Vertiv | Liebert CRD10 | User Manual
iv
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during the installation and
maintenance of the Liebert CRV. Read this manual thoroughly before attempting to install or operate
this unit.
Only qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions, notices and installation, operating and safety instructions on the unit
and in this manual. Follow all installation, operation and maintenance instructions and all applicable
national and local building, electrical and plumbing codes.
Any operation that requires opening doors or equipment panels must be carried out only by properly
trained and qualified personnel.
To identify the unit model and serial number for assistance or spare parts, locate the identification
label on the unit.
A warning label on the front and back panels reminds users that:
• the Liebert® CRV restarts automatically
• the ma
in switch must be opened before opening the internal compartments for any operation.
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 over-pressurization of the refrigeration system. Can cause explosive discharge of
high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or
death. This unit contains fluids and gases under high pressure. Use extreme caution when charging
the refrigerant system. Do not pressurize the system higher than the design pressure marked on the
unit's nameplate.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death.
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 in the unit cabinet or
on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a
power failure.
