7.3 Precautions
Although the Liebert GXT4 is 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 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 GXT4.
• Do not place the GXT4 power cord where it might be damaged.
7.4 Checking UPS Status
We recommend 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?
• 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 Vertiv™ representative or Technical
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 Vertiv™
representative or Technical Support.
7.5 Checking UPS Functions
NOTE: UPS function check procedures may interrupt power supply to the connected load.
We recommend checking the UPS functions once every 6months.
Back-up the load data before conducting the UPS functions check. Procedures are as follows:
1. Press the Standby/Manual Bypass button to check whether the alarm and indicators are
normal.
2. Press the On/Alarm Silence/Manual Battery Test button to check again whether the indicators
are On and the UPS is operating normally.
3. Press the On/Alarm Silence/Manual Battery Test button for three seconds after Inverter Mode.
The UPS should initiate battery self-test. Check to determine whether the battery is operating
normally. If not, stop and contact your Vertiv™ representative or Technical Support.
Vertiv | Liebert GXT4 Installer/User Guide | 52
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