Liebert Wiring Diagram and Troubleshooting for Air Conditioners
Page 45

5.2Troubleshooting

Table 39 provides a list of the problems that may occur on the Helios DC System 4000/48, along with their possible causes. Blown fuses and tripped circuit breakers should always be investi- gated before utilizing Table 39.

Table 39 Fault diagnosis

Fault symptom

Possible causes

 

 

No DC output current

Open AC circuit breaker

 

Open DC circuit breaker

 

Faulty connection between the power shelf and the rectifier (Helios

 

Rectifier 100/48)

 

Faulty connection between the rectifier and the power plant

 

Sense leads opened

 

 

Incorrect indication of the DC

Incorrect meter calibration

output current

Loose shunt leads connection

 

 

Low float voltage

Faulty rectifier(s)

 

Shorted battery cell(s)

 

Prolonged power failure

 

Incorrect float voltage adjustment

 

Sense leads opened

 

 

Low recharge voltage

Incorrect float voltage adjustment

 

Discharge load greater than the rectifier’s capacity (batteries are

 

recharging or the system is in manual bypass)

 

Sense leads opened

 

 

High float or recharge voltage

Faulty rectifier(s)

 

Incorrect Float/Equalize adjustment

 

 

Failure to generate alarms

Incorrect connections between the controller and the rectifiers and

during alarm conditions

distribution panels

 

 

Failure to generate cabinet

Faulty LP fuse on the controller (F31)

alarm during minor or major

Faulty cabinet alarm lamp

alarm conditions

Faulty or loose connection

 

 

 

Failure to generate RFA alarm

Faulty rectifier

under appropriate conditions

Faulty wiring

 

Faulty RFA LED

 

 

Failure to generate FA alarm

Faulty wiring

 

Faulty fuse

 

Faulty FA LED

 

Loose connection

 

 

HV lamp lit

High discharge voltage condition

 

Incorrect HV level adjustment

 

 

LV lamp lit

Low discharge voltage condition

 

Incorrect LV level adjustment

 

 

HF lamp lit

High discharge voltage condition

 

Incorrect HF level adjustment

 

 

LF lamp lit

Low discharge voltage condition

 

Incorrect LF level adjustment

 

 

FA lamp lit

Blown fuse or extended FA alarm

 

 

CFA lamp lit

Blown charge fuse

 

 

DFA lamp lit

Blown distribution fuse

 

 

RECT MIN lamp lit

One rectifier has failed

 

 

RECT MAJ lamp lit

Two or more rectifiers have failed

 

 

RECT FAN lamp lit

Defective rectifier fan(s)

 

 

Maintenance 39

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Contents Helios DC System 4000/48 Page Table of Contents Maintenance OperationReference Documents 7.0 List of Terms Figures Tables Applicability of This Document Purpose of This DocumentRectifier cabinets Main cabinet Aux dist. cabinet DescriptionApplications Control and Distribution cabinet 1200A Rectifier cabinet Control and Distribution Cabinets Typical ConfigurationsControl and distribution cabinets Rectifier cabinetsAuxiliary distribution cabinets Rectifier Cabinet Capacity Type Qty Cabled top or bottomElectrical Specifications of the Cabinets Mechanical Specifications of a CabinetMechanical specifications of the cabinet empty Framework type Height Depth Width WeightElectrical Specifications of the Conventional Controller Mechanical Specifications of the Conventional ControllerMechanical specifications of the Conventional Controller Height Depth Width WeightMechanical specifications of the fuse panels Fuse Panels Mechanical specifications of the fuse panelsDistribution Panels Fuse sizes available for the 20 QFF 0-5 a fuse panelsFront view of the 16 QFF 0-5 a & 6 TPN 5-30 a fuse panels Front view of the 16 QFF 0-5 a & 12 ABS 5-30 a fuse panelsFuse sizes available for the 4 RS100P 70-100 a fuse panels Fuse sizes available for the 8 TPN 5-30 a fuse panelsFuse sizes available for the 4 TPL 225-600 a fuse panels DC power TPLFuse sizes available for the 18 TPS 1-70 a fuse panel DC power TPSElectrical specifications of the fuse panels Electrical specifications of the fuse panelsMechanical specifications of the circuit breaker panels Fuses Busbar Panel number Quantity CapacityNominal CPC Std Trip CPC Mid Trip Current Front view of the 24 Plug-In 1-100 a circuit breaker panelNominal current Front view of the 4 70-250 a circuit breaker panelFront view of the 2 400 a circuit breaker panel Electrical specifications of the circuit breaker panels Electrical specifications of the circuit breaker panelsExternally Mounted Battery Return Busbar Mechanical specifications of a single laminationLength Width Thickness Perspective view of the a terminating assemblies Terminating Assemblies OptionalShelf model Height Depth Width Weight MPS300 and MPA100 Power ShelvesElectrical Specifications of the Power Shelves Mechanical specifications of the Helios Rectifier 100/48Rectifiers Electrical specifications of the Helios Rectifier 100/48 Electrical specifications of the Helios Rectifier 100/48Front view of the Helios Rectifiers 200I/48 and 200E/48 Standards Total harmonicDistortion THD Mechanical Specifications 600 a and 1200 a Battery Disconnect Unit OptionalElectrical Specifications Mechanical specifications of the Helios Monitor 3000/48Mechanical Specifications of Fully Equipped Power Cabinets Overall Power System SpecificationsMechanical specifications of the AC junction box Mechanical specifications of fully equipped power cabinetsElectromagnetic compliance EMC Environmental Specifications OperatingElectrostatic discharge ESD immunity TransportationVisual indicators Visual indicatorsGeneral Front PanelAlarm Description Transmitted alarmsPotentiometers PotentiometersDIP switches SwitchesSwitches DIP switch modulesTest points FusesFuse Test pointsTerminal blocks Rear PanelTB3 TB4 TB1 TB2 Connectors Rectifiers 600 a and 1200 Battery Disconnect Units Optional Cleaning Helios Monitor 3000/48 Controller and RectifiersCalibration Storage Fan unit replacement Air filter replacementFault diagnosis TroubleshootingAddition or Replacement of a Rectifier Addition / Replacement ProceduresAdding a Helios Rectifier 200I/48 or 200E/48 Adding a Helios Rectifier 100/48AC connections in a Helios Rectifier 200E/48 Cover Rect Replacing a Helios Rectifier 100/48 Replacing a RectifierReplacing a Helios Rectifier 200I/48 or 200E/48 Removal of the old string Adding or Replacing a Battery StringReplacement of a Distribution Fuse Block or Circuit Breaker Replacing a Cabinet Alarm LampReplacing a distribution circuit breaker Manual No Description Reference DocumentsDC or dc AC or acFt-lb GRD or GrndPsi In.-lbList of Terms Technical Support 1500, 3000, 4000 & 6000 a DC Power System
Related manuals
Manual 76 pages 7.19 Kb Manual 76 pages 48.63 Kb

1500, 6000 A, 4000, 3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

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The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.
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