Operation with Advanced Microprocessor with Graphics Control

Auto Restart Delay

This feature allows for the unit to restart automatically after a loss of power. The programmed value is .1 minute (6 seconds) intervals. A programmed value of zero (0) would require the user to manually press the ON/OFF switch to start the unit, i.e. no auto restart. The purpose of this feature is to pre- vent several units from starting at the same time after a loss of power. The message “Restart Delay -- Please Wait” will be displayed when the system is in the auto restart mode. Liebert suggests pro- gramming multiple unit installations with different auto restart times.

IR Flush Overfill (infrared humidifiers only)

An autoflush system automatically controls a water makeup valve to maintain proper level in the infrared humidifier water pan during humidifier operation. If humidification is needed and 30 hours have elapsed since the last time the humidifier was on, then the humidifier is held off until the valve completes an initial fill of the humidifier pan. This pre-fill is about 15 seconds. The valve continues to fill and flush the pan for about 4 minutes.

During humidifier operation, with the flush rate set at the default of 150%, the valve is opened peri- odically to add water to the pan (about 40 seconds for every 9-1/2 minutes of humidifier operation). This adds enough water to the pan to cause about a third of the total water used to be flushed out the overflow standpipe located in the humidifier pan. This flushing action helps remove solids from the pan. The flush rate is adjustable from 110% to 500%. If the water quality is poor, it may be desirable to increase the water flushing action above the normal 150% rate. Also, if the supply water pressure is low, the flush rate adjustment can be increased so that sufficient water level is maintained during humidification.

Chilled Water/Hot Water/Econ-O-Coil Flush

This feature will flush the respective coil for 3 minutes after the programmed number of hours of non-use. For example, if the flush time is programmed with 24 hours on a hot water reheat type sys- tem, and heating is not required for a 24 hour period, the hot water valve will be opened for 3 minutes to allow the coil to be flushed. The programmed value can be from 0 (no flush) to 99 (99 hours of non-use).

Display in Degrees

The control can be set to display readings and setpoints in either degrees Fahrenheit (F) or Celsius (C).

Default Settings and Ranges

The following table lists the setup functions, their factory default values, and the allowable ranges for which they can be programmed.

Table 9

Setup functions, default values and ranges

 

 

 

 

 

Function

Default

Range

 

 

 

Cold Start Time Delay*

3

0 to 3 min (0 = no delay)

 

 

 

Restart Time Delay

0.1

0 to 9.9 min (0 = manual restart)

 

 

 

Infrared Fill Rate

150

110 to 500%

 

 

 

Chilled/Hot Water Coil Flush

24

0 to 99 hrs (also Econ-O-Coil)

 

 

 

C/F Degrees

F

C or F

 

 

 

 

*Factory set to 0 for water cooled, glycol, and GLYCOOL units.

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Liebert 3000 Auto Restart Delay, IR Flush Overfill infrared humidifiers only, Chilled Water/Hot Water/Econ-O-Coil Flush
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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.
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