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2. Operation
2.1 Controller Overview
The RM100 controller is designed to monitor and control the supply of cooling water to IT equipment
in unattended data centre environments. Secondary circuit cooling water is closely controlled to a
defined temperature and at a controlled differential pressure (or flow rate), for optimum management
of heat rejection.
When power is first applied to the unit, the touchscreen will illuminate, and the pump drive will
energize. After a short initialisation period, the display will default to the Home screen, as shown below.
2.2 User Interface
2.2.1 HOME Screen
The Home screen displays a schematic representation of the CDU, showing essential temperatures,
pressures, flows etc. for both Primary & Secondary circuits, plus the product code identification, installed
software version and date/time.
RM100-Version 1.6
Start/Stop icon –
changes to red when
unit is stopped
Pressing the Menu icon in the bottom right hand corner will display the following Main Menu screen...
2.2.2 Main MENU Screen
The Menu screen displays further accessible sub-menus for an increased level of information and
alteration of certain parameters.
NOTICE! Some Control System menus may not be visible if the user has not Logged-in
and visibility will also depend on the Log-in access level used.
The touchscreen display has been designed to be intuitive and any user should be able to easily negotiate
through the various menus without the need for this guide. However, the following explanation is
available for additional information, or as a reference for when the user is not in front of the unit.
CDU Operating & Maintenance Guide
Neptune DWC RM100 in-rack Coolant Distribution Unit
Fig.3 – Control System Home screen
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