Vertiv Liebert DSE Packaged 400, Инструкция по установке и эксплуатации

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NOTICE
Risk of improper power-supply connection. Can cause equipment damage and loss of warranty coverage.
Prior to connecting any equipment to a main or alternate power source (for example: back-up generator
systems) for start-up, commissioning, testing, or normal operation, ensure that these sources are correctly
adjusted to the nameplate voltage and frequency of all equipment to be connected. In general, power-source
voltages should be stabilized and regulated to within ±10% of the load nameplate nominal voltage. Also, ensure
that no three-phase sources are single-phased at any time.
NOTE: Do not assume that the fan blades will not start to spin. If the motor is in a fault condition, it will safely shut
down. Once the fault condition is cleared, there are certain conditions in which the motor will automatically resume
operation.
8.3.2 Fan Assembly Maintenance
Inspect the fan assembly at regular intervals. Keep the assembly clean and clear of dust, dirt, and other debris.
8.3.3 Blower Motor Lubrication
The motor is initially lubricated at the factory.
• Contact the motor manufacturer for the lubrication interval for motor bearings.
• Contact the motor manufacturer to determine the type of grease to use for lubrication.
8.3.4 Removing Fan Assembly
Do not attempt to remove the fan assemblies without first contacting Vertiv Technical Support at 1-800-222-5877.
8.4 Electronic Expansion Valve (EEV) Maintenance
The EEV controls superheat through the Liebert® iCOM™ controls by actively measuring suction pressure via a transducer
attached to the suction-line rotalock and suction temperature via a thermister strapped to the suction line. The EEV actively
adjusts the orifice size and resulting mass flow of refrigerant to maintain the superheat setpoint (set in Liebert® iCOM). The
EEV is used in place of the standard thermal expansion valve (TXV).
WARNING! Risk of electric shock. Can cause serious injury or death. The Liebert® iCOM 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. Open all local and remote electric power
disconnect switches and verify with a voltmeter that power is Off before working on any component of the
system.
NOTE: Intermittent loss of subcooling may result in EEV/superheat instability.
8.5 Compressor Maintenance
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of high-
pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or death. This
unit contains fluids and gases under high pressure. Use extreme caution when charging the refrigerant
system. Do not pressurize the system higher than the design pressure marked on the unit's nameplate.
Vertiv | DSE Packaged Solution Installer/User Guide
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