Important Safety Instructions; Save These Instructions - Emerson Liebert Challenger iCOM 3000 Operation & Maintenance Manual

I S
MPORTANT AFETY

SAVE THESE INSTRUCTIONS

This manual contains important safety instructions that should be followed during the installation
and maintenance of the Liebert Challenger 3000 with Liebert iCOM
before attempting to install or operate this unit.
Only qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions and installation, operating and safety instructions on the unit and in
this manual. Follow all operating and user instructions.
WARNING
!
Arc flash and electric shock hazard. Open all local and remote electric power disconnect
switches, verify with a voltmeter that power is off and wear personal protective clothing per
NFPA 70E before working within the electric control enclosure. Failure to comply can cause
injury or death.
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 iCOM microprocessor 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.
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 explosive discharge from high-pressure refrigerant. Can cause injury or death.
This unit contains fluids and gases under high pressure. Relieve pressure before working with
piping.
WARNING
!
Risk of refrigerant system rupture or explosion from overpressurization. Can cause
equipment damage, injury or death.
Local building or plumbing codes may require that a fusible plug or other type of pressure
relief device be installed in the system.
For systems requiring EU CE compliance (50Hz), the system installer must provide and
install a discharge pressure relief valve rated for a maximum of 500psig (34bar) in the high
side refrigerant circuit. Do not install a shutoff valve between the compressor and the field
installed relief valve. The pressure relief valve must be CE certified to the EU Pressure
Equipment Directive by an EU "Notified Body."
NOTE
The compressor has a factory-installed high pressure safety switch in the high side refrigerant
circuit. A pressure relief valve is provided with Liebert Lee-Temp
local building code to determine if the Liebert Fan Speed Control and VFD condensers will
require field-provided pressure-relief devices. A fusible plug kit for Liebert FSC and VFD
condensers is available for field installation.
I
NSTRUCTIONS
® . Read this manual thoroughly
1
™
condensers. Consult your
Liebert ® Challenger 3000
™