Vertiv Liebert MC, Installer/User Manual

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8 INITIAL START-UP CHECKS
AND COMMISSIONING PROCEDURE
FOR WARRANTY INSPECTION
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, wearing appropriate, OSHA-approved PPE, who have been specially-
trained in the installation of air-conditioning equipment.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or
death. If control voltage is applied, the fan motor can restart without warning after a power
failure. Open all local and remote electric power-supply disconnect switches, verify with a
voltmeter that power is off, and verify that all fan blades have stopped rotating before working
on the fan assembly. After working on the fan assembly, remove any used tools or other
objects from the unit cabinet before restoring electric power.
• Confirm that all items on Checklist for Completed Installation on the previous page have been
done.
• Locate “Liebert MCV Warranty Inspection Check Sheet” in the unit’s electric panel.
(PSWI-8542-408CO).
• Complete “Liebert MCV Warranty Inspection Check Sheet” during start-up.
(PSWI-8542-408CO).
• Forward the completed “Liebert MCV 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.vertivco.com/en-
us/support/ or call 1-800-543-2778 for contacts.
Vertiv | Liebert® MCV™ Installer/User Guide | 24