APC ACRD500 Installation Manual download pdf (Page 37)

29InRow RD Operation and Maintenance

View Status Readings

The display interface has several options for viewing the status of the cooling unit, the cooling group to

which the cooling unit belongs, and the environment being controlled. The status readings for the

cooling unit are available under the View Unit Status option in the main menu, and status readings for

the cooling group are available under the View Group Status option on the main menu or on the

scrolling status screens.

Scrolling status screens

When the display interface is idle, it scrolls through screens of status information. Press the up or down

arrow key to interrupt the automatic scrolling and view a specific status screen.

Cooling unit status

Path: Main > View Unit Status

View information specific to this cooling unit.

Op Mode. The cooling unit is in one of the following modes:

• On: The cooling unit is cooling.

• Standby: The cooling unit is receiving power but not enabled for cooling.

• Idle: The cooling unit is not operating in normal mode due to active alarms.

For more information, see “Idle On Leak” on page 19.

Cool Outpt. The actual cooling output of the cooling unit.

Cool Demnd. The amount of cooling that the heat load currently requires.

Supply Air. The average temperature of the air leaving the cooling unit, as measured by the upper and

lower supply air temperature sensors.

Return Air. The temperature of the air entering the cooling unit.

Max Rack In. The highest reading of the three rack inlet temperature sensors determines the rack

temperature.

Rack In #n. The temperature of the air entering the rack at the remote temperature sensor.

Air Flow. The amount of air required to maintain the setpoint temperature.

Fan Speed. The speed of the fans that regulate the air flow through the cooling unit.

Filter DP. The filter differential pressure.

Suct Pres (Suction Pressure). The pressure at the compressor inlet.

Disc Pres (Discharge Pressure). The pressure at the compressor outlet.

Compressor Drive: Speed. The compressor speed.

Compressor Drive: Power. The compressor power consumption.

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APC ACRD500 Installation Manual Page 37