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.
Step 5 Remove the plastic plug from the port of the new filter dryer.
Step 6 Install the new filter dryer, as shown in Figure 5-21.
Secure the filter dryer in the original position. Ensure that the arrow on the filter dryer
points upwards.
Installation of the new filter dryer requires the collaboration of two persons. The torque for
tightening the adjustable nut is 70 N•m.
Figure 5-21 Installing a filter dryer
1. Apply red glue to the third to second last thread circles of the outer screw thread
counting from the pipe outlet inward. Secure the filter dryer nut and pipe nut using two
27# adjustable wrenches respectively. Then tighten the adjustable nut using a 36#
adjustable wrench.
2. Reinstall the hold hoops.
Step 7 Perform a leakage test with nitrogen again.
Step 8 After checking that the air conditioner does not leak, vacuumize the air conditioner and
charge refrigerant by referring to 4 Commissioning.
Step 9 Power on the device and tap Startup on the home screen. Ensure that the air conditioner is
running normally without any alarms.
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