160 AK2-SC 255 Reference Manual RS.8D.M1.22
Press one of the arrow keys, and you will see that this condition moves from item to
item on the menu. You are moving the SC 255’s cursor.
To select from any SC 255 menu, first use the arrow keys to move the cursor to the
item you want (the cursor will only land on areas where action is possible), then press
the ENTER key. You can use the EXIT key to reverse your steps one at a time.
Let’s assume that you press ENTER with the cursor on Refrigeration. You will
move to the next level, which is the Refrigeration menu, where all of the configured
racks are listed. At right, below, is the refrigeration menu. Depending on the installa-
tion, your refrigeration menu many be different.
In this menu, there is some status information displayed (the current suction pressure
and, for reference, the target suction pressure). Since there is more than one rack
being controlled by this SC 255, the cursor can be moved between racks. If there
were only one rack, only one selection that could be made. After selecting a rack,
press ENTER and the rack Menu appears as at right above:
Each Rack subsystem is shown on the menu with a corresponding icon. There are
also menu items for system functions like Alarms. There’s a Rack Service item that
offers special functions for maintenance technicians, and a Configure Rack selec-
tion for adding or modifying configuration, either of equipment or of control strategy.
Now, let’s look at one of these items. With the cursor on Suction Groups, pressing
ENTER brings up a screen that lists the suction groups on the rack.
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