Vertiv XDU1350 Operation And Maintenance Manual
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Vertiv XDU1350 Operation And Maintenance Manual

Coolant distribution unit
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XDU1350 Coolant Distribution
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Operation and Maintenance Manual
XDU1350B

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Summary of Contents for Vertiv XDU1350

  • Page 1 XDU1350 Coolant Distribution Unit Operation and Maintenance Manual XDU1350B...
  • Page 2 Vertiv recommends installing a monitored fluid detection system that is wired to activate the automatic closure of field-installed coolant fluid supply and return shut off valves, where applicable, to reduce the amount of coolant fluid leakage and consequential equipment and building damage.

  • Page 3: Table Of Contents

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual TABLE OF CONTENTS 1 Important Safety Instructions 1.1 General 1.2 Installation/Handling 1.3 Application 1.4 Warranty 1.5 Electrical Connection 1.6 Replacement Parts 1.7 Waste Disposal 1.8 Documentation 2 Agency 2.1 Product Standards and Approvals 2.2 ROHS 3 Compliance...
  • Page 4 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.7 Temperature Sensor Graph 4.8 Manual Operation of Cooling Valve 4.9 Group Control 4.9.1 Group Control—Network Cabling 4.9.2 Group Control—Network Termination Resistors 4.9.3 Group Control—Network Addresses 4.9.4 Group Control—Start Sequence from Power Up 4.9.5 Group Control—Controls...

  • Page 5: Important Safety Instructions

    1 Important Safety Instructions Save These Instructions This manual contains important instructions that should be followed during operation and maintenance of the Vertiv™ XDU1350. WARNING! Arc flash and electric shock hazard. Can cause serious injury or death. Building and equipment damage may also result.
  • Page 6 Shipping weights and unit weights are specified in the Vertiv™ XDU1350 Application and Planning Guide SL- 71309. Use the center of gravity indicators on the unit to determine the position of the slings.
  • Page 7 Vertiv recommends installing a monitored fluid detection system that is wired to activate the automatic closure of field installed coolant fluid supply and return shut off valves to reduce the amount of coolant fluid leakage and consequential equipment and building damage.

  • Page 8: General

    Water leakage can result in severe property damage and loss of critical data center equipment. Do not locate unit directly above any equipment that could sustain water damage. Vertiv recommends installing monitored leak detection equipment for the unit and supply and return lines. NOTICE Risk of a catastrophic water circuit rupture.

  • Page 9: Installation/Handling

    Unit weights are specified in the Vertiv™ XDU1350 Application and Planning Guide SL- 71309.

  • Page 10: Application

    This product is to be used indoors only and must only be used for the application it was designed for. This product must not be used in a hazardous environment. 1.4 Warranty Failure to comply with the Vertiv installation, maintenance, and operation instructions may affect the reliability and performance of the unit and invalidate any warranty. 1.5 Electrical Connection WARNING! Arc flash and electric shock hazard.

  • Page 11: Replacement Parts

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual NOTICE Risk of improper power supply connection. Can cause equipment damage and loss of warranty coverage. Prior to connecting any equipment to a main or alternate power source (for example backup generator systems) for startup, commissioning, testing, or normal operation, ensure that these sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be connected.
  • Page 12 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp. 1 Important Safety Instructions...

  • Page 13: Agency

    This product is cULus listed for the appropriate voltage models and certificates will be made available on request (cULus certificate pending). 2.2 ROHS 3 Compliance Vertiv certifies that all products manufactured and supplied by Vertiv are fully RoHS compliant in accordance with EU RoHS Directives EU 2015/863. 2 Agency...
  • Page 14 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp. 2 Agency...

  • Page 15: Product Description

    This document describes the operation, alarm management, and maintenance of the Vertiv™ XDU1350. The XDU1350 contains a secondary closed loop circuit that provides a supply of cooling fluid to IT equipment, either through indirect cooling (such as rack mounted rear door heat exchangers), or direct cooling (such as cold plates at chip level).
  • Page 16 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 3.2 XDU1350 Standard Model Number Definitions (continued) Digit Feature Value Description None Communication Protocol: Modbus, BACnet, SNMP V2 / V3, HTTP(s) Webserver, NTP, SSH- CLI, SFTP Display 7 in. Touchscreen Display...

  • Page 17: Product Views

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 3.3 Product Views Vertiv™ XDU1350 bottom connection primary and secondary tails, flexible makeup bag and no secondary fluid monitoring. See Figure 3.1 below. Figure 3.1 Front View of XDU1350 (without panels) with Top Secondary Connection, Bottom Primary Connection and...
  • Page 18 Controller touch screen (mounted to front door) Room temperature and RH sensor Vertiv™ XDU1350 bottom connection primary and secondary tails, flexible makeup bag and no secondary fluid monitoring. See Figure 3.2 below. Figure 3.2 Rear View of XDU1350 (without panels) with Top Secondary Connection, Bottom Primary Connection and...
  • Page 19 Auto air vent (fitted to each filter housing and pump inlet manifold) Vertiv™ XDU1350 top connection primary and secondary tails, and secondary fluid monitoring. See Figure 3.3 below. Figure 3.3 XDU1350 (without panels) with Top Secondary and Primary Connection, Stainless Steel Reservoir,...
  • Page 20 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Items Description Secondary flowmeter Pressure relief valve Primary flowmeter Reservoir tank Level sensor Reservoir fill pump P5 Filling wand Pressure sensor Drain valve Secondary fluid monitoring system (optional) Side forklift access...

  • Page 21: Operation

    4.1 Controller Overview The Vertiv™ XDU1350 controller is designed to monitor and control the supply of cooling fluid to IT equipment in unattended data center environments. Secondary circuit cooling water is closely controlled to a defined temperature and at a controlled flow rate (or differential pressure), for optimum heat management.

  • Page 22: Main Menu Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.2 Main Menu Screen The Main Menu screen displays further accessible submenus for an increased level of information and alteration of certain parameters. NOTE: Some control system menus may not be visible if the user has not logged in and visibility will also depend on the login access level used.

  • Page 23: Status Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.3 Status Screen The Status screen displays comprehensive view only information on the operating condition of the Vertiv™ XDU1350. NOTE: If the unit has not been configured for certain options, then corresponding values will not be shown. For example, if the secondary filters are not fitted, then PS5 a, b, c will show -101.
  • Page 24 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.1 Status - Page 1 (continued) Parameter Value _ _ °C _ _ °C Secondary Return Temperature T4 _ _ °C Table 4.2 Status - Page 2 Parameter Value Primary Supply Temperature T1 _ _ °C...
  • Page 25 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.4 Status - Page 4 Parameter Value Pump 1 Hours Run _ _ hrs Pump 2 Hours Run _ _ hrs Pump 3 Hours Run _ _ hrs Valve 1 Runtime 0 to 25%...
  • Page 26 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.5 Status - Page 5 (continued) Parameter Value Pump 3 Heat Sink Temperature _ _ °C Pump 1 Last Fault Code Pump 2 Last Fault Code Pump 3 Last Fault Code Table 4.6 Status - Page 6...

  • Page 27: Data Curves Screen (Real Time Update)

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.4 Data Curves Screen (Real Time Update) The Data Curves screen displays a graphical representation of two pieces of variable data. A red trace for Cooling (control valve) Demand and a yellow trace for Secondary Supply Temperature T2, both of which will update in real time (time span of display is 3 minutes).

  • Page 28: Alarm Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.5 Alarm Screen The Alarm screen can be used to view new or active Alarms and to acknowledge these events. Refer to Troubleshooting (Alarms) on page 53 for a full list of alarms and further information.

  • Page 29: Login Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.6 Login Screen The Login screen allows the user access to further information and to adjust various parameters and settings when logged in at the service or engineer level. • No access code (User Level 1) provides access to Login, Status, Data Curves and Alarm pages.

  • Page 30: Setup Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.7 Setup Screen NOTE: This menu screen is only visible once logged in. The Setup screen will not normally require access. Items within this screen are either set at the factory, or during commissioning.
  • Page 31 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.8 Setup - Date and Time Title Description Default Range Unit Date Adjust date dd/mm/yyyy dd/mm/yyyy P021 Date Format Select preferred format dd/mm/yyyy mm/dd/yyyy yyyy/mm/dd Time Adjust time (24 hour clock)
  • Page 32 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.11 Setup - IP Connectivity (Interface A) Submenu Title Description Default Range Unit P050 MAC Address View MAC address _ _._ _._ _._ _._ _._ _ Read-only P051 DHCP Select as required...
  • Page 33 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.15 Setup - BACnet Title Description Default Range Unit Set required protocol type (and physical Disabled, IP – Port A, P074 Protocol Disabled communication port) IP – Port B, MSTP...

  • Page 34: Configuration Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.8 Configuration Screen NOTE: This screen is only available once logged in. The Configuration screen can be used to set specific parameters and control functions. Figure 4.8 Control System Configuration Screen NOTE: Parameter IDs shown in red text will only be accessible with the engineer login code.
  • Page 35 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.18 Configuration - Pump Control Title Description Default Range Unit P201 Control Type Pump speed flow or differential pressure (DP) controlled Flow or DP P202 Flow Setpoint Set the required secondary flow rate...
  • Page 36 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.19 Configuration - Temperature Control (continued) Title Description Default Range Unit Sec. Temp Reset P306 Low/high temp. alarm reset point 0.5 to 5.0 °C Hysteresis P307* PID – Control Period...
  • Page 37 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.22 Configuration - Leak Detection Title Description Default Range Unit Leak Detection - Flood Alarm or P601 Alarm only, or shutdown and alarm Alarm Tray Alarm+S/D Leak Detection - Alarm or...
  • Page 38 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.24 Configuration – Sensors (continued) Title Description Default Range Unit Set measurement range. 0 = 0 to 30 bar, 1 = 0 to 15 bar, 2 = -1 P813 PS3/PS4 Scaling...

  • Page 39: Service Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.9 Service Screen NOTE: This screen is only available once logged in. The Service screen (accessible only with service and engineer logon codes) can be used to set some parameters and to assist in commissioning.
  • Page 40 Full Manual Control allows the user to manually control all functions of the unit for a limited time period. Selection causes the unit to shut down and all outputs will be inactive unless manually set and all alarms will be ignored. See Vertiv™ XDU1350 Installation and Commissioning Guide SL-71308 for more information.
  • Page 41 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.32 Service - Full Manual Control for Stainless Steel Reservoir Title Description Default Range Unit S301 Full Manual Control Allows full manual control of all functions Enabled Disabled, Enabled S302...

  • Page 42: Diagnostics Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.10 Diagnostics Screen NOTE: This screen is only available after you are logged in. This screen gives raw information and analog to digital conversion factors for the status for all Universal Inputs, Resistive Inputs, Digital Inputs, Digital Outputs, and Analogue Outputs.
  • Page 43 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.36 I/O Diagnostics – Digital and Analogue Outputs Description State DO01 Unit Fill Pump P4 DO02 Control Valve 1 & 2 Feedback Select DO03 PS3/PS4 Select DO04 PS5b/PS5c Select DO05...

  • Page 44: Calibration Screen

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.2.11 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 instructions. NOTE: This screen is only available after you have logged in.

  • Page 45: Primary Circuit Operation

    The primary water temperature is monitored at the inlet to the Vertiv™ XDU1350 cabinet. The cooling performance of the XDU1350 has been calculated for a primary temperature range from 6 °C to 45 °C (43 °F to 113 °F) (ASHRAE W3). Refer to Vertiv™...

  • Page 46: Secondary Circuit Operation

    A21 - Insufficient Water Level alarm will be generated. This is a latched alarm and it will not be possible to restart the unit until the event has been manually cleared. The system pressure at the Vertiv™ XDU1350 inlet (PS1) is continuously monitored (see Table 4.3 on page 20) to ensure that the system is always pressurized.
  • Page 47 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.12 Fill Pressure and Level Flow Chart (At Initial Start) Flexible Makeup Container 4 Operation Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 48 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.13 Fill Pressure and Level Flow Chart with Stainless Steel Reservoir Tank Proprietary and Confidential ©2024 Vertiv Group Corp. 4 Operation...
  • Page 49 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.14 Fill Pressure and Level Flow Chart (When Running) Flexible Makeup Container 4 Operation Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 50 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.15 Fill Pressure and Level Flow Chart with Stainless Steel Reservoir Tank Proprietary and Confidential ©2024 Vertiv Group Corp. 4 Operation...
  • Page 51 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.16 Water Level Management Flow Chart (When Running) Flexible Makeup Container Figure 4.17 Fluid Level Management Flow Chart (When Running) with Reservoir Tank 4 Operation Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 52 DP control monitors the secondary differential pressure with sensors on the supply and return connections of the Vertiv™ XDU1350. On startup, the control loop increases the pump speed in stages until the DP matches the DP setpoint. If over pressure protection is enabled then the flow automatically restricted to reduce any buildup in secondary pressure.

  • Page 53: Temperature Control Loop Adjustment

    If the differential pressure exceeds 0.3 bar (4.5 psi) for filter 3, then an A49 – secondary filter 3 Dirty alarm is generated. Secondary flow rate is monitored with a calorimetric flow meter at the secondary inlet to the XDU1350. The flow can be read on the Home screen or on page 3 of the Status screen.

  • Page 54: Pi Control

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.4.1 PI Control For systems that have reasonably steady or slowly changing heat loads, PI control only should be sufficient. Set the Proportional Band to 2.2 x the Proportional Band setting at which the system became unstable.
  • Page 55 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.19 Control Screen Active Alarms The alarm descriptions may be accessed by selecting the vertical columns where the alarms appear (as shown in Figure 4.20 on the next page). 4 Operation...
  • Page 56 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.20 Control Screen Alarm Identification Some alarms will self clear if the condition is a brief one. Examples are when a tempeature goes over alarm threshold and then comes back to a healthy condition and when the fault has been rectified, such as when a faulty sensor has been replace.

  • Page 57: Troubleshooting (Alarms)

    NOTE: This is the full list of all alarms, however not all will necessarily be active depending on unit configuration, for example if the Vertiv™ XDU1350 has not been fitted and configured for a primary filter, then the associated A29 –...
  • Page 58 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay T3 Room ✓ Temperature Sensor Fault Detail: Reading from the room temperature sensor T3 is outside the normal range of 5 °C to 70 °C (41 °F to 158 °F), or disconnected.
  • Page 59 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay PS2a Secondary ✓ Pressure Sensor Fault Detail: Reading from the secondary supply pressure sensor PS2a is outside the normal range of -1 to 8 bar (-15 to 116 psi) and min/ max values only will be displayed.
  • Page 60 (default), after first attempting a fault reset. Pump 1 will then run. Action: Take a note any fault code on the inverter display and contact Vertiv for more information/corrective action. Pump P2 Inverter ✓...
  • Page 61 (default 5 min. delay applies). Action: Check operation of cooling valve. Check primary fluid supply flow rate. Ensure system heat load does not exceed the XDU1350 capacity (i.e. check that primary flow is sufficient for heat load – refer to Vertiv™ XDU1350 Application and Planning Guide SL-71309.
  • Page 62 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay Secondary Fluid Low ✓ ✓ Temperature Detail: Secondary fluid temperature has dropped by more than 2 °C (4 °F) below set point (default). Alarm will cancel when temperature rises to 1 °C (2 °F) below set point or higher.
  • Page 63 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay System Low ✓ ✓ Pressure Detail: Pressure at PS1 has dropped more than 0.2 bar (3 psi) (set, non-adjustable) below fill pump activation threshold for more than 1 minute (set, non-adjustable, applicable when unit is running in automatic/online mode).
  • Page 64 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay Secondary Filter 2 ✓ Dirty A49* Detail: Differential pressure across secondary filter 2 (if fitted) is greater than 0.2 bar (3 psi), indicating that the filter should be cleaned (default 60 second delay applies).
  • Page 65 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Table 4.37 Alarms List (continued) Code Description Type Self-clear Latching Shutdown Delay Auxiliary IO Module ✓ Communications Fault A57* Detail: Controller unable to communicate with auxiliary IO module. Action: Check wiring and terminations.

  • Page 66: Temperature Sensor Graph

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 4.7 Temperature Sensor Graph Figure 4.21 Temperature Sensor Resistance This chart may be used to check the validity of the 10 K thermistor temperature sensors used in the unit. 4.8 Manual Operation of Cooling Valve WARNING! Risk of electric shock.

  • Page 67: Group Control

    Less cooling More cooling Press the internal gear release button down and move the valve handle to the desired position. This will allow the Vertiv™ XDU1350 unit to continue running and providing cooling until the valve actuator can be replaced.

  • Page 68: Group Control-Network Cabling

    2 signal wires (CAN Hand CAN L) and a 1 signal return path (GND). The XDU1350 provides 2 CAN H, 2 CAN L and 2 GND terminals on sockets SK9, 1, 2 and 3 for In and terminals 4, 5 and 6 for Out.

  • Page 69: Group Control-Network Termination Resistors

    4.9.2 Group Control—Network Termination Resistors The XDU1350 controller includes an onboard 120 ohm resistor which can be activated by fitting a hardware jumper. If only one XDU1350 unit is installed, the resistor does not require activation. For a 2x unit installation, both units should have the termination resistors enabled.
  • Page 70 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 4.26 CANbus Network Termination Resistors Wiring Item Description Units with termination enabled Units with termination disabled Figure 4.27 CANbus Network Termination Resistors Item Description Jumper fitted. Termination resistor activated. Jumper not fitted. Termination resistor not activated.

  • Page 71: Group Control-Network Addresses

    XDU135Os in the group in Seh1p/Group Control/P094 regardless if they are running. All XDU1350 units work in parallel and set their pump speeds to be identical with that of the lead XDU1350.

  • Page 72: Group Control-Failover Offset

    4.9.7 Group Control—Failover Offset Failure mode enables standby XDU pumps to start in 75 ms and a 2 seconds ramp up when a XDU1350 in the group is taken offline. This is to seamlessly maintain system differential pressure if a unit is lost without over/undershoots.
  • Page 73 Figure 4.29 Lead Communication Failure In the event of a sensor failure, all sensors related to control (PS1, PS2 and T2) are redundant at the Vertiv™ XDU1350 level, so a single sensor failure will not impact the operation or the status of the XDU1350. So, if the lead XDU1350 does have a sensor failure it will not result in a change of lead.
  • Page 74 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp. 4 Operation...

  • Page 75: Maintenance

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual 5 Maintenance 5.1 General WARNING! Arc flash and electric shock hazard. Can cause serious injury or death. Building and equipment damage may also result. Disconnect all local and remote electric power supplies and wear appropriate, OSHA approved personal protective equipment (PPE) per NFPA 70E before working within the electric control enclosure.

  • Page 76: Fluid Specifications

    OSHA-approved PPE should attempt to remove or install cabinet panels. The Vertiv™ XDU1350 should be cleaned on a regular basis and checked for leaks and malfunctions. Maintenance should only be carried out by personnel qualified to work on this type of equipment. For information on Maintenance or Service Support, contact Vertiv.
  • Page 77 Primary Circuit The Vertiv™ XDU1350 is designed for use with a facility supply of plain water or up to 20% glycol/water. A 20% glycol concentration will give protection to approximately -9 °C (16 °F). If a higher concentration of glycol is used, then the cooling capacity of the unit may have to be de-rated (contact manufacturer for advice).

  • Page 78: Planned Preventative Maintenance

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Secondary Circuit The secondary circuit should be filled with particulate free deionized water or glycol treated with suitable corrosion inhibitors and biocides. Failure to use adequate water treatment may result in decreased system performance and reliability due to corrosion, scaling, fouling, and microbiological growth which may invalidate the warranty.
  • Page 79 Planned maintenance service every 6 months (in addition to 3 month maintenance) • Simulate the pump change over. • Simulate the Vertiv™ XDU1350 switch off, using backup XDU1350 or parallel operation to meet the performance requirement. • Check the leakage detection.

  • Page 80: Secondary Filter Service (If Fitted)

    5.4 Secondary Filter Service (if fitted) Providing the electrical panel transit screws were removed during installation (see the Vertiv™ XDU1350 Installation and Commissioning Guide SL-71308 , the electrical panel can be easily hinged upwards to a horizontal position to give unimpeded access to the secondary filters.
  • Page 81 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 5.2 Servicing Secondary Filter Item Description Withdraw filter from housing Filter clamp ring Connect hose to drain valve Filter isolation valve Filter isolation valve NOTE: Each filter can be cleaned while the unit is running provided the operation is switched to the pumps/filters not to be cleaned.

  • Page 82: Unit Draining

    5.5 Unit Draining Drain valves are provided throughout the Vertiv™ XDU1350 to permit the removal of system fluid for filter change and other service work. Field supplied external isolation valves should be fitted by the installer to both supply and return pipes, as close as possible to the XDU1350 for maintenance purposes.
  • Page 83 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure 5.5 Secondary Drain Valve Locations Description Item Pump base Pump discharge Supply tail pipe (top or bottom exit) Return tail pipe (top or bottom exit) 5 Maintenance Proprietary and Confidential ©2024 Vertiv Group Corp.

  • Page 84: Spare Parts

    5.6 Spare Parts It is recommended that the end user holds a kit of essential spare parts to enable the Vertiv™ XDU1350 to be kept running with the minimum of down time. Any parts replaced during maintenance or servicing must be the same specification as those being replaced and should only be obtained from Vertiv.

  • Page 85: Appendices

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Appendices Appendix A: Technical Support and Contacts A.1 Technical Support/Service in the United States Vertiv Group Corporation 24x7 dispatch of technicians for all products. 1-800-543-2378 Liebert® Thermal Management Products 1-800-543-2778 Liebert® Channel Products 1-800-222-5877 Liebert®...
  • Page 86 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp. Appendices...

  • Page 87: Appendix B: Pipe Schematic Vertiv™ Xdu1350

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Appendix B: Pipe Schematic Vertiv™ XDU1350 Figure B.1 Pipe Schematic with Flexible Makeup Container Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 88 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Figure B.2 Pipe Schematic with Stainless Steel Reservoir Tank Proprietary and Confidential ©2024 Vertiv Group Corp.

  • Page 89: Appendix C: Warranty Details

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Appendix C: Warranty Details C.1 Limited Product and Service Warranty Extended warranties, service, and maintenance programs are available in most locations, details available upon request. To obtain further details of limited warranty, also after sales service offerings, contact your local sales representative or technical support if you have any questions or problems during unit installation.
  • Page 90 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp.

  • Page 91: Appendix D: Notes

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Appendix D: Notes Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 92 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp.

  • Page 93: Appendix E: Disposal Information

    Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual Appendix E: Disposal Information NOTE: Waste materials must be disposed of in a responsible manner in line with environmental regulations. The de-commissioning and disposal of this product should be undertaken by qualified personnel in adherence to local and national safety regulations, particularly for protection of lungs, eyes, and skin from chemicals, dust, etc.
  • Page 94 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual This page intentionally left blank Proprietary and Confidential ©2024 Vertiv Group Corp.
  • Page 95 Vertiv™ XDU1350 Coolant Distribution Unit Operation and Maintenance Manual...
  • Page 96 Vertiv.com | Vertiv Headquarters, 505 N Cleveland Ave, Westerville, OH 43082, USA © 2024 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered trademarks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness here, Vertiv Group Corp.

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