FusionModule800 Smart Small Data Center
Installation Guide (Six Fans)
Copyright © Huawei Technologies Co., Ltd.
Figure 3-50 Stop valve
Procedure
Step 1 Open the stop valves on the gas pipe and liquid pipe of the indoor unit in turn using a 5 mm
hex key.
Figure 3-51 Open a stop valve plug
Step 2 Remove the needle valve bonnets at the gas pipe and liquid pipe of the indoor unit, connect
leather hoses and pressure gauges to the needle valves on the gas pipe and liquid pipe, and
gently exhaust nitrogen, as shown in Figure 3-52.
When connecting the leather hose, the pressure gauge valve should be closed. When
exhausting nitrogen, ensure that the leather hose is secured. Otherwise, personal injury will be
caused as a result of the air current impact.
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