Liebert VM18000, VM12000 user manual Manual Off, Remote Emergency Power Off

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Maintenance Bypass Operation

on 3.5 - 6 kVA Units

The POD includes a Maintenance Bypass Switch that allows UPS removal for service or maintenance without interrupting power to the loads.

Transferring from UPS Operation to Maintenance Bypass Operation

1.Transfer UPS to manual bypass operation via switch SW1 on back of the UPS. The UPS beeps, indicating bypass operation. Press the Alarm Silence button to silence the beep.

2.With UPS in bypass, rotate the unit Maintenance Bypass Switch (SW2) to the ”Maintenance Bypass” position.

3.Press the UPS OFF Button twice. Utility power now supports the load. Leave the POD mounted on the UPS. Allow only qualified service personnel to

remove it. For UPS repair or maintenance, contact Liebert at 1-800-222-5877.

Transferring from Maintenance Bypass Operation to UPS Operation

1.Verify the UPS manual bypass switch (SW1) is in the ”bypass” position, and the UPS output circuit breaker is ON. (Turn the circuit breaker OFF and then ON to reset it.)

2.Reattach unit following the instructions in the 3.5-6 kVA Startup Checklist.

3.UPS begins start-up and the manual bypass alarm sounds. Silence the alarm.

4.Set the UPS manual bypass switch (SW1) to the ”UPS” position.

5.UPS display indicates ”Start up test warning: check messages”. Press the right arrow button. If ”Load on Manual Bypass” appears, turn the UPS ON by pressing the ON button twice.

6.Wait for the UPS display to indicate ”Normal Operation”. Set unit Maintenance Bypass switch (SW2) to the ”UPS” position. UPS now supplies controlled power to the loads.

System Shutdown

Manual Off

Pressing the OFF button twice removes power to the load by turning off the inverter and opening the bypass. The Output Circuit Breaker remains closed, even though output power is unavailable.

Pressing the OFF button twice disables Auto-Restart until you press the ON button, but control logic and battery charging remain active.

NOTE: Pressing the OFF button a third time displays a message prompting you to press the OFF button a fourth time. Pressing it a fourth time opens the Output Circuit Breaker at the rear of the unit.

Remote Emergency Power Off

Each unit includes a connector to facilitate Remote Emergency Power Off (REPO) from a customer-sup- plied switch. An optional switch with 50 feet of cable is available. Activating Emergency Off opens the Output Circuit Breaker and disables battery recharge.

UPS Alarms

See the alarm chart in the Appendix for alarm message meanings and corrective actions. Perform the corrective action described for a specific alarm. For assistance, contact Liebert at 1-800-222-5877.

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Contents UPStation S Page Page Remote Emergency Power Off Repo Cable Liebert UPStation S Site Planning Data Introduction Unloading the UPSOptional System Components Output InstallationKVA Start-up Checklist UPS accepts two-phase or three-phase power KVA Start-Up Checklist 18kVA Single Line DiagramLCD Display OperationControl / Display Panel Control ButtonsSee Options Configuration Setting Default ValueDisabled Table #2 Factory Default SettingsLCD Menu Tree Auto-Bypass On BatteryBattery Recharge Manual Restart after Manual OffManual Off Remote Emergency Power OffOptions Distribution Configurable Distribution CDLoad Modules Receptacle Voltage Circuit Configuration BreakerHardwire Load Module Standard Load ModuleOn-Line Standard Features Maintenance Bypass 8 18kVAWeights/Dimensions Approximate Weights in Pounds Model Number 125 175Test MaintenanceMounting InstallationKVA UPS Connections KVA Maintenance Bypass Connections Initial System Start-up OperationTransfer to On-Line from Test Transfer to Maintenance Bypass from On-LineTransfer to Test from Maintenance Bypass TroubleshootingSelect a Load Module Select a Time DelayGetting Started ∙ Programming ∙ Review ∙ Override ∙ Load LabelsLoads Power Management Programming Elements∙ Utility Failed ∙ Utility Restored ∙ Turn OFF load ∙ Turn on load ∙ Warning DelaysStep #1C Define Parameters Start ClosureStep #1A Step #1BSiteNet 1 Shutdown Interface Kits SiteNet 2 Power SurveillanceCables RS-232 with User-Configurable Relays VCR232CVBD121 8 12 kVA Standard External Battery CabinetsVBD061 3.5-6 kVA VBS061 / VBS062 6 kVARoutine Maintenance Appendix NEC Wire Gauge ChartMins UPStation S 6 kVA Battery Run Times #1 UPStation S 10 kVA Battery Run Times #1 UPStation S 18 kVA Battery Run Times #1 Alarm Messages, Meanings, and Corrective Actions Company Behind The Products UPStation S

VM18000, VM12000 specifications

The Liebert VM12000 and VM18000 are advanced precision cooling systems designed to provide reliable temperature and humidity control in critical environments such as data centers, telecommunications facilities, and industrial applications. These systems are engineered to meet the diverse needs of modern infrastructures that demand optimal performance, energy efficiency, and robust reliability.

One of the key features of the Liebert VM series is its high cooling capacity. The VM12000 offers a cooling capacity of 12,000 BTU/h, while the VM18000 provides an impressive 18,000 BTU/h. This makes both models ideal for environments where heat load is significant, ensuring that critical equipment remains within operational limits. The systems employ variable speed technology, allowing them to dynamically adjust cooling output based on real-time conditions, which enhances energy efficiency and performance.

The Liebert VM series is equipped with advanced control systems, including microprocessor controls that enable precise monitoring and adjustments. Users can easily access real-time data through intuitive interfaces, allowing for seamless management of cooling settings. Additionally, the systems can be integrated into building management systems (BMS), offering centralized control that enhances operational efficiency.

Another notable characteristic of the VM series is its modular design. This allows for easy scalability, making it suitable for both small setups and large, complex installations. The flexibility offered by the modular design permits the addition of cooling units as cooling demands grow, ensuring that users can keep pace with their evolving requirements.

In terms of energy efficiency, the Liebert VM12000 and VM18000 meet and exceed the efficiency standards set by the industry. The systems utilize R-410A refrigerant, which is environmentally friendly and contributes to higher energy performance. This focus on sustainability not only reduces the carbon footprint but also lowers operating costs, providing significant savings over time.

Furthermore, the Liebert VM series is built with robust components designed for durability and longevity. The systems are engineered for high performance in demanding conditions, ensuring reliability even in the most challenging environments.

Overall, the Liebert VM12000 and VM18000 precision cooling units stand out for their high capacity, energy efficiency, advanced controls, and modularity. These features make them a top choice for businesses needing reliable cooling solutions to protect their critical infrastructure while also promoting energy sustainability.
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