Operation

5.0OPERATION

The Liebert iCOM display for your Liebert cooling unit features an easy-to-use, menu-driven liquid crystal display (LCD). All unit settings and parameters can be viewed and adjusted through three menus: User, Service and Advanced. All active alarms are displayed on the LCD and annunciated.

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 stand-alone unit or part of a network.

Pressing the On/Off key on a large display of a stand-alone cooling unit will control only that unit.

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

 

 

Remote On / Off

Display On / Off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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Emerson 3000/ITR manual Single Unit Functions, Operation, Unit/Fan Control Start Stop, Remote On / Off Display On / Off

3000/ITR specifications

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