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 (Operating): The cooling unit is in one of the following modes:

•On: The cooling unit is cooling.

•PreStart: The cooling unit is initializing and establishing communication with the controller. During PreStart, the valve of the cooling unit opens at 35%. The fans will start at 30% and stay on at that rate for 10 minutes.

•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 13.

Cool Outpt (Output): The actual cooling output of the cooling unit.

Cool Demnd (Demand): 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 (Maximum): The highest reading of the three rack inlet temperature sensors determines the rack temperature.

Power Source: The source of power to the cooling unit.

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

Fluid In: The temperature of the chilled water as it enters the cooling coil.

Fluid Out: The temperature of the chilled water as it leaves the cooling coil.

Fluid Flow: The amount of chilled water that flows through the cooling unit.

Fluid Vlv Pos (Fluid Valve Position): The position of the valve that controls how much chilled water enters the cooling unit.

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 (Differential Pressure): The filter differential pressure displayed in the Water column in inches or in pascals.

Sply Humid (Supply Humidity): The humidity of the air leaving the cooling unit.

24	InRow RC Operation and Maintenance Manual

ACRC501, ACRC502, ACRC500 specifications

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