Routine Maintenance

The Liebert UPStation S™ UPS should operate for years with minimum maintenance. Keep UPS clean and cool to enhance system reliability. Occasionally vacuum dust from around ventilation grilles and wipe UPS with a dry cloth. Do not use liquid or aerosol cleaning fluids.

Periodically check UPS operation by switching off utility power and observing the On Battery message. Do this with only non-critical loads connected to the unit.

Liebert UPStation S™ Specifications

SYSTEM

Safety Agencies

CSA 22.2, UL 1778 listed

Audible Noise

55 dBA at one meter

Transient/ Surge Protection

Per IEEE 587/ANSI C62.41 Class A&B

Efficiency

Minimum 87% at full load

PHYSICAL CHARACHTERISTICS (See

Site Planing Data for dimensions and weight)

Operating Environment

0 degrees C to 40 degrees C

Relative Humidity

0 to 95% relative humidity (non-condensing)

Altitude

5000 feet without derating

AC INPUT

 

Voltage Range

176 to 264 VAC

 

Single phase, 3-wire plus ground (L1-L2-N-G)

 

Single phase, 2-wire plus ground (L1-N-G)

Voltage Configuration and Connection

Three phase, 4-wire plus ground (L1-L2-L3-N-G) (8-18 kVA only)

 

Three phase, 3-wire plus ground (L1-L2-L3-G) (8-18 kVA only)

Frequency Range

45 Hz to 65 Hz

Current THD

5% THD maximum at full load

Power Factor

.98 typical

AC OUTPUT

 

Voltage Regulation

Typically less than +/- 2%

Voltage Distortion

Max. 3% THD for linear loads, max. 5% THD for full non-linear

 

loads

Transient Response

Less than +/- 5% for 100% step load; recovery to within 1% in 50

 

ms.

Frequency

50 Hz or 60 Hz

Frequency Slew Rate

1 Hz/sec (user-selectable 0.3 to 3 Hz/sec

Frequency Sync Rate

+/- 1 Hz (user selectable +/- 0.1 Hz to 5 Hz

Load Crest Factor

3:1

Overload

125% for 10 minutes, 150% 10 seconds

BATTERY

 

Type

Sealed, low maintenance, lead acid

Recharge Rate

10 times discharge duration to 95%

Battery Runtime

Minimum 10 minutes at full load

Battery Voltage

Nominal: 192 VDC Float: 220 to 230 VDC

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Liebert VM18000, VM12000 user manual Routine Maintenance

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.