WARNING! Risk of electric shock. Can cause serious injury or death. Building and equipment damage may also
result. Open all local and remote electric power supply disconnect switches and verify that power is off with a
voltmeter before working within any electric connection enclosures. The Liebert® iCOM™ 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 Liebert® iCOM™ controller.
Installation, service, and maintenance work must be performed only by properly trained and qualified
personnel and in accordance with applicable regulations and manufacturers’ specifications. Opening or
removing the covers to any equipment may expose personnel to lethal voltages within the unit even when it is
apparently not operating and the input wiring is disconnected from the electrical source.
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only properly
trained and qualified personnel wearing appropriate, OSHA approved PPE should attempt to move, lift,
remove packaging from, or prepare the unit for installation.
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Wear
appropriate OSHA approved personal protective equipment (PPE) when attempting to move, lift, remove
packaging from, or prepare for installation.
CAUTION: Risk of heavy unit falling into defective raised floor. Can cause injury and equipment damage. Prior
to installation, all floor tiles immediately around the floorstand are to be removed and inspected. Make sure
tiles are not cracked, and ribs have not been cut. If free from defects, re-install. Replace with new tiles if
defects are found.
CAUTION: Risk of excessive refrigerant line pressure. Can cause equipment damage or injury resulting from
tubing and component rupture. Do not close off the refrigerant line isolation valve for repairs unless a
pressure relief valve is field installed in the line between the isolation valve and the check valve. The pressure
relief valve must be rated 5% to 10% higher than the system design pressure. An increase in ambient
temperature can cause the pressure of the isolated refrigerant to rise and exceed the system design pressure
rating (marked on the unit nameplate).
CAUTION: Risk of contact with hot surfaces. Can cause injury. Personal burn injury can be the result of
touching a compressor, refrigerant discharge lines, and some electrical components that are extremely hot
during unit operation. Allow sufficient time for them to cool to a touch-safe temperature before working
within the unit cabinet.
Use extreme caution and wear appropriate, OSHA-approved PPE when working on or near hot components.
CAUTION: Risk of improper piping installation, leak checking, fluid chemistry, and fluid maintenance. Can
cause injury. Building and equipment damage may also result. Installation and service of this equipment
should be done only by qualified personnel who have been specialized training for liquid cooling equipment
and who are wearing appropriate, OSHA-approved PPE.
1 Important Safety Instructions Proprietary and Confidential ©2024 Vertiv Group Corp. 3
Vertiv™ CoolPhase CDU Installer/User Guide
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