● After the outdoor unit stop valve is opened, the refrigerant in the outdoor unit
ows to the engineering pipe and indoor unit pipe. When performing other
operations, be careful to prevent refrigerant from spraying out.
● After the vacuumization and before removing the rubber hose, ensure that
there is positive pressure inside the refrigerant pipe of the indoor unit.
Step 7 Remove the hose, pressure gauge, and vacuum pump.
Step 8 Install needle valve nut and rear cover nut of indoor unit and outdoor unit.
Step 9 Wrap the gas pipe stop valve, liquid stop valve and the pipes connected to the
stop valve with stop valve sponge (the thickness is 5 mm).
----End
4.2.7 Installing Power Supply and Distribution Devices
4.2.7.1 Installing Lithium Batteries
Procedure
Step 1 Install and check according to the installation guide. If there are no
oating nuts
on both sides of the rack, install the
oating nuts delivered with the cabinet.
Step 2 Push an ESM into the cabinet and fasten the ESM.
Figure 4-78 Installing an ESM
FusionModule800 Smart Small Data Center
User Manual 4 Installation Guide
Issue 01 (2021-02-05) Copyright © Huawei Technologies Co., Ltd. 157
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