Connecting Pipelines - Huawei NetCol5000-A020 User Manual

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Figure 3-22 Location of needle valves
(1) Liquid pipe needle
valve
Procedure
Step 1 Remove the valve bonnet, and exhaust the nitrogen slowly.
Step 2 Reinstall the valve bonnet until no air exhausts from the needle valve.
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3.7 Connecting Pipelines

Issue 01 (2014-06-30)
You will hear a sound of strong air when exhausting.
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(2) Low-pressure needle
valve
3 Installation Guide
(3) High-pressure needle
valve
40