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For information on how to control SNMP access to the cooling unit, see “SNMP” on page 46. InRow RC/RD/RP (600 mm) User’s Guide Types of user accounts The cooling unit has three levels of access (Administrator, Device User, and Read-Only User), all of which are protected by user name and password requirements. • An Administrator can use all of the management menus available in the control console and the Web interface. The Administrator’s default user name and password are both apc. • A Device User (Device Manager in the control console) can access only the Log option in the Events menu and use the Group, Unit, and Alarms menus. The Device User’s default user name is device, and the default password is apc. • A Read-Only User has the following restricted access: – Access through the Web interface only. – Access to the same menus as a Device User, but without the capability to change configurations, control devices, or delete data. Links to configuration options may be visible but are disabled, and the event log displays no Clear Log button. – The Read-Only User’s default user name is readonly, and the default password is apc. To set User Name and Password values for the Administrator, Device User, and Read-Only User accounts, see “Setting user access” on page 32. You must use the Web interface to configure values for the Read-Only User. InRow RC/RD/RP (600 mm) User’s Guide How to Recover from a Lost Password Use a local computer, a computer that connects to the cooling unit through the serial port, to access the control console. 1. Select a serial port at the local computer and disable any service that uses that port. 2. Connect the configuration cable (APC part number 940-0103 and extension, if required, 9401000A) to the selected port on the computer and to the serial port at the cooling unit (use the DB9 connector on the front of the electrical panel). Note: Do not touch components on the electrical panel, other than the service port. 3. Run a terminal program (such as HyperTerminal) and configure the selected port as follows: • 9600 bps • 8 data bits •no parity • 1 stop bit • no flow control 4. Press ENTER on the computer, repeatedly if necessary, to display the User Name prompt. 5. If you are unable to display the User Name prompt, verify the following: – The serial port is not in use by another application. – The terminal settings are correct as specified in step 3. – The correct cable is being used as specified in step 2. 6. Switch the main breaker to OFF. Wait one second. Switch the main breaker to ON. Note: If you wait too long to return power to the cooling unit, you must repeat step 5. 7. Press ENTER as many times as necessary to redisplay the User Name prompt, then use the default, apc, for the user name and password. (If you take longer than 30 seconds to log on after the User Name prompt is redisplayed, you must repeat step 5 and log on again.) 8. From the Control Console menu, select System, then User Manager. 9. Select Administrator, and change the User Name and Password settings, both of which are now defined as apc. Select Accept Changes to store the new user name and password values. 10.Press CTRL+C, log off, reconnect any serial cable you disconnected, restart any service you disabled. InRow RC/RD/RP (600 mm) User’s Guide Display Interface LEDs Status This LED indicates the status of the cooling unit. Condition Description Off The cooling unit has no power. Solid Green The cooling unit is receiving power. Flashing Green The cooling unit is receiving a firmware upgrade. Check log When yellow, this LED indicates that at least one new critical alarm, warning alarm, or event has occurred since the last time the event log was viewed from the display interface. Warning alarm When yellow, this LED indicates that a warning alarm condition exists and may require your attention to prevent it from deteriorating into a critical state. A new alarm will cause a beep every 30 seconds until you silence the alarm by pressing any function key. Critical alarm When red, this LED indicates that a critical alarm condition exists and requires your immediate attention. An audible alarm beeps every 30 seconds. Press any function key to silence the audible alarm. Watchdog Features Overview To detect internal problems and recover from unanticipated inputs, the cooling unit uses internal, system- wide watchdog mechanisms. When it reboots to recover from an internal problem, a System: Warmstart event is recorded in the event log. Network interface watchdog mechanism The cooling unit implements internal watchdog mechanisms to protect itself from becoming inaccessible over the network. For example, if the cooling unit does not receive any network traffic for 9.5 minutes (either direct traffic, such as SNMP, or broadcast traffic, such as an Address Resolution Protocol [ARP] request), it assumes that there is a problem with its network interface and restarts. Resetting the network timer To ensure that the cooling unit doe...

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