Start the Liebert XDP with Liebert iCOM

5.2Starting the Liebert XDP with Liebert iCOM Controller

The Liebert XDP is started, stopped and controlled through the Liebert iCOM controller. Figure 24 shows the Liebert iCOM keypad.

1.Turn the Liebert XDP On with the user interface (I/O button). The factory-setting defaults Liebert XD module fans to On. When the Liebert XDP is turned On, the Liebert XD modules’ fans will turn On. Allow the system to attempt to start for at least 2 minutes.

If the Liebert XDP pump cannot maintain flow and continues to switch over due to starting difficulties, refer to 7.0 - Troubleshooting. After remedying the problem, proceed to Step 2.

2.If constant flow is established, wait until the Liebert XDP has been operating for 10-15 minutes, then verify that the refrigerant level in the receiver sight glass is between the second and third level (see Figure 71). Add or remove charge, if necessary.

3.Check pressure differential functionality:

The Liebert XDP system should be On. If it is Off:

a.Turn the Liebert XDP On via user interface (I/O button). The factory-setting defaults Liebert XD module fans to On. When the Liebert XDP is turned On, the Liebert XD modules’ fans will turn On.

If no “Loss of Flow” alarm is present—This suggests that there is flow. Test the pressure differential by closing the ball valve on either the suction line or discharge line to stop the flow.

This should prompt an alarm for “loss of flow on P1.” This alarm confirms that the switch has opened on low pressure (below 6 psi; 41kPa; 0.41 bars).

If a “Loss of Flow” alarm is present—This suggests that there is no flow. Verify that this is correctly annunciated by looking at the sight glass in the receiver. If a true no-flow condi- tion exists, the level will not move.

However, if there is flow, but the differential reading is faulty, the level will slowly drop, indicating flow, while the loss of flow alarm is annunciated.

Check the pressure differential physically by making sure that the electrical connections are properly connected. Then check the pressure differential electrically by making sure that the unit has 24VAC across it.

Figure 71 System R-134a liquid level at 160kW load

Operation above sight glass #3 can make the system operate erratically and reduce cooling capacity. Reduce charge to recommended level.

Recommended operating level

Acceptable operating level

Operation below sight glass #1 may cause loss of flow or cooling. Add charge to reach recommended level.

For lightly loaded systems, the recommended operating level is sight glass #2.

Sight Glasses 1, 2 & 3

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Image 71
Liebert XDP160RA, XDP160RM Starting the Liebert XDP with Liebert iCOM Controller, System R-134a liquid level at 160kW load
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XDP160RA, XDP160RC, XDP160RM specifications

The Liebert XDP series is an innovative line of uninterruptible power supplies (UPS) designed to safeguard critical IT equipment and ensure reliability in demanding environments. The XDP160RM, XDP160RC, and XDP160RA models are distinguished by their robust features and advanced technologies, making them ideal for data centers, server rooms, and telecommunications.

One of the standout features of the Liebert XDP series is its high power density. The XDP160RM, XDP160RC, and XDP160RA models provide 160 kVA of power in a compact design, occupying minimal floor space. This efficient design maximizes data center performance without compromising on reliability.

All three models utilize advanced digital signal processing (DSP) technology that enhances system performance and efficiency. The DSP technology ensures high efficiency rates, often exceeding 95% in online mode. This not only reduces energy costs but also minimizes heat output, contributing to a more sustainable operational environment.

The Liebert XDP series is equipped with multiple output configurations, allowing for versatile installation options. The modular architecture of the UPS systems allows for easy scalability to meet future power demands without the need for complete system replacement. This flexibility is crucial for businesses expecting growth or changes in IT infrastructure.

Another important aspect of the XDP160RM, XDP160RC, and XDP160RA is their advanced battery management systems, which optimize battery performance and longevity. The integrated smart battery charging technology prevents overcharging and extends battery life, ensuring that the UPS is always ready during power interruptions.

Additionally, the systems are designed with user-friendly interfaces that facilitate ease of monitoring and management. With real-time data on power usage, battery status, and overall system health, IT administrators can quickly address any issues that arise. The monitoring capabilities extend to remote access, enabling users to manage the UPS systems from virtually anywhere.

The Liebert XDP series also incorporates enhanced safety features, including fault detection and automated alerts, which further bolster reliability. With a strong commitment to maintaining uptime and safeguarding critical operations, the XDP models are a wise investment for any organization reliant on continuous power availability.

In conclusion, the Liebert XDP160RM, XDP160RC, and XDP160RA UPS systems are engineered to deliver exceptional power protection through high efficiency, advanced technologies, and user-friendly management features. These models are positioned to meet the rigorous demands of modern IT environments, ensuring that businesses can maintain operations without interruption.
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