Troubleshooting

Under normal conditions (no leaks), the LT300 probes create an open in-line switch. When a leak is detected (alarm condition), the switch closes.

To determine whether the LT300 is working properly, perform the fol- lowing test:

1.Provide one lead of a 24VAC source to the LT300 orange wire. Con- nect one lead of an AC voltmeter to the LT300 brown wire and the second lead of the AC voltmeter to the second lead of the 24VAC source.

2.Read the AC voltmeter to check that there is less than 1VAC. (Some leakage may occur; otherwise, it will be 0VAC.)

•0VAC indicates the water-sensing probes create an open switch.

•24VAC indicates the water-sensing probes create a closed switch.

If there is 24VAC at this point, the sensor is not working properly. For assistance, contact your Liebert representative or the Liebert Technical Support/Service Group.

If there is less than 1VAC, continue to Step 3.

3.Connect a jumper between the two sensor probes or place the probes in water to create an alarm condition (closed switch).

4.Read the AC voltmeter to check that there is 24VAC.

If there is 24VAC, the LT300 sensor is working properly.

If there is less than 1VAC, the sensor is not working properly. For assistance, contact your Liebert representative or the Liebert Technical Support/Service Group.

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.