Emerson Liebert CRV - Figure 140 Differential Pressure Switch Components, 300 Mm (12) DX Models

Emerson Liebert CRV

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Maintenance

167 Liebert

®

CRV

™

Figure 140 Differential pressure switch components, 300mm (12") DX models

Differential

Pressure

Switch

Differential

Pressure

Sampling

Point

Table of Contents

Default Chapter3
- Table of Contents3
- Save These Instructions11
1 Liebert Crv Component Location15
- Liebert Crv Component Location Introduction15
- Figure 1 Component Location, Common Components-600Mm (24") Models15
- Figure 2 Component Location-Liebert 300Mm (12") CR019 DX Units16
- Figure 3 Overall Dimensions, Service Area-600Mm (24") Models17
- Table 1 Dry Weight, All Model Types, ± 517
- Figure 4 Overall Dimensions, Service Area-300Mm (12") DX Models18
- Table 2 Overall Dimensions, Service Area-300Mm (12") Models18
2 Introduction19
- Product Description19
  - Figure 5 Liebert CRV, Front and Rear Views19
  - Smartaisle ™ Configuration20
3 Inspection and Unpacking21
- Equipment Inspection21
  - Packing Material21
- Handling22
- Moving the Unit Using Rigging-600Mm (24") Models24
- Figure 8 Moving the Unit Using Rigging24
- Unpacking the Liebert CRV-600Mm (24") Models25
- Figure 9 Unpacking the Liebert CRV25
- Removing the Unit from the Skid26
- Reattaching the Baffle Panel-600Mm (24") Units27
- Figure 10 Removing the 600Mm (24") Unit from the Skid27
- Uncrating and Removing the Liebert CRV from the Skid-300Mm (12") DX Units28
- Figure 11 Removing the Liebert CRV 300Mm (12") DX Unit from the Skid28
4 Preparing the Liebert Crv for Installation29
- Figure 12 Adjust Leveling Feet-600Mm (24In.) and 300Mm (12In.) Units29
5 Piping30
- Fluid Connections30
- Refrigeration and Hydraulic Circuits31
6 Refrigerant Connections for Air -Cooled Units41
- Piping Guidelines-Air-Cooled Units41
- Figure 21 Connections for Vacuum Creation and Refrigerant Charge-600Mm (24") Models42
- Figure 22 Connections for Vacuum Creation and Refrigerant Charge-300Mm (12") DX Models42
- Figure 23 Top Refrigerant Piping Connections-600Mm (24") Models43
- Figure 24 Bottom Refrigerant Piping Connections-600Mm (24") Models43
- Figure 25 Top Refrigerant Piping Connections-300Mm (12") DX Models43
- Refrigerant Piping-Air-Cooled Models43
- General Piping Layout44
- Liebert Fin/Tube Condenser Selection-600Mm (24") Units44
- Liebert MC Condenser Selection-600Mm (24") and 300Mm (12")CRV Units44
- Vacuum and Refrigerant Charge52
- Calculating Charging Values for Liebert MC Condenser Systems, Units Without Liebert Lee-Temp ™ Systems54
- Table 23 Target Subcooling for Ambient Outdoor Temperature55
- Table 24 Difference in Subcooling Measurements-Indoor Minus Outdoor56
- Table 25 Liquid Pressure and Temperature Chart57
- Charging Fin/Tube Condenser with Variable Fan Speed Control59
7 Water Onnections for60
- Glycol Units -600 MM (24") Models60
- Table 26 Water Connection Options60
- Table 27 Volume of CRV Internal Water Circuits60
- W Ater C Onnections for W Ater /G Lycol U Nits —600 MM (24") M Odels60
- Water Connections-Supply Humidifier and Drain Water61
- Glycol Mixture61
- Figure 29 Water Connection Points, Bottom Entry61
- Table 28 Glycol Mixtures61
- Water Connections: Water/Glycol-Cooled Models62
8 Water Connections for Chilled Water Units -600 MM (24") Units64
- Figure 32 Chilled Water Connections64
- Figure 33 Chilled Water Circuit65
- Figure 34 Connections-Chilled Water Models66
- Table 30 Unit Connections, Chilled Water Models66
9 Electrical67
- Lectrical Onnections67
- Electrical Field Connections Descriptions67
- Electrical Connections74
- Protective Features of the Electronically Commutated Fans-All Models81
- Protective Features of Electrical Heaters-600Mm (24") Models82
- Figure 46 Electrical Heating with Temperature Sensor Protection82
10 Startup83
- Initial Startup83
- Automatic Restart84
- Figure 47 Refrigerant Line Components-600Mm (24") Models84
- Figure 48 Refrigerant Line Components-300Mm (12") DX Models85
- Chilled Water Valve: Chilled Water 600Mm (24") Models86
- Adjust Baffles to Direct Air Properly86
11 Liebert Icom ® Control90
- Figure 53 Liebert Icom ® Default Screen Symbols91
- Table 31 Keyboard Icons and Functions91
- Control Interface92
  - 11.1.1 Navigating through the Liebert Icom Menus92
  - Figure 54 User Menu Icons and Descriptions92
  - Figure 55 Service Menu Icons93
  - Table 32 Service Menu Icons93
  - 11.1.2 Accessing Submenus94
  - Figure 56 System View Screen94
  - Figure 57 Unit View Screen94
  - 11.1.3 Submenus95
  - Figure 58 Main Screens, User, Service and Advanced95
  - Figure 59 Screen Transition96
  - Figure 60 Menu Tree-Stand-Alone Units or Units Not in a Network97
  - 11.1.4 Viewing Multiple Units with a Networked Large Display98
  - Figure 61 Liebert CRV System Screen98
  - Figure 62 Menu Tree-Liebert Crv's in a Network99
- Liebert Icom Display Readout100
- Figure 63 Display User Menu - Display Setup100
- Figure 64 Liebert Icom Menu Components for Liebert CRV101
- Figure 65 Liebert Icom ® Menu Components for Liebert CRV102
- Liebert CRV Operation-Liebert Icom Control103
  - Figure 66 Service Menu - Setpoint Screen103
  - 11.3.1 Entering a Password104
  - 11.3.2 Cooling105
  - Figure 67 Service Menu Setpoint Screen for Cooling105
  - 11.3.3 Fan Speed106
  - 11.3.4 Air Flow106
  - Figure 68 Service Menu Setpoint Screen for Fan Speed106
  - Figure 69 Service Menu Setpoint Screen for Airflow106
  - 11.3.5 Humidification107
  - Figure 70 Service Menu Setpoint Screen for Humidification107
- Liebert Icom User Menu Screens108
- Figure 71 User Menus-Setpoints Parameters Screen108
- Figure 72 User Menus-Spare Parts Screen109
- Figure 73 User Menus-Event Log Screen109
- Figure 74 User Menus-Network Screen110
- Figure 75 User Menus-Sensor Data Parameters Screen110
- Figure 76 User Menus-Sensor Data Parameters Screen111
- Figure 77 User Menus-Display Setup Parameters Screen112
- Figure 78 User Menus-Total Run Hours Parameters Screen113
- Figure 79 User Menus-Condenser Timer Screen113
- Figure 80 User Menus-Condenser Timer Screen114
- Liebert Icom Service Menu Screens115
- Figure 81 Service Menus-Setpoints Parameters Screen115
- Figure 82 Service Menus-Setpoints Parameters Screen116
- Figure 83 Service Menus-Setpoints Parameters Screen117
- Figure 84 Service Menus-Setpoints Parameters Screen118
- Service-Standby Settings Menu Screen119
- Figure 85 Service Menus-Standby Settings / Lead-Lag Parameters Screen119
- Service-Wellness Menu Screens120
  - 11.7.1 Calculating Unit Wellness120
  - Figure 86 Service Menus-Wellness Basic Settings Screen121
  - Figure 87 Service Menus-Wellness Motor Settings Parameters Screen122
  - Figure 88 Service Menus-Wellness Compressor 1 Settings Parameters Screen122
  - Figure 89 Service Menus-Wellness Electric Heater 1 Settings Parameters Screen123
  - Figure 90 Service Menus-Wellness Humidifier Settings Parameters Screen123
- Service-Diagnostics Menu Screens124
- Figure 91 Service Menus-Diagnostics / Service Mode Parameters Screen124
- Figure 92 Service Menus-Diagnostics / Service Mode Parameters Screen124
- Figure 93 Service Menus-Diagnostics / Service Mode Parameters Screen125
- Figure 94 Service Menus-Diagnostics / Service Mode Parameters - Page 4 CW Models126
- Figure 95 Service Menus-Diagnostics / Service Mode Parameters - Page 4 DX Models126
- Figure 96 Service Menus-Diagnostics / Service Mode Parameters Screen127
- Figure 97 Service Menus-Diagnostics / Service Mode Parameters Screen127
- Service-Set Alarms Menu Screens128
- Figure 98 Service Menus Figure 85 Diagnostics / Service Mode Parameters Screen128
- Figure 99 Service Menus-Set Alarms Parameters Screen128
- Figure 100 Service Menus-Set Alarms Parameters Screen129
- Figure 101 Service Menus-Set Alarms Parameters Screen129
- Service-Sensor Calibration Menu Screens130
- Figure 102 Service Menus-Set Alarms Parameters Screen130
- Figure 103 Service Menus-Set Alarms Parameters Screen130
- Figure 104 Service Menusfigure 89 Sensor Calibration / Setup Parameters130
- Figure 105 Service Menus-Sensor Calibration / Setup Parameters131
- Figure 106 Service Menus-Sensor Calibration / Setup Parameters131
- Service-System/Network Unit-Level Setup Menu Screens132
- Figure 107 Service Menus-Sensor Calibration / Setup Parameters132
- Figure 108 Service Menus-System / Network Setup Parameters-System - Page 1 for the Display132
- Figure 109 Service Menus-System / Network Setup Parameters-Large Display Only System133
- Figure 110 Service Menus-System/Network Setup Parameters Unit- Page 1 for the Board134
- Figure 111 Service Menus-System/Network Setup Parameters Unit - Page 2 for the Board135
- Service-Options Setup Menu Screens136
- Figure 112 Service Menus-Options Setup Parameters136
- Figure 113 Service Menus-Options Setup Parameters137
- Figure 114 Service Menus-Options Setup Parameters137
- Figure 115 Service-Service Contact Menu138
- Table 34 Service Contact Info Parameters139
- Service-Remote Sensors Menu Screens140
- Figure 116 Service Menus-Remote Sensor Setup140
12 Operation in Teamwork Mode141
- Unit-To-Unit Network Wiring141
- Liebert Icom U2U Ethernet Network141
- Wiring a Liebert Icom U2U Network142
- Figure 117 U2U Network Setup142
- Figure 118 U2U Network Diagram-600Mm (24In. ) Liebert CRV143
- Teamwork Modes144
13 Remote Rack Sensor Wiring150
- DIP Switch Settings150
- Figure 122 2T Rack Sensor150
- Figure 123 DIP Switches in 2T Sensors150
- Set 2T Rack Sensor Identities-DIP Switch Settings151
- Figure 124 Setting DIP Switches for 2T Sensors151
- Table 36 DIP Switch Settings151
- Terminating the Last 2T Sensor on a Network152
- Canbus and Ethernet Cable Wiring155
- Figure 128 Canbus Wire Cable with Grounding Wire156
- Route the Canbus Wire into the Cooling Unit-600Mm (24")157
- Figure 129 Route the Canbus Wire into the Cooling Unit-600Mm (24")157
- Route the Canbus Wire into the Cooling Unit-300Mm (12")158
- Sensor Location and Mounting159
- Figure 130 Top Entry Route the Canbus Wire into the Cooling Unit-300Mm (12") DX159
- Figure 131 2T Rack Sensors Installed on Neighboring Racks-600Mm (24") Models160
- Figure 132 2T Rack Sensors Installed on Neighboring Racks-300Mm (12") Models161
- Remote Rack Sensor Operation and Rack View Setup162
- Figure 133 Remote Sensor Setup, Page 1 of 1162
14 Operation163
- Figure 134 Temperature and Humidity Sensor Terminal, Viewed from the Rear of the Unit-600Mm163
- Figure 135 Temperature and Humidity Sensor and Filter Clog Sensor Viewed from Front of Unit-300Mm163
- Alarms/Events165
15 Calibration and Regulation after Startup170
- Thermostatic Expansion Valve170
  - 15.1.1 Determine Suction Superheat170
  - 15.1.2 Adjust Superheat Setting with the TEV170
- Environmental Protection170
- Calibrating Electrical Components170
- Table 37 Table170
16 Maintenance171
- Safety Instructions171
- Facility Fluid and Piping Maintenance for Water and Glycol Systems172
- Glycol Solution Maintenance172
- Spare Parts172
- Maintenance Schedule172
- Table 39 Maintenance Schedule173
- Inspect and Replace the Air Filters-600Mm (24") Models174
- Figure 136 Air Filter Location and Input Power Safety Switch-600Mm (24") Models174
- Figure 137 Remove the Air Filters-600Mm (24") Models175
- Figure 138 Differential Pressure Switch Tubes-600Mm (24") Models175
- Inspect and Replace the Air Filters-300Mm (12") Models176
- Figure 139 Remove the Air Filters 300Mm (12") Models176
- Figure 140 Differential Pressure Switch Components, 300Mm (12") DX Models177
- Condensate Drain and Condensate Pump Systems178
  - 16.8.1 Condensate Drain178
  - 16.8.2 Condensate Pump, Dual-Float178
- Air-Cooled Condenser and Drycoolers178
- 16.10 Electrical Heaters178
- Figure 141 Condensate Pump178
- 16.11 Replace a Fan179
  - Fan Replacement on 600Mm (24") Models179
  - Figure 142 Liebert CRV Fan Assembly Components179
- 16.12 Considerations When Dismantling the Unit180
- 16.13 F-Gas Regulation (EC) No. 842/2006180
17 Troubleshooting182
- Table 40 Unit Diagnostics182
- Table 41 Liebert Icom ® Medium Control Board Dipswitch Settings184
Appendix A-Humidifier-600Mm(24") Unitsonly.185
- Principal of Operation185
Appendixa - Humidifier -600 MM (24") Units Only185
Appendixb - Remote Rack Sensor Troubleshooting190
- Figure 146 Canbus and Ethernet Cable Wiring190
Appendix B-Remoteracksensortroubleshooting.191
- Starting Point191

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