Connecting Pipelines; Exhausting Nitrogen - Huawei NetCol8000-A Series User Manual

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Figure 3-30 Removing the tooling body of the indoor fan
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3.5 Connecting Pipelines

3.5.1 Exhausting Nitrogen

Prerequisites
Before exhausting nitrogen, check whether the cooling system has good air tightness.
(Remove the bonnet from the needle valve and press the valve plug to check whether there is
a sound of air flow.)
Context
Before connecting refrigerant pipes, exhaust nitrogen used for avoiding explosion and injury.
Issue 10 (2019-01-15) Copyright © Huawei Technologies Co., Ltd.
3 Installation Guide
47