7 INITIAL START-UP CHECKS
ANDCOMMISSIONINGPROCEDURE
FORWARRANTYINSPECTION
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply
disconnect switches, verify with a voltmeter that power is Off and wear appropriate,
OSHA-approved personal protective equipment (PPE) per NFPA 70E before working within the
electric control enclosure. Failure to comply can cause serious injury or death. Customer must
provide earth ground to unit, per NEC, CEC and local codes, as applicable. Before proceeding
with installation, read all instructions, verify that all the parts are included and check the
nameplate to be sure the voltage matches available utility power. The Liebert® controller does
not isolate power from the unit, even in the “Unit Off” mode. Some internal components require
and receive power even during the “Unit Off” mode of the controller. The only way to ensure
that there is NO voltage inside the unit is to install and open a remote disconnect switch. Refer
to unit electrical schematic. Follow all local codes.
WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment
damage, serious injury or death. Installation and service of this equipment should be done only
by qualified personnel who have been specially-trained in the installation of air-conditioning
equipment and who are wearing appropriate, OSHA-approved PPE.
CAUTION: Risk of smoke generation. Can cause fire suppression and alarm system activation,
resulting in injury during building evacuation and mobilization of emergency fire and rescue
services. Start-up operation of optional electric reheat elements can create smoke or fumes
that can activate the facility alarm and fire suppression system. Prepare and take appropriate
steps to manage this possibility. Before beginning initial start-up checks, make certain that unit
was installed according to the instructions in this manual. All exterior panels must be in place.
• Confirm that all items on Checklist for Completed Installation on page29 have been done.
• Locate “Liebert® CW Warranty Inspection Check Sheet” in the unit’s electric panel.
• Complete “Liebert® CW Warranty Inspection Check Sheet” during start-up.
• Forward the completed “Liebert® CW Warranty Inspection Check Sheet” to your local sales
office. This information must be completed and forwarded to validate warranty.
• Contact your local sales representative or technical support if you have any questions or
problems during unit start-up and commissioning. Visit https://www.Vertiv.com/en-us/support/
or call 1-800-222-5877 for contacts.
7 Initial Start-up Checks andCommissioningProcedure ForWarrantyInspection
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