Vertiv™ | Liebert® EXM
™
50-250kVA, 480V, 60Hz User Manual | 9
2.0 INSTALLATION
This section describes the Liebert
®
EXM
™
’s environmental requirements and mechanical
considerations that must be taken into account when planning the positioning and cabling of the
UPS equipment.
Because each site is unique, this section presents a guide to general procedures and practices
that should be observed by the installing engineer, rather than step-by-step installation
instructions.
NOTICE
Risk of improper installation. Can cause equipment damage.
Do not apply electrical power to the UPS equipment before the commissioning engineer arrives at the
installation site.
The UPS must be installed by a properly trained and qualified engineer in accordance with the
information contained in this chapter. All the equipment not referred to in this manual is shipped with
details of its own mechanical and electrical installation information.
2.1 Initial Inspections
1. While the Liebert
®
EXM
™
and ancillary cabinets are still on the truck, inspect the equipment and shipping
container for any signs of damage or mishandling. Do not attempt to install the system if damage is
apparent. If any damage is noted, file a damage claim with the shipping agency immediately and contact
Vertiv
™
Services at 800-543-2378 to inform them of the damage claim and the condition of the equipment.
2. Compare the contents of the shipment with the bill of lading. Report any missing items to the carrier and
your local Vertiv
™
representative immediately.
3. Check the product label on the back of front door and confirm the contents match the UPS model,
capacity and main parameters that were ordered.
2.1.1 Storing the UPS and Batteries for Delayed Installation
If the Liebert
®
EXM
™
system will not be installed immediately, it must be stored indoors in a clean,
dry and cool location (see 7.2 - UPS Environmental Requirements). If the UPS includes
batteries, either internally or in a battery cabinet, the batteries’ requirements will dictate the
storage conditions. Batteries should be unpacked, installed and charged as soon as possible after
delivery.
NOTICE
Risk of failure to properly charge batteries. Can cause permanent damage to batteries and void the
warranty.
Batteries will self-discharge during storage. Batteries must be recharged as recommended by the battery
manufacturer.
A notice of “Charge Before Date” is affixed to each unit that has batteries inside. The “Charge Before
Date” is calculated based on the batteries being stored at 77°F (25°C). Storage at a higher temperature
will increase the rate of self-discharge, requiring earlier recharge. Consult the battery manufacturer on
how to determine when the batteries need to be recharged.
NOTE
Three-phase, three-wire input power is required.
NOTE
Input power must be supplied to the Liebert
®
EXM
™
from a properly grounded Wye source. The
Liebert
®
EXM
™
is not for use with impedance grounded systems, corner-grounded systems or
high-leg Delta systems. For these applications, an isolation transformer must be installed
between the input power and the Liebert
®
EXM
™
.
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