Vertiv Liebert DSE Packaged 400, Инструкция по установке и эксплуатации

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16. Press the ENT button.
17. In the System Control configuration parameter, use the UP or DOWN arrow button to select 1 .
18. Press the ENT button.
The display flashes " 888 " if the command is accepted.
19. Press the ESC button to display C24 .
All fans should return to a normal speed based on the pressure input and the state of indoor unit’s compressor.
Notes on the Premium Efficiency Control Board
• J6 is the CANbus termination jumpers. If the condenser is the last device in the CANbus communication line,
the jumper must be placed between Pins 1 and 2 of J6. If the condenser is not the last device in the CANbus
communication line, then the jumper on J6 must be placed on Pins 2 and 3. CANbus communication errors
may occur if the jumpers are not in the correct positions.
• A jumper must be present at J2. If a jumper is not present, the control board will not boot properly during
power start-up.
8.9 Replacing the Premium Efficiency Control Board
Use these steps to replace the Premium Efficiency Control Board in the condenser.
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 factory-supplied disconnect switch is on the
exterior of the enclosure. 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.
8.9.1 Preparing to Replace the Board
1. Verify that the following jumpers are installed on the new board (see Figure 8.7 on the next page):
• Jumper at J4 and J6 on Pins 2 and 3.
• Jumper on J2.
• Jumper on J5 on Pins 1 and 2.
2. Locate the latest revision of the HMI parameters label, 303847P1, included with the new control board.
NOTE: In Figure 8.7 on the next page, J6 is the CANbus termination jumper. J4 is the RS485 service termination
jumper. If the condenser is the last device in the CANbus communication line, the jumper must be placed between
Pins 1 and 2 of J6. If the condenser is not the last device in the CANbus communication line, the jumpers on J6 must
be placed on Pins 2 and 3. If the jumper is not in the correct positions, CANbus communication errors may occur. The
jumper on J4 will always be placed between Pins 1 and 2.
NOTE: In Figure 8.7 on the next page, a jumper must be present at J2. If a jumper is not present, the control board
will not boot properly during power start-up.
8 Maintenance
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