Troubleshooting

Table 14 Troubleshooting the Liebert XDP (continued)

Symptom

Possible Cause

Check or Remedy

Motor Burnout

Check control panel for welded

Replace defective components.

contactor contacts or welded

 

overload contacts

 

Main 24VAC Fuse Trips

Shorts or loose connections

Check the wiring connections of the 24 VAC circuit.

Faulty circuit board

Replace the circuit board.

 

 

R-134a pump loop overcharged

While pump is running R-134a receiver level must be within

Unstable Pump

R-134a pump loop undercharged

recommended levels (see Figure 71).

Operation

 

 

Filter dryer clogged

See Clogged Filter Dryer and/or Impeller symptom and

 

remedy.

 

 

 

 

 

 

Liebert XDP is Off

Check status of the Liebert XDP at the user interface. Turn

 

system On at I/O button if system is Off.

 

 

 

 

Check temperature and relative humidity (RH) of room. Lower

 

High dew point

RH setpoint if necessary to lower dew point. At normal room

 

temperature of 68°F (20°C), the RH should be set to 50% or

 

 

Room Becomes

 

lower.

 

 

 

Check Liebert XD cooling modules to make sure that they are

Too Warm

Liebert XD cooling modules are Off

On before starting the Liebert XDP.

 

 

 

Minimum room temperature setpoint

Check the setpoint in the User Setpoints menu (see

 

is too high

Figure 43).

 

Temperature/humidity sensors

Place the sensor on the return air side of the primary air mover

 

(eg., Liebert DS). Do not install the sensor near unsealed

 

incorrectly placed

 

doors, windows or similar areas.

 

 

 

 

 

Reduced Chilled Water

Clogged strainer

Clean or replace strainer

 

 

Fouled heat exchanger (no strainer

 

Flow Rate

Replace heat exchanger and install 20-40 mess strainer

 

installed)

 

Increased Refrigerant

Clogged strainer

Clean or replace strainer

Fouled heat exchanger (no strainer

 

Temperature

Replace heat exchanger and install 20-40 mess strainer

 

installed)

 

70

Page 76
Image 76
Liebert XDP160RC, XDP160RM, XDP160RA user manual See Clogged Filter Dryer and/or Impeller symptom

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.