7 Maintenance
WARNING! Risk of electrical shock. Can cause property damage, injury, and death.
The unit has several circuits that are energized with high DC and AC voltages. Check for voltage with both
AC and DC voltmeters before making contact and before working within the UPS. Only properly trained and
qualified personnel wearing appropriate, OSHA approved PPE should prepare for installation, install, and
maintain the equipment. When performing maintenance with any part of the equipment under power, service
personnel and test equipment must stand on rubber mats.
WARNING! Risk of electrical shock. Can cause equipment damage, injury and death.
Before beginning installation, verify that all external overcurrent protection devices are open (Off), and that
they are locked out and tagged appropriately to prevent activation during the installation. After the power
cables are connected, the terminal block’s protective cover must be reinstalled to remove the electric shock
hazard.
WARNING! Risk of heavy unit falling over. Improper handling can cause equipment damage, injury, and death.
Exercise extreme care when handling unit cabinets and rack mounted units to avoid equipment damage or
injury to personnel. The UPS weighs between 1,041.1lb(460kg) and 1,3883.9lb(630kg) depending upon the
number of battery strings in the system. See Table 8.2 on page61, for the specific weights. Locate center of
gravity symbols and determine unit weight before handling. Test lift and balance the cabinets before
transporting. Maintain minimum tilt from vertical at all times. Slots at the base of the module cabinets are for
forklift use. Forklift slots support the unit only if the forks are completely beneath the unit.
7.1 Cleaning the UPS
Clean the UPS periodically, especially the ventilation holes, to ensure free air flow inside the UPS. If necessary, clean the UPS
with a vacuum cleaner or wipe with a dry cloth. Confirm that the ventilation holes are unobstructed.
7.2 Routine Maintenance
There are no user serviceable parts in the UPS. Attempting to service the unit yourself can void the warranty.
Any routine maintenance other than cleaning, must be performed by a Vertiv service technician. Visit
http://www.Vertiv.com/en-us/support/, or contact Vertiv representative.
7 Maintenance Proprietary and Confidential ©2023 Vertiv Group Corp. 57
Vertiv™ Liebert® EXS Installer/User Guide
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