SECTION 3 OPERATION

3.1OPERATOR CONTROLS

Operation of the LBS has deliberately been kept as simple possible. There are only three controls and five indicator lights on the SERIES 300 LBS Controller enclosure. Each LBS equipped UPS module has one indicator light mounted on the bezel below the front display panel. The indicators are:

A.LBS Enabled. Indicates that the LBS circuitry is in the Automatic Mode.

B.System Non-Sync.Indicates that the DSS is no longer in sync with the DMS. This alarm will appear during the transition from internal bypass sync to DMS sync.

C.LBS Active. Indicates that the LBS circuitry has taken over the sync of the UPS. If the System Non-Sync indicator is also on, it means that synchronization is in progress.

D.Load 1 Sync to Load 2. Indicates that the UPS critical bus is synchronized to the bypass input of the DMS, in this case System 2. This indicator will turn on when the sync process is complete.

E.Load 2 Sync to Load 1. Indicates that the UPS critical bus is synchronized to the bypass input of the DMS, in this case System 1. This indicator will turn on when the sync process is complete.

F.

Warning LBS Active. This indicator is located on the bezel below the front display panel

 

on each UPS module. This indicator will be flashing when the DSS is acquiring sync with

 

the DMS. This is a warning, not to operate the Main Rotary Switch.

Standard LBS controls are:

A.Mode Select Switch. Provides manual selection of automatic operation or “OFF” modes. In the automatic mode the LBS will be enabled. In the “OFF” mode, both UPS modules will synchronize independently.

B.Master Select Switch. Provides manual selection of the DMS source. The LBS circuitry will automatically switch DMS sources should the initially selected DMS lose bypass input.

C.Lamp Test. Push this button to test the indicators lights on the LBS Controller. There is no lamp test for the warning indicators on the UPS modules.

3.2OPERATOR PROCEDURES

The only two operator controls are the Mode Select Switch and the Master Select Switch. The Mode Select Switch can be left in the Automatic position all the time. The OFF position can be selected at times when it is desirable to allow the UPS systems to synchronize independently.

The Master Select Switch allows the operator to chose which UPS bypass source will provide the reference sync signal.

In normal operation, both System 1 and System 2 will be functioning and the LBS Mode Select Switch will be in the Automatic position. The LBS enable indicator and one of the Load X Sync to Load Y indicators will be illuminated. If the two UPS systems drift out of sync (while on battery for example), the LBS Active and System Non Sync indicators will be illuminated. The Load X Sync to Load Y

Series 300 Load Bus Synchronization

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DISCONTINUED

 

PRODUCT

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Liebert 300 manual Operator Controls, Operator Procedures
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300 specifications

The Liebert 300 is a high-performance precision cooling unit designed specifically for critical environments such as data centers, telecommunications facilities, and server rooms. This system ensures optimal temperature and humidity control, which are crucial for maximizing the performance and longevity of sensitive electronic equipment.

One of the main features of the Liebert 300 is its advanced cooling technology. It employs a direct expansion (DX) cooling system, which provides efficient cooling without the need for extensive ductwork. This design allows for easy installation and retrofitting in existing facilities. In addition, the unit is equipped with variable-speed compressor technology, enabling it to adjust cooling output based on real-time demands. This capability dramatically increases energy efficiency while maintaining the ideal operating conditions for critical equipment.

The Liebert 300 also incorporates intelligent controls and monitoring systems. With embedded microprocessor controls, users can manage and customize settings via a user-friendly display interface. Real-time monitoring of temperature, humidity, and airflow ensures that any fluctuations are promptly addressed. This system is also compatible with building management systems (BMS) to provide comprehensive oversight of all environmental conditions.

In terms of energy efficiency, the Liebert 300 meets or exceeds the latest industry standards, such as ASHRAE and ISO. Its eco-friendly refrigerants help reduce environmental impact, aligning with sustainability goals. Additionally, it features advanced heat recovery options, allowing for the reuse of thermal energy for heating processes or hot water generation.

The design of the Liebert 300 emphasizes not only performance but also reliability. Built with durable materials and robust construction, this unit is engineered to operate continuously under demanding conditions. Regular maintenance is simplified through its modular structure, allowing for easy access to components that may require servicing or replacement.

Overall, the Liebert 300 represents a comprehensive solution for precision cooling needs, integrating cutting-edge technology with user-focused design and energy-saving features. Its capability to adapt to changing environments and workloads makes it an essential component in maintaining the integrity and performance of critical infrastructure in today's technology-driven world. Whether for new installations or upgrades, the Liebert 300 stands out as a premier choice for ensuring optimal climate control in mission-critical applications.
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