. Select Main Menu -> 2 CONFIGURATION -> 4 OUTLET1 / 5 OUTLET2 -> 1 OUTLET CONTROL to enter the
OUTLET CONTROL screen (see Figure 3-13), select ‘TURN ON’ or ‘TURN OFF’ and press the ENTER button to
control the programmable receptacle 1/2. Check whether the LCD display panel displays the outlet status normally.
3. Select Main Menu -> 2 CONFIGURATION -> 3 OPERATION MODE to enter the OPERATION MODE screen (see
Figure 3-11), and select ‘GREEN MODE ON’ or ‘GREEN MODE AUTO’ to control the UPS operation mode. Check
whether the LCD display panel displays the mode normally.
4. Select Main Menu -> 3 CONTROL -> 3 BATT TEST to enter the BATT TEST screen, and select ‘1 START’ to start
manual battery test. Check whether the UPS can operate normally in Battery mode. If not, stop and contact your local
Emerson representative or Emerson Channel Support.