Operation
5.0OPERATION
The Liebert iCOM display for your Liebert cooling unit features an
The control is shipped from the factory with default selections for all necessary settings. Adjustments can be made if the defaults do not meet your requirements.
References to menu items in this manual are followed by the main menu and the submenu where they can be found.
For example:
•Temperature Setpoint (User Menu, Setpoints) - The Temperature Setpoint parameter is located in the User menu under the Setpoints submenu.
•High Return Humidity (Service Menu, Set Alarms) - The High Return Humidity alarm is located in the Service menu under the Set Alarms submenu.
5.1Single Unit Functions
5.1.1Unit/Fan Control Start - Stop
Unit On means the fan output is activated. The unit can be switched On and Off from two inputs:
•Remote On/Off input
•Display button
Pressing the On/Off key on a small display will control only the cooling unit it is connected to regard- less, of whether the cooling unit is a
Pressing the On/Off key on a large display of a
The effect of pressing the On/Off key on a large display connected to a network depends on the view: System or Unit.
•In System view, pressing the On/Off key shows a warning asking for confirmation to shut down the entire system.
•In Unit view, pressing the On/Off key affects only the unit being viewed, without a confirmation request.
Each time a unit is powered On or Off, an event is added to the Event Log in the User menu.
NOTE
Customer switches: remote On/Off (if used) and display On/Off switches are in series. A cooling unit will start only if both switches are On; if one of these switches is Off, the unit will stop. Safety devices within the unit are also in series and will shut the unit down if required.
Figure 20 Start-stop priority switches
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NOTE
If Remote On/Off is not used, a jumper is inserted to bypass the switch.
Unit auto restart will begin once the control has booted.
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