Vertiv Liebert CRV - Page 5

10.3 Chilled Water Valve— All Chilled-water Models 114
10.4 Adjust Baffles to Direct Air Properly 116
10.4.1 Adjusting Baffles—600-mm (24-in.) 116
10.4.2 Adjusting Blocker Plate—600-mm (12-in.) 117
10.4.3 Adjusting Baffles—300-mm (12-in.) 118
11 Monitoring and Managing theLiebertCRVwithLiebert®iCOM™ 121
11.1 Automatic restart after power failure 121
11.2 Loss-of-power notification 121
11.3 Variable-speed Fan Control 121
11.3.1 Manual fan-speed control 121
11.3.2 Automatic fan-speed control 122
11.3.3 Minimum Fan Speed 123
11.4 Compressor Protection 123
11.4.1 Advanced DX Freeze Protection 123
11.4.2 Advanced DX High-pressure Protection 123
11.4.3 High-pressure Lock-off 123
11.4.4 High-temperature Lock-off for Digital-scroll compressors 124
11.4.5 Short-cycle Protection 125
11.4.6 Motorized Ball Valves forWater/Glycol-cooledUnitswithDigital-scroll Compressors 125
12 Troubleshooting 127
13 Maintenance 133
13.1 Safety Instructions 133
13.2 Facility Fluid and Piping Maintenance forWaterandGlycolSystems 134
13.3 Glycol Solution Maintenance 134
13.4 Spare Parts 134
13.5 Maintenance Schedule 134
13.5.1 Thermostatic Expansion Valve (TXV) Maintenance 136
13.5.2 Determining Suction Superheat 136
13.5.3 Adjusting Superheat Setting with the TXV 136
13.6 Inspect and Replace the Air Filters—600-mm (24-in.) Models 137
13.7 Inspect and Replace the Air Filters—300-mm (12-in.) Models 139
13.8 Condensate-drain and Condensate-pump System Maintenance 140
13.8.1 Condensate Drain 140
13.8.2 Condensate Pump, Dual-Float 140
13.9 Air-Cooled Condenser and Drycooler Maintenance 141
13.10 Electric Reheat Maintenance 141
13.11 Fan Replacement 141
13.11.1 Replacing a Fan in 600-mm (24-in.) Models 141
13.11.2 Replacing a Fan in 300-mm (12-in.) Models 142
13.12 Considerations when Dismantling the Unit 144
13.13 F-Gas Regulation (EC) No. 842/2006 144
14 Preventive Maintenance Worksheet 147
Vertiv | Liebert CRV Installer/User Guide | 5