Liebert AC4 user manual Turn Standby Testing On or Off, Specify Failed Standby Response

Models: AC4

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System and Control Options

7.8.2Turn Standby Testing On or Off

Standby testing permits scheduling an automatic operational check of devices in Standby mode.

When this feature is activated (ON), the AC4 tests all devices in Standby mode by putting each device in operating mode for a designated time. You may specify the time of day the testing begins, the dura- tion of the test and the interval between tests. Standby testing is OFF (deactivated) by default.

To change the standby testing settings:

• From the Setup System Operation Menu, use the arrows ↑↓ to choose Standby Testing, then press Enter .

• In the Change Standby Testing screen, press Enter to edit Standby Testing, then use the arrows ↑↓ to choose ON to activate or OFF to deactivate the standby testing feature. Press Enter .

Select the desired interval for how frequently the testing should occur in the Every 03 Days field. The default is 3 days; valid entries range from 0 to 99 days.

• For each digit, use the arrows ↑↓ to choose a number from 0 to 9, then press Enter to advance to the next digit.

When finished, press Enter to configure the time of day.

Specify the time of day the test should begin in the At 00:00 field. The format is HH:MM for hours and minutes.

Use the arrows ↑↓ to choose from available entries for hours (00-23), then press Enter to advance to minutes.

Setup Operation Menu

AUTO SEQUENCING OFF

> STANDBY TESTING OFF FAILED STANDBY N ↑↓ =NEXT =SELECT

HOLD DELAY

:

10:00

RESTART

:

00:06

Change Standby Testing

>STANDBY TESTING ON EVERY 03 DAYS

AT 00:00 FOR 10 MIN

↑↓ =NEXT

=EDIT

Use the arrows ↑↓ to select minutes (00-59).

When finished, press Enter again.

Specify the duration of the test in minutes—the length of time the standby units will be turned

On—in the For 10 Min field. Use the arrows ↑↓ to choose a number from 0 to 59 minutes. The default is 10 minutes.

When finished, press Enter .

7.8.3Specify Failed Standby Response

The AC4’s Failed Standby feature determines what happens when an operating device fails and a standby device then becomes an operating unit. A subsequent alarm in the newly operating unit (previously the standby device) results in either restarting the previously operating device that was alarmed or not. This feature specifies whether each device remains in its current state or returns to its previous state of operation.

When this feature is activated (Y), each device returns to its previous state, as Table 19 shows: the newly enabled Standby device is dis- abled and the previously operating device is returned to Operating mode. The default setting is N (deactivated), meaning that each device remains in its current state: the Standby device remains enabled and the previously operating unit remains disabled.

Table 19 Failed Standby response

Failed Standby

Previous Standby Device

Previously Operating

Setting

(alarm after being enabled)

Device

 

 

 

Activated (Y)

Disabled

Returned to Operating mode

 

 

 

Deactivated (N)

Remains enabled

Remains disabled

 

 

 

To change the Failed Standby settings:

• From the Setup System Operation Menu, use the arrows ↑↓ to choose Failed Standby, then press Enter .

• In the Change Failed Standby screen, press use the arrows ↑↓ to choose Y to activate or N to deactivate the feature.

• Press Enter .

Setup Operation Menu

AUTO SEQUENCING OFF STANDBY TESTING OFF

> FAILED STANDBY

N

 

 

↑↓ =NEXT

=SELECT

 

 

 

 

 

 

 

HOLD DELAY

: 10:00

 

 

RESTART

 

: 00:06

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Change Failed Standby

 

> FAILED STANDBY

N

 

 

↑↓ =NEXT

 

=END

 

 

 

 

 

 

 

 

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Liebert AC4 Turn Standby Testing On or Off, Specify Failed Standby Response, Change Standby Testing, Change Failed Standby

AC4 specifications

The Liebert AC4 is a highly advanced cooling solution designed for critical environments, such as data centers and telecommunications facilities. As data demands rise and IT equipment generates significant heat, an effective cooling system is paramount to maintaining optimal performance and reliability. The Liebert AC4 stands out in this space, offering a blend of efficiency, flexibility, and innovative technology.

One of the main features of the Liebert AC4 is its adaptability to various configurations and applications. It can be deployed in both hot aisle and cold aisle containment setups, making it versatile for different data center designs. This flexibility allows facilities to implement cooling strategies that align perfectly with their specific layouts and operational requirements.

The Liebert AC4 employs cutting-edge, variable-speed fans that enhance energy efficiency. These fans adjust their speed according to the cooling load, ensuring that the system operates at peak efficiency while significantly reducing energy consumption. This feature is essential in critical environments, where minimizing operational costs is often as important as maintaining optimal temperatures.

In addition to energy-efficient cooling, the Liebert AC4 integrates advanced monitoring and control technologies. With built-in intelligence and compatibility with the Liebert SiteScan monitoring system, users can ensure real-time visibility into their cooling operations. This monitoring capability enables data center managers to make informed decisions and swiftly address any cooling anomalies, minimizing the risk of overheating and downtime.

Furthermore, the system is designed to be easy to install and maintain, reducing downtime during setup and upkeep. The modular design allows for scalability, enabling organizations to expand their cooling capabilities as their needs grow.

The Liebert AC4 also features a robust construction that enhances reliability and durability, making it an ideal choice for environments where equipment uptime is critical. Its streamlined design not only optimizes airflow and cooling distribution but also contributes to aesthetic considerations in professional settings.

In conclusion, the Liebert AC4 combines efficiency, versatility, and advanced technologies to deliver a reliable cooling solution for modern data centers and critical facilities. Its variable-speed fans, flexible configurations, and advanced monitoring capabilities position it as a leader in the competitive field of cooling solutions, ensuring that critical equipment remains operational and efficient. Organizations looking to enhance their cooling strategies will find the Liebert AC4 to be an invaluable asset in today’s fast-paced digital landscape.