Liebert VM18000, VM12000 user manual Operation, Initial System Start-up

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OPERATION

The best way to initially test and start-up the unit is to do it without a load.

Initial System Start-up

∙Set the maintenance bypass rotary switch to the maintenance position. Set the meter switch to the Input L1-L2 position (units with meters)

∙Locate customer’s critical load breakers. Verify that all load breakers are in the off position. Close customer supplied feed breaker. Power is now flowing through the maintenance bypass as illustrated on page 19.

∙Verify the L1-L2, L1-N and L2-N input voltages, with a digital voltmeter (DVM), are as per the customer’s specifications. The UPS and maintenance bypass input and output voltages and frequency must be the same for the system to operate according to specifications.

∙Rotate the bypass switch to the Test position. Power is now flowing through the maintenance bypass as illustrated on page 19.

∙Close the UPS battery breaker and input breaker, in that order. The UPS should now be going through its normal testing and start-up procedure. Follow UPS LCD screen instructions.

∙After the output breaker is closed and the ON button is pressed, the unit should return to the Normal Operation screen. Proceed to the meter screen on the UPS LCD. Verify that the output voltage and frequency is the same as the input voltage and frequency.

∙With a DVM, verify that the there is no voltage difference between the following points in the bypass cabinet:

TB1 L1 to TB3 L1

TB1 L2 to TB3 L2

∙Return the UPS LCD to the Normal Operation screen. Transfer the UPS to bypass by placing the bypass/UPS switch on the back of the unit in the bypass position.

∙Again with a DVM, verify that the there is no voltage difference between the following points in the bypass cabinet:

TB1 L1 to TB3 L1

TB1 L2 to TB3 L2

∙Rotate the bypass switch to the On-Line position. Transfer the Liebert UPStation S™ to the UPS mode by placing the bypass/UPS switch on the back of the unit in the UPS position and pressing the ON button on the front of the unit. Power is now flowing through the maintenance bypass as illustrated on page 18.

∙The bypass switch is operating according to specifications if no problems occurred during the previous start-up steps.

∙Transfer the UPS to bypass by placing the bypass/UPS switch on the back of the unit in the bypass position. Verify the L1-L2, L1-N and L2-N output voltages, with a DVM, are as per the customer’s specifications.

∙The customer may now bring up their connected critical loads. Always energize the load on bypass, either UPS internal bypass or maintenance bypass.

∙After the load is up and operating, the UPS may now be transferred on-line. Transfer the Liebert UPStation S™ to the UPS mode by placing the bypass/UPS switch on the back of the unit in the UPS position and pressing the ON button on the front of the unit.

∙Power is now flowing through the maintenance bypass as illustrated on page 18. The load is protected by UPS power.

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Contents UPStation S Page Page Remote Emergency Power Off Repo Cable Liebert UPStation S Site Planning Data Optional System Components IntroductionUnloading the UPS 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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