NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Contents
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
v
3.8.2 Connecting Power Cables ........................................................................................................................................ 46
3.8.3 Installing the Voltage Jumper ................................................................................................................................... 47
3.8.4 Connecting the Signal Cables .................................................................................................................................. 48
3.8.4.1 Preparations Before Connection ........................................................................................................................... 48
3.8.4.2 Connecting Outdoor Unit On/Off Signal Cable .................................................................................................... 51
3.8.4.3 Connecting a Water Sensor ................................................................................................................................... 52
3.8.5 Teamwork Networking and Monitoring................................................................................................................... 52
3.8.6 Installing T/H Sensors ............................................................................................................................................. 55
3.9 Connections Verification ............................................................................................................................................. 57
4 Power-On Commissioning ........................................................................................................ 60
4.1 Tools ........................................................................................................................................................................... 60
4.2 Partially Charging in Refrigerant ................................................................................................................................ 60
4.2.1 Calculation Requirements of Chilled Oil and Refrigerant to Be Charged ............................................................... 60
4.2.2 Charging Refrigerant Oil ......................................................................................................................................... 61
4.2.3 Vacuumizing ............................................................................................................................................................ 63
4.2.4 Partially Charging in Refrigerant ............................................................................................................................. 64
4.3 Power-on Preparations ................................................................................................................................................ 65
4.4 Powering on the Equipment ........................................................................................................................................ 67
4.5 Commissioning Procedure .......................................................................................................................................... 68
4.6 Powering off the Equipment ....................................................................................................................................... 71
5 System Operation and Maintenance ....................................................................................... 72
5.1 Safety Precautions ...................................................................................................................................................... 72
5.2 Indoor Unit Maintenance Items .................................................................................................................................. 72
5.3 Other Cooling System Components............................................................................................................................ 76
5.4 Alarm Reference ......................................................................................................................................................... 78
5.5 Troubleshooting .......................................................................................................................................................... 90
5.5.1 The NetCol5000-A020 Generates Abnormal Voice ................................................................................................. 90
5.5.2 A Compressor does not Work ................................................................................................................................... 91
5.5.3 Compressor Generates Excessive Noises ................................................................................................................ 92
5.5.4 An Indoor Fan Fails to Start ..................................................................................................................................... 93
5.5.5 Humidification Fails ................................................................................................................................................ 95
5.5.6 The Heating Function Is Unavailable ...................................................................................................................... 96
5.5.7 The Water Overflows the NetCol5000-A020 ........................................................................................................... 98
5.5.8 The T/H Sensor Cannot Detect the Humidity and Temperature .............................................................................. 98
5.5.9 The LCD does not Light .......................................................................................................................................... 99
5.6 Parts Replacement .................................................................................................................................................... 100
5.6.1 Replacing Air Filters .............................................................................................................................................. 100
5.6.2 Replacing an Indoor Fan ........................................................................................................................................ 102
5.6.3 Replacing the Compressor ..................................................................................................................................... 103
5.6.4 Replacing the Humidifier Cylinder ........................................................................................................................ 107
5.6.5 Electric Heater ....................................................................................................................................................... 109
