Vertiv Liebert DSE Packaged Series - 7 Initial Start-Up Checks and Commissioning Procedure for Warranty Inspection

7 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 factory-supplied disconnect switch is on the
exterior of the enclosure. The factory-supplied, optional disconnect switch is inside the unit. The line side of
this switch contains live high-voltage. 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.
NOTICE
Risk of improper electrical connection of three-phase input power. Can cause backward compressor rotation
and unit damage. Service technicians should use a gauge set on the system during the initial start up to verify
that the three-phase power is connected properly. Three-phase power must be connected to the unit line
voltage terminals in the proper sequence so that the compressors rotate in the proper direction. Incoming
power must be properly phased to prevent compressors from running backward. We recommend checking the
unit’s phasing with proper instrumentation to ensure that power connections were made correctly. We also
recommend verifying discharge and suction pressures during start up to ensure that the compressors are
running in the correct direction.
• Confirm that all items on Checklist for Completed Installation on page29 have been done.
• Locate “Liebert® DSE™ Packaged Solution Warranty Inspection Check Sheet” in the unit’s electric panel.
• Complete “Liebert® DSE™ Packaged Solution Warranty Inspection Check Sheet” during start-up.
• Forward the completed “Liebert® DSE™ Packaged Solution 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 andCommissioningProcedure forWarrantyInspection
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