Preparing for sensor-cabling of CRV300-mm(12-in.) units—CR019 and CR032
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local
and remote electric power supply disconnect switches and verify with a voltmeter that power is
off before working within any electric connection enclosures. 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.
1. Verify that all power entering the unit is disconnected.
2. Open the rear door on the back of the unit and remove the filters to access the unit-
disconnect switch.
3. Turn the High Voltage disconnect switch to Off.
4. Locate the 10-ft (3m) CANbus cable that shipped with the 2T sensors in the box on the unit
skid.
5. Determine whether routing through top or bottom of unit, and locate low-voltage field wiring
entry points, shown in Figure 9.6 on the facing page.
• Route the cable through the low-voltage-access, 7/8-in. knockout using the proper strain
relief.
• Once inserted through knockout, route the cable to the IntelliSlot bracket inside the unit.
Vertiv | Liebert CRV Installer/User Guide | 96
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