Emerson Liebert iCOM, Manual

Page: 88 / 172

Teamwork
Liebert
®
iCOM
®
for Liebert DSE
™
80
4.3.6 Install Grounding Ring Connector in Electrical Panel
After installation, the grounding ring must be used to provide the final connection between the
CANbus cable and the metal frame of the unit. The grounding ring can use the same screw location
that the board grounding ring uses as shown in picture below. The panel comes terminated from the
factory and must be unterminated to allow adding sensors.
Connecting the CANbus sensors will require working in the high voltage electrical compartment of
the cooling unit.
Figure 58 Install grounding ring connector
!
WARNING
Risk of arc flash and electrical shock. Open all local and remote electric power disconnect
switches and wear appropriate personal protection equipment per NFPA 70E and verify with
a voltmeter that power is Off before working within the electric control enclosure. Failure to
comply can cause injury and death.
Before proceeding with installation, read all instructions, verify that all the parts are included
and check the name
®
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 control.
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 and verify with a voltmeter that power is Off. Refer to the unit electrical
schematic.
Follow all local codes.
Existing grounding
screw location to be
reused for CANbus
cable grounding ring.