NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-17 Connecting cables to the electric heating belt and the compressor
Step 11 Vacuumize the system and precharge refrigerant, as shown in 4.1 Vacuumizing and
Precharging Refrigerant.
Step 12 Check that the phase sequences are correct before starting the system. Then choose Maint >
Diagnostic Mode > Enter to check the system pressure and temperature and ensure the
refrigerant is charged with an optimal system status (see 4.7 Charging the Remaining
Refrigerant). Ensure that the system is running normally without alarms.
Step 13 Install the air filter and close the rear door.
Step 14 Power on the device. On the LCD home screen, choose Maint > Performance Maint, and
clear the compressor runtime.
Figure 5-18 Performance maintenance
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