System and Control Options

7.10Clear Alarms & Logs

The Clear Alarms & Logs menu allows you to clear active alarms or delete all records from either of the AC4’s alarm and event logs.

To clear alarms or logs:

Log In and Choose Clear Alarms & Logs

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter (see 7.1 - Login for help).

• Enter your password at the Login screen.

• From the System and Control Menu, use the arrows ↑↓ to choose Clear Alarms & Logs, then press Enter .

Use the following steps to clear alarms or delete log records.

7.10.1Clear Active Alarms

To clear all active alarms:

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Active Alarms, then press Enter .

Use the arrows ↑↓ to choose Y (Yes - clear all active alarms) or N (No - do not clear alarms), then press Enter .

NOTE

Clear active alarms is the only means to reset Latched alarms. This action must be taken to return Latched points to their

normal state. To set up a digital input as latched, see 7.3.4 - Set Up Alarmable Inputs in Latched or Unlatched Mode.

7.10.2Clear the Alarm Log

The alarm log contains up to 99 records of alarms that have occurred. You may want to clear the log after backing up the file or simply to free up space.

NOTE

Before deleting the records in the alarm log, you may want to back up the file to a computer, as described in 6.2 - Back Up Log Files (Service Terminal Interface only).

To delete all records from the alarm log:

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Alarm Log, then press Enter .

Use the arrows ↑↓ to choose Y (Yes - clear the alarm log) or N (No - do not clear the alarm log), then press Enter .

7.10.3Clear the Event Log

The event log contains up to 99 records of events detected by the AC4. You may want to clear the log after backing up the file or simply to free up space.

NOTE

Before deleting the records in the event log, you may want to back up the file to a computer, as described in 6.2 - Back Up

Log Files (Service Terminal Interface only).

To delete all records from the event log:

Main Menu

VIEW STATUS

> SYSTEM AND CONTROL

↑↓ =NEXT

=SELECT

Login

LOGIN

AAAA

↑↓ =SELECT =NEXT/END

System & Control Menu

SETUP SYSTEM

OVERRIDE OUTPUT

>CLEAR ALARMS & LOGS

↑↓ =NEXT =SELECT

Clear Alarms/Logs Menu

>CLEAR ACTIVE ALARMS CLEAR ALARM LOG

CLEAR EVENT LOG

↑↓ =NEXT =SELECT

Clear Active Alarms

CLEAR ACTIVE ALARMS ARE YOU SURE? N

↑↓ =Y/N

=END

Clear Alarms/Logs Menu

CLEAR ACTIVE ALARMS

>CLEAR ALARM LOG

CLEAR EVENT LOG

↑↓ =NEXT =SELECT

Clear Alarm Log

CLEAR ALARM LOG

ARE YOU SURE? N

↑↓ =Y/N

=END

Clear Alarms/Logs Menu

CLEAR ACTIVE ALARMS CLEAR ALARM LOG

>CLEAR EVENT LOG

↑↓ =NEXT =SELECT

Clear Event Log

CLEAR EVENT LOG

ARE YOU SURE? N

↑↓ =Y/N

=END

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Event Log, then press Enter .

Use the arrows ↑↓ to choose Y (Yes - clear the event log) or N (No - do not clear the event log), then press Enter .

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Liebert AC4 user manual Clear Alarms & Logs, Clear Active Alarms, Clear the Alarm Log, Clear the Event Log

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.

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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.