User manual

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Liebert
®
iCOM
®
88
4.3.7 Install Grounding Ring Connector in Electrical Panel
After installation, the grounding ring (Part #300245G1) 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 CAN bus sensors will require working in the high voltage electrical compartment of
the cooling unit.
Figure 76 Install grounding ring connector
!
WARNING
Risk of electrical shock. Can cause injury and death.
Disconnect local and remote power supplies before working within.
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. Refer to the unit electrical schematic.
Follow all local codes.
Existing grounding
screw location to be
reused for CANbus
cable grounding ring.