Vertiv Liebert MC, Инструкция по установке и эксплуатации

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Figure 9.10 Jumper locations on Control Board
11.4.2 Installing the Replacement Board
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.
1. Turn Off the disconnect switch on the condenser enclosure cover.
2. Open the control enclosure cover.
3. Manually turn On the disconnect switch.
NOTE: Power is On and a shock hazard exists with exposure to hazardous voltage components.
4. If the board can still be powered up and has a display, record the parameter settings.
• To obtain parameters go to the
C--
menu and press the
UP
or
DOWN
arrow button to
read and record the values for C03-09 and C27.
Vertiv | Liebert® MCV™ Installer/User Guide | 48