Operation with Advanced Microprocessor with Graphics Control

3.12.1View 24 Hour Run Time History

The history of each load for every hour during the past 24 hours is displayed in the run hour history. The percentage of each hour that the load was on is displayed from 0 to 100% in increments of 5% or 3 minutes. Loads with a variable output are displayed as a percentage of their capacity for an hour. For example, a variable load that is 50% on for 1/2 of the hour will be displayed as 25% on for that hour.

3.12.2View Total Run Hours

The total operating hours of all major components in the unit can be monitored from the display and are retained in nonvolatile memory. Run times are available for the following:

Compressor

GLYCOOL Coil (or Chilled Water Coil as used on Dual Cool Units)

Fan

Humidifier

Reheat 1 (or Hot Water Reheat or SCR Reheats)

Reheat 2

Heat Rejection

The component run hours for each individual component can be reset by selecting the run hours dis- play screen for the desired component, then pressing ENTER within 5 minutes of applying power to the control. The user will then be prompted to press ENTER to clear the selected component's run hours.

NOTE

Run hours for a component should be reset ONLY when the component has been replaced.

3.13Control Circuit board

The control circuit board is located inside the unit behind the LCD display and control key panel. Open the front panel for access to the board.

The control board includes an adjustment for LCD contrast, nonvolatile memory, DIP switches (which should not require customer changes), control output LEDs, and jumpers for board configuration. The jumpers should be placed as follows:

P5—removed

P12—removed

P19—installed on Pins 1 and 2

P47— installed on Pins 1 and 2

P48—installed on Pins 1 and 2

P50—all jumpers installed for 4-20 mA analog inputs. See 4.5.1 - Connecting the Analog Sen- sors for other configurations.

P51—removed

3.13.1LCD Contrast

The level of contrast due to the viewing angle of the LCD can be adjusted using a small thumb wheel at the upper left of the control board just under the cable going to the display. The control is labeled RA1.

NOTE

The LCD backlighting will turn on when any key is pressed and will go off 5 minutes after the last key is pressed.

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Liebert 3000 manual View 24 Hour Run Time History, View Total Run Hours, LCD Contrast

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.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

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.