Water Cooled Models

4.3.2High Pressure Valve - 350 psig (2413 kPa) System for 3 Ton Units (Metrex Valve) Adjustment

The valve may be adjusted using a 1/8" diameter rod. Turn the adjusting collar nut counterclockwise to raise head pressure; turn it clockwise to lower head pressure. Rotation directions are viewed from top of valve spring housing.

Figure 14 Metrex Valve adjustment

Adjusting collar nut

Table 12 Refrigerant control settings psi (kPa)

Low Pressure

Low Pressure

High Pressure

Cut Out

Cut In

Cut Out

 

 

 

20 (137.9)

65 (448.2)

360 (2482)

 

 

 

Manual Flushing

The valve may be flushed by rotating the socket head screw clockwise. This screw must be in the OUT position (counterclockwise) for normal valve operation.

4.3.3Testing Valve Function

When the refrigeration system has been off for approximately 10-15 minutes, the water flow should stop.

Should the water continue to flow, the valve is either improperly adjusted or the pressure sensing capillary is not properly connected to the condenser.

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Liebert 3000 installation manual Testing Valve Function, Adjusting collar nut

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.