Emerson 250-400kVA manual Battery Safety Precautions

Page 41

Maintenance

3.4.1Battery Safety Precautions

Servicing of batteries should be performed or supervised by personnel knowledgeable of batteries and the required precautions. Keep unauthorized personnel away from batteries.

When replacing batteries, use the same number and type of batteries.

! WARNING

Risk of electric shock, explosive reaction, hazardous chemicals and fire. Can cause equipment damage, personal injury and death.

Lead-acid batteries contain hazardous materials. Batteries must be handled, transported and recycled or discarded in accordance with federal, state and local regulations. Because lead is a toxic substance, lead-acid batteries must be recycled rather than discarded.

Do not dispose of battery or batteries in a fire. The battery may explode.

Do not open or mutilate the battery or batteries. Released electrolyte is harmful to the skin and eyes. It is toxic.

! WARNING

Risk of electrical shock and high short circuit current. Can cause equipment damage, personal injury and death.

The following precautions must be observed when working on batteries:

•Remove watches, rings and other metal objects.

•Use tools with insulated handles.

•Wear rubber gloves and boots.

•Do not lay tools or metal parts on top of batteries.

•Disconnect charging source prior to connecting or disconnecting battery terminals.

•Determine whether the battery is grounded. If it is grounded, remove source of ground. Contact with any part of a grounded battery can result in electrical shock. The likelihood of such shock will be reduced if such grounds are removed during installation and mainte- nance.

Lead-acid batteries can present a risk of fire because they generate hydrogen gas. In addition, the electrical connections must be protected against accidental short circuits which can cause sparks. The following procedures should be followed:

•DO NOT SMOKE when near batteries.

•DO NOT cause flame or spark in battery area.

•Discharge static electricity from body before touching batteries by first touching a grounded metal surface.

•After replacing battery jars in a battery cabinet, replace the retaining straps that hold the jars in place on the shelves. This will limit accidental movement of the jars and connectors should the cabinet ever need to be repositioned or relocated.

Regular maintenance of the battery module is an absolute necessity. Periodic inspections of battery and terminal voltages, specific gravity and connection resistance should be made. Strictly follow the procedures outlined in the battery manufacturer’s manual, available on the manufacturer’s Web site.

Valve-regulated lead-acid (sealed-cell) batteries do require periodic maintenance. Although mainte- nance of electrolyte levels is not required, visual inspections and checks of battery voltage and connec- tion resistance should be made.

NOTICE

Risk of equipment damage. Batteries should be cleaned with a dry cloth or a cloth lightly moistened with water. Do not use cleaners on the batteries. Solvents can make the battery cases brittle.

35

Page 40 Page 42
Image 41
Page 40 Page 42
Contents Liebert NXL Contacting Liebert for Support Battery Cabinet PrecautionsTable of Contents Specifications Figures Page Important Safety Instructions Modes of Operation Normal ModeGeneral Description Battery Mode Bypass ModeMaintenance Bypass OptionsIntroduction Main component locations FeaturesMimic display Monitor/mimic display example Utility fail Monitor/mimic display example Normal power flowMonitor/mimic display example Load on bypass, UPS On Menu tree Touchscreen Navigation Main Display ScreenRating Parameters Configurations Menu RatingSystem Settings parameters User SettingsAdjustable setpoints parameters Adjustable SetpointsCell Count Adjustment Startup Menu Event ManagementStatus Reports Menu Shutdown menu Shutdown MenuTransfer Menu Transfer/retransfer commandsTime remaining display Battery Management MenuDisplay summary see Figure Metering ResetHelp SilenceLoad on bypass, UPS available OK to TransferInput power fail, load on battery Input Power Failure-Load on BatteryEmergency Module Off Off BatteryRemote Emergency Power Off Manual ProceduresStartup Procedure Startup commands Transfer Procedure Load Transfer ProceduresRe-Transfer Procedure Maintenance Bypass Load TransfersMaintenance Bypass Load Transfers-If Load is on UPS Bypass UPS Shutdown Procedure Shutdown ProceduresSystem Shutdown Procedure Automatic OperationsCurrent-versus-time curves of overload capacity Automatic Transfers to Bypass Overload ConditionAutomatic Retransfers to UPS Automatic Transfers to Bypass, UPS System FaultsSafety Precautions Routine Maintenance Liebert ServicesAir Filters Record LogUPS component service life Battery MaintenanceLimited Life Components Component Expected Life ReplaceBattery Safety Precautions Battery retorque values Matching Battery Cabinets-OptionalBattery voltage, nominal and float Detecting Trouble Torque specifications, unless otherwise labeledRack-Mounted Batteries Torque RequirementsCorrective Actions Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Environmental specifications Battery OperationParameter Specification Environmental ConditionsBattery & DC Parameters Electrical specificationsLiebert NXL Model Size 250 Input ParametersPhysical Parameters & Standards, in mm Liebert NXL Model SizeSystem Parameter Specifications Event Message Event Definition Recommended Action Liebert NXL alarm and status messagesObserve 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 Iti Ne tTi n That
Top Page Image Contents