Vertiv CoolChip CDU 600 - Page 4

4.6 Troubleshooting Alarms 51
5 CANbus Communication Troubleshooting 59
5.1 Temperature Sensor Graph 59
5.2 Manual Operation of Cooling Valve 60
5.3 Group Control 61
5.3.1 Group Control—Network Cabling 61
5.3.2 Group Control—Network Termination Resistors 62
5.3.3 Group Control—Network Addresses 63
5.3.4 Group Control—Start Sequence from Power Up 64
5.3.5 Group Control—Controls 64
5.3.6 Group Control—Unit Rotation and Standby Units 64
5.3.7 Group Control—Failover Offset 64
5.3.8 Group Control—Failure Modes 65
6 Maintenance 67
6.1 Fluid Specifications 67
6.2 Planned Preventative Maintenance 68
6.2.1 Special Tools and Equipment 68
6.2.2 Visual Checks for Damage and Leakage 68
6.2.3 General Settings 69
6.2.4 Controller Checks 69
6.2.5 Sensor Checks 69
6.2.6 Fluid Checks 70
6.2.7 Functional Checks 70
6.3 Primary Filter Service (if Fitted) 70
7 Secondary Filter Service (if Fitted) 73
7.1 Unit Draining 74
Appendices 77
Appendix A: Technical Support and Contacts 77
Appendix B: Piping Schematic 79
Appendix C: Notes 81
Appendix D: Disposal Procedure 83
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Vertiv™ CoolChip CDU 600 Operation and Maintenance Guide