Battery Charging; Precautions; Checking Ups Status; Checking Ups Functions - Emerson Liebert GXT4-5000RT230 User Manual


Note
The internal battery pack is hot-swappable. However, caution should be exercised because the load is unprotected from
disturbances and power failures during this procedure. 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.

10.2 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.

10.3 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:
 Turn Off and unplug the Liebert GXT4 before cleaning it.
 Wear rubber gloves and boots.
 Clean the UPS with a dry cloth. Do not use liquid or aerosol cleaners.
 Never block or insert any objects into the ventilation holes or other openings of the UPS.
 Do not place the Liebert GXT4 power cord where it might be damaged.

10.4 Checking UPS Status

Emerson recommends checking the UPS operation status every six months.
 Check whether the UPS is faulty: Is the Fault Indicator on? Is the UPS sounding an alarm?
 Check whether 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 whether 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.

10.5 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 -> 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.
3. 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.
Liebert GXT4 UPS 5000VA ~ 10000VA (230V) User Manual
Chapter 10 Maintenance 35