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Neptune DWC RM100 in-rack Coolant Distribution Unit
2.2.11 CALIBRATION Screen
The touchscreen will enter calibration mode if the screen is pressed 20 times within a 4 second interval.
To complete calibration follow the on screen instruction`s.
2.3 Automatic Operation
After commissioning, the unit will be ready to run in automatic mode – press the Start/Stop icon button
on the display 'Home' screen (see Section 2.2.1), then select the ON button as below.
When the ON button is pressed, the icon on the Home screen will change from Red to Green and
providing the fluid level & static pressure are healthy, either main pump P1 or P2 (pump with the least
run hours) will start to increase in speed. Animated arrows will show on the Home screen to signify
the fluid circuit is operational and the pump speed as a percentage of maximum will be displayed.
2.3.1 Secondary Circuit Operation
Secondary Circuit Static Pressure
The system pressure at the CDU inlet (PS1) is continuously monitored (see page 3 of Status screen) to
ensure that the system is always pressurized.
- If, on initial start-up, the system pressure is below the default 0.8Bar (12PSI) static pressure at
PS1, then the main pump will not be permitted to run and a 'Fill Required' will be raised, as
indicated below.
CDU Operating & Maintenance Guide
Fig.13 – Control System Calibration screen
Fig.14 – Control System On/Off Button
Fig.15 – Fill Required Warning
Page
Press to start the unit
21
Fill Pump Required
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