Emerson 250-400kVA manual Liebert Services, Routine Maintenance

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Maintenance

3.2Liebert Services

Startup, UPS maintenance, battery maintenance and training programs are available for the Liebert NXL UPS through your Liebert sales representative.

3.2.1Professional Startup

UPS Startup—Liebert’s Customer Engineers perform a thorough non-powered inspection of the units and will then conduct a complete electrical checkout. The battery installation is also inspected and placed on an initialization charge to ensure cell equalization. Customer Operation training will be conducted during battery charge time.

Load bank testing and full site acceptance testing are additional services that can be performed dur- ing a UPS startup. One preventive maintenance service call can be added to the initial UPS startup agreement.

Battery Installation/Startup—When purchased with a UPS Start-Up, this Agreement provides consistent, professional service for your entire UPS system. This one-source approach avoids conflicts that may occur during a multisource installation. Note that Liebert requires a mandatory installation inspection for all batteries not installed by Liebert Customer Engineers.

Battery IEEE Certification Inspection - The Battery Specialist will perform a detailed inspection of the entire battery system to ensure it meets current IEEE standards.

Maintenance Agreements: The Signature Program

UPS Service Agreements—Liebert Services (LGS) has a variety of available maintenance agree- ments, depending on specific site needs. Choose the level of support appropriate for each installation.

Mission-critical sites can have the standard parts-and-labor, around-the-clock coverage for their UPS, with or without scheduled preventive maintenance visits. Other sites can benefit from a variety of money-saving options.

Liebert recommends two preventive maintenance visits per year for the UPS. The first can be con- ducted with the UPS operational and includes an infrared scan of key UPS components.

The annual visit will require taking the UPS off-line for a thorough non-powered inspection.

These visits are in addition to the general housekeeping tasks (changing air filters, etc.) that can be performed by customer personnel.

Battery Service Agreements—The same flexible Signature Program can also be applied to con- tracts for battery maintenance. Again, the coverage needed will depend on the type of battery pur- chased and the degree of support required from Liebert Services.

Training

Customer training courses include the proper operation of the system, emergency procedures, preven- tive maintenance and some corrective maintenance.

Warranties

Contact Liebert Services if you have any questions regarding the warranty on your Liebert NXL UPS or the batteries.

3.3Routine Maintenance

You should become thoroughly familiar with the equipment, but at no time should you go beyond the specific procedures in this manual while performing maintenance or correcting a malfunction.

If you have any doubt as to what must be done, call Liebert Services at 1-800-LIEBERT for further instructions.

NOTE

Service and maintenance work must be performed only by properly trained and qualified personnel and in accordance with applicable regulations as well as with manufacturers’ specifications.

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Contents Liebert NXL Battery Cabinet Precautions Contacting Liebert for SupportTable of Contents Specifications Figures Page Important Safety Instructions Modes of Operation Normal ModeGeneral Description Maintenance Bypass Bypass ModeBattery Mode OptionsIntroduction Features Main component locationsMimic display Monitor/mimic display example Normal power flow Monitor/mimic display example Utility failMonitor/mimic display example Load on bypass, UPS On Touchscreen Navigation Main Display Screen Menu treeConfigurations Menu Rating Rating ParametersUser Settings System Settings parametersAdjustable Setpoints Adjustable setpoints parametersCell Count Adjustment Startup Menu Event ManagementStatus Reports Menu Shutdown Menu Shutdown menuTransfer/retransfer commands Transfer MenuBattery Management Menu Time remaining displayDisplay summary see Figure Help ResetMetering SilenceOK to Transfer Load on bypass, UPS availableInput Power Failure-Load on Battery Input power fail, load on batteryOff Battery Emergency Module OffManual Procedures Remote Emergency Power OffStartup Procedure Startup commands Re-Transfer Procedure Load Transfer ProceduresTransfer Procedure Maintenance Bypass Load TransfersMaintenance Bypass Load Transfers-If Load is on UPS Bypass System Shutdown Procedure Shutdown ProceduresUPS Shutdown Procedure Automatic OperationsAutomatic Transfers to Bypass Overload Condition Current-versus-time curves of overload capacityAutomatic Transfers to Bypass, UPS System Faults Automatic Retransfers to UPSSafety Precautions Liebert Services Routine MaintenanceRecord Log Air FiltersLimited Life Components Battery MaintenanceUPS component service life Component Expected Life ReplaceBattery Safety Precautions Battery retorque values Matching Battery Cabinets-OptionalBattery voltage, nominal and float Rack-Mounted Batteries Torque specifications, unless otherwise labeledDetecting Trouble Torque RequirementsCorrective Actions Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Parameter Specification Battery OperationEnvironmental specifications Environmental ConditionsLiebert NXL Model Size 250 Electrical specificationsBattery & DC Parameters Input ParametersPhysical Parameters & Standards, in mm Liebert NXL Model SizeSystem Parameter Specifications Liebert NXL alarm and status messages Event Message Event Definition Recommended ActionObserve the One-Line Display. If the input line is Observe the One-Line Display. To identify which Do not Attempt to Close CB3 Until Reset Displayed on the Module Output Meter. If UPS controls monitor the DC Bus positive Resolve the issue that precipitated the EPO Check the One-Line Display for system status UPS, to transfer back to Inverter If this alarm occurs on an operational unit, it Attempt to manually close the disconnect by Module Output Meter. If the load is less than Output Power Factor. If the displayed power factor Until a service visit has been made and action taken When manual transfers are enabled Under normal conditions, no user action is required Observe the One-Line Display and the Active Event If the command to terminate Regeneration Mode If the alarm cannot be reset, or if the alarm condition UPS Alarm and Status Messages UPS Alarm and Status Messages Page Ti n Ne tIti That
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