How to resolve T5 Primary Temperature Sensor Fault on Lenovo Server?
A T5 Primary Temperature Sensor Fault on your Lenovo Server means the reading from the Primary return temperature sensor T5 is outside the normal range of 5 to 74°C (41 to 165°F) or disconnected. Check sensor connections to the control board, check in-line connections, replace sensor.
What to do if Lenovo Neptune DWC RM100 shows a leak fault or water make-up empty?
If your Lenovo Server indicates a leak fault or the water make-up is empty, it could be because the fill pump has been running for more than 1 minute while the level sensor is activated, but the minimum system pressure level hasn't been reached. Check that the make-up water container is full, the tubes are free of air locks, the container is properly connected, and the fill pump is operational. Also, inspect the system for leaks.
Why does my Lenovo Neptune DWC RM100 shut down due to a leak or insufficient water?
A leak shutdown or insufficient water issue in your Lenovo Server can occur if the level sensor is not activated, the fill pressure hasn't been achieved, and the fill pump has been running for more than 1 minute. Verify that the water make-up container is correctly connected (or the filling wand is fully immersed, if used). Check the system for leaks. Ensure there is no trapped air in the fill pump hoses and the system is fully vented. Confirm that the auto air vents are open.
What to do if Lenovo Neptune DWC RM100 Server shows Secondary Temp T2c Diff Fault?
Secondary Temp T2c Diff Fault on your Lenovo Server means the difference between Secondary temp. sensor T2c is more than default 1°C (2°F) adrift from T2a & T2b. Check T2c sensors against the temperature sensor resistance chart in Section 2.7 and replace if faulty.
Why am I getting a T3 Room Temperature Sensor Fault on my Lenovo Neptune DWC RM100 Server?
A T3 Room Temperature Sensor Fault on your Lenovo Server indicates that the reading from the Room temperature sensor T3 is outside the normal range of 5 to 74°C (41 to 165°F) or disconnected. Check sensor connections to the control board, check in-line connections, replace sensor.
How to resolve PS2 Secondary Pressure Sensor Fault on Lenovo Neptune DWC RM100?
A PS2 Secondary Pressure Sensor Fault on your Lenovo Server indicates that the reading from the Secondary filter outlet pressure sensor PS2 is outside the normal range of -1 to 8 bar (- 15 to 116 PSI). Check sensor connections to the control board, check in-line connections, replace sensor.
What to do if Lenovo Neptune DWC RM100 Server detects water (internal leak)?
If your Lenovo Server detects water, indicating an internal leak, it means the leak tape in the unit drip tray has detected a substantial water leak. Identify and repair the leak.
How to troubleshoot Pump 1 Communications Fault on Lenovo Neptune DWC RM100?
A Pump 1 Communications Fault on your Lenovo Server indicates that the controller is unable to communicate with the Pump 1 speed controller. Check all cables & connections. Replace pump.
What causes PS3 Secondary Pressure Sensor Fault in Lenovo Neptune DWC RM100 Server?
A PS3 Secondary Pressure Sensor Fault on your Lenovo Server means that the reading from the Secondary supply pressure sensor PS3 is outside the normal range of -1 to 8 bar (-15 to 116 PSI). Check sensor connections to the control board, check in-line connections, replace sensor.
How to resolve secondary over pressure alarm on Lenovo Neptune DWC RM100?
A secondary over pressure alarm on your Lenovo Server indicates that the pressure at PS3 has increased above the set value of 6Bar (87PSI). The most likely cause will be excessive heat build-up in the system, or a breach between the Primary and Secondary circuits within the plate heat exchanger. Check for High Temp alarms, relieve pressure at the drain point. Remove heat exchanger and replace.
Conformance to Low Voltage, EMC, and Pressure Equipment directives.
Certification of compliance with EU RoHS Directives for product materials.
Company registration as an ISO 9001:2015 certified entity for Quality Management.
Warnings, cautions, and guidelines for safe operation, handling, and maintenance.
Precautions for high-voltage connections, replacement parts, and responsible waste management.
Basic characteristics and operational purpose of the RM100 Coolant Distribution Unit (CDU).
Identification of key components through front and rear views of the unit.
Overview of the controller, its interface, and navigation through various screens.
Accessing and modifying unit parameters via Setup and Configuration menus.
Advanced operations including service, diagnostics, and calibration procedures.
Automatic operation, circuit control, temperature control loop tuning, and sensor data.
Viewing active alarms, understanding alarm codes, and troubleshooting steps.
Routine cleaning, leak checks, and fluid requirements for primary/secondary circuits.
Scheduled maintenance activities, required tools, and checks.
Procedure for removing, cleaning, and reinstalling the secondary filter unit.
Catalog of available spare parts with part numbers and descriptions for ordering.
Electrical schematics detailing CDU connections, components, and power distribution.
Diagram illustrating the fluid circuit layout and flow paths of the RM100 CDU.
Details on product warranty, after-sales service, and manufacturer contact information.
Guidelines for responsible decommissioning and disposal of the unit according to regulations.
General| Product Name | Lenovo Neptune DWC RM100 |
|---|---|
| Category | Server |
| Cooling | Direct Water Cooling |
| Server Type | Rack |
| Cooling Technology | Direct Water Cooling |
| Processor Support | Intel Xeon Scalable Processors |
| Power Supply | Redundant Power Supplies |
| Form Factor | 1U Rack |
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